YAMAHA FT50G (01) PDF MANUAL

Before mounting or operating, read the entire manual.

Read all owner’s/operator’s manuals and labels for the boat and motor.

Do not overpower the boat. Use a motor within the boat’s rated horsepower capacity.

Do not modify the outboard motor.

Never operate under the influence of alcohol or drugs.

Have an approved personal flotation device (PFD) for every occupant. Children and non-swimmers should always wear PFDs. Everyone should wear PFDs in potentially hazardous conditions.

Gasoline is highly flammable. Handle and store carefully. Ensure no gas fumes or leaks before starting.

This product emits carbon monoxide. Keep cockpit and cabin areas well ventilated. Avoid blocking exhaust outlets.

Check throttle, shift, and steering before starting.

Attach the engine stop switch lanyard securely to yourself.

Know and obey marine laws and regulations.

Stay informed about the weather and avoid hazardous conditions.

Tell someone your boating plans (Float Plan).

Use common sense, know your abilities and your boat’s handling. Operate at safe speeds and watch for obstacles and traffic.

Always watch carefully for swimmers.

Stay away from swimming areas.

When a swimmer is nearby, shift to neutral and shut off the engine.

Be sure shift control is in neutral before starting (except 2HP).

Do not touch or remove electrical parts when starting or during operation.

Keep hands, hair, and clothes away from flywheel and other rotating parts while the engine is running.

GASOLINE AND ITS VAPORS ARE HIGHLY FLAMMABLE AND EXPLOSIVE!

Do not smoke and keep away from sparks, flames, or ignition sources.

Stop the engine before refueling.

Refuel in a well-ventilated area. Refuel portable tanks off the boat.

Avoid spilling gasoline. Wipe up spills immediately with dry rags.

Do not overfill the fuel tank.

Tighten the filler cap securely.

Touch the fuel nozzle to the filler opening or funnel to prevent electrostatic sparks.

Use only new, clean gasoline stored in clean containers, free from water or foreign matter.

If you swallow gasoline, inhale a lot of vapor, or get gasoline in your eyes, seek immediate medical attention.

If gasoline spills on your skin, wash immediately with soap and water. Change clothing if gasoline spills on it.

Recommended engine oil: 4-stroke motor oil with API classifications SE, SF, SG, SH, or SJ. The SAE viscosity should correspond to the ambient temperature as shown in the chart:

Engine oil quantity (excluding oil filter): 2.5 L (2.64 US qt) (2.20 Imp.qt)

CAUTION: All 4-stroke engines are shipped from the factory without engine oil.

Minimum cold cranking amps (CCA/EN): 430.0 A

Minimum rated capacity (20HR/IEC): 70.0 Ah

NOTE: The engine cannot be started if battery voltage is too low.

1. Propeller diameter in inches.

2. Propeller pitch in inches.

3. Type of propeller (propeller mark/letter code).

Attach the lanyard securely to your clothing, arm, or leg while operating.

Do not attach the lanyard to clothing that could tear loose.

Do not route the lanyard where it could become entangled, preventing it from functioning.

Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means loss of most steering control, and the boat could slow rapidly, potentially throwing people and objects forward.

“OFF”: Electrical circuits are off, key can be removed.

“ON”: Electrical circuits are on, key cannot be removed.

“START”: Starter motor turns to start the engine. Key returns automatically to “ON” when released.

If the boat tends to veer left (port side), turn the rear end of the trim tab towards the port side (Position “A” in the manual’s figure).

If the boat tends to veer right (starboard side), turn the rear end of the trim tab towards the starboard side (Position “B” in the manual’s figure).

Trim meter display

Hour meter (total and trip)

Low oil pressure warning indicator

Overheat warning indicator

Set and Mode buttons for operation

Pressing the “mode” button cycles the display: Total hours -> Trip hours -> Display off.

To reset the trip hours, display the trip hours, then press the “set” and “mode” buttons simultaneously for more than 1 second.

NOTE: The total number of hours cannot be reset.

Press the “mode” button repeatedly until the indicator points to “TRIP”.

To reset the trip meter to zero, press the “set” and “mode” buttons simultaneously.

NOTE: The unit (km or miles) depends on the speedometer setting. Trip distance is kept in memory by battery power; data is lost if the battery is disconnected.

Press the “mode” button repeatedly until the indicator on the digital speedometer face points to “TIME”.

Press the “set” button; the hour display will blink.

Press the “mode” button until the desired hour is displayed.

Press the “set” button again; the minute display will blink.

Press the “mode” button until the desired minute is displayed.

Press the “set” button again to start the clock.

NOTE: The clock operates on battery power. Disconnecting the battery will stop the clock and require resetting.

The engine speed will automatically decrease to about 2000 r/min.

The overheat warning indicator will light or blink (depending on gauge type).

The buzzer will sound (if equipped on tiller handle, remote control box, or main switch panel).

The engine speed will automatically decrease to about 2000 r/min.

The low oil pressure warning indicator will light or blink (depending on gauge type).

The buzzer will sound (if equipped on tiller handle, remote control box, or main switch panel).

WARNING: Overpowering a boat could cause severe instability. Do not install a motor with more horsepower than the maximum rating on the boat’s capacity plate (or consult manufacturer).

WARNING: Improper mounting could result in hazardous conditions like poor handling, loss of control, or fire hazards.

For permanently mounted models: Your dealer or other person experienced in proper rigging should mount the motor. If mounting yourself, you should be trained by an experienced person.

For portable models: Your dealer or other experienced person should show you how to mount your motor.

Too high: Cavitation tends to occur, reducing propulsion. If propeller tips cut the air, engine speed rises abnormally, causing overheating.

Too low: Water resistance increases, reducing engine efficiency.

1. First hour: Run at 2000 r/min or approximately half throttle.

2. Second hour: Run at 3000 r/min or approximately three-quarter throttle.

3. Next eight hours: Avoid continuous operation at full throttle for more than five minutes at a time.

4. After the first 10 hours: Operate the engine normally.

Fuel: Check level, check for leaks or fumes, check line connections, ensure tank is secure and line is not twisted/flattened.

Controls: Check throttle, shift, and steering for proper operation (smooth, no binding, no unusual free play). Look for loose/damaged connections. Check starter/stop switches.

Engine: Check engine mounting, look for loose/damaged fasteners, check propeller for damage.

Battery (electric start): Check condition and connections.

Engine Oil Level: Check level using dipstick.

1. Put the outboard motor in an upright position (not tilted).

2. Remove the oil dipstick and wipe it clean.

3. Completely insert the dipstick back into its guide and remove it again.

4. Check the oil level shown on the dipstick. It should fall between the upper and lower marks.

5. If below the lower mark, add the recommended oil until it reaches the proper level. If above the upper mark, drain oil to the specified level.

NOTE: Be sure to completely insert the dipstick into the dipstick guide when checking.

1. Remove the fuel tank cap.

2. Carefully fill the fuel tank (do not overfill).

3. Securely close the cap after filling.

4. Wipe up any spilled fuel.

Fuel tank capacity: 25L

WARNING: Ensure boat is moored, clear of obstructions/swimmers. Gasoline vapor is flammable/explosive; avoid smoking/flames/sparks when loosening air vent screw. Avoid inhaling exhaust gas (carbon monoxide).

1. If the fuel tank cap has an air vent screw, loosen it 2 or 3 turns.

2. If there is a fuel joint on the motor, firmly connect the fuel line from the tank to the motor joint. Connect the other end to the tank joint.

3. If a steering friction adjuster is provided, securely attach the fuel line to the fuel line clamp.

4. Squeeze the primer pump, with the outlet end pointing up, until you feel it become firm.

NOTE: During operation, place the tank horizontally.

WARNING: Attach engine stop lanyard securely.

1. Place the remote control lever in the Neutral (N) position.

2. Attach the engine stop switch lanyard to a secure place on your clothing/arm/leg and install the lock plate onto the stop switch.

3. Turn the main switch to the “ON” position.

4. Turn the main switch to the “START” position and hold it. The starter motor will crank the engine.

5. Immediately after the engine starts, release the main switch, allowing it to return to “ON”.

CAUTION: Do not crank the engine for more than 5 seconds at a time. If it doesn’t start, wait 10 seconds before trying again. Never turn the switch to “START” while the engine is running.

1. After starting, allow the engine to idle for 3 minutes to warm up. Failure to do so may shorten engine life.

2. Check that the low oil pressure warning indicator goes off after starting.

3. Check for a steady flow of water from the cooling water pilot hole.

Tiller Handle Models:

1. Place the throttle grip in the fully closed (idle) position.

2. Move the gear shift lever quickly and firmly from neutral (N) to forward (F).

Remote Control Models:

1. With the engine at idle, pull up the neutral interlock trigger (if equipped).

2. Move the remote control lever quickly and firmly forward from neutral (N) into the forward detent.

WARNING: Operate slowly in reverse. Do not open the throttle more than half. Otherwise, the boat could become unstable, leading to loss of control and an accident.

Tiller Handle Models:

1. Place the throttle grip in the fully closed (idle) position.

2. Move the gear shift lever quickly and firmly from neutral (N) to reverse (R).

Remote Control Models:

1. With the engine at idle, pull up the neutral interlock trigger (if equipped).

2. Move the remote control lever quickly and firmly backward from neutral (N) into the reverse detent.

WARNING: Operate slowly in reverse. Do not open the throttle more than half. Otherwise, the boat could become unstable, leading to loss of control and an accident.

Tiller Handle Models:

1. Place the throttle grip in the fully closed (idle) position.

2. Check that the tilt lock lever is in the lock/down position.

3. Move the gear shift lever quickly and firmly from neutral (N) to reverse (R).

Remote Control Models:

1. With the engine at idle, check that the tilt lock lever is in the lock position.

2. Pull up the neutral interlock trigger (if equipped).

3. Move the remote control lever quickly and firmly backward from neutral (N) into the reverse detent.

Procedure:

1. Push and hold the engine stop button (if equipped) OR turn the main switch key to the “OFF” position.

2. After stopping, disconnect the fuel line if there is a fuel joint on the motor (especially if tilting or mooring).

3. Tighten the air vent screw on the fuel tank cap (if equipped).

4. Remove the key if the boat will be left unattended.

NOTE: The engine can also be stopped by pulling the lanyard and removing the lock plate from the engine stop switch.

WARNING:

Ensure all people are clear of the outboard motor when adjusting the angle.

Be careful not to pinch any body parts between the drive unit and clamp bracket.

Use caution when trying a trim position for the first time. Increase speed gradually and watch for instability or control problems. Improper trim can cause loss of control.

Stop the engine before adjusting the trim angle (for hydro tilt models).

Use the power tilt switch on the bottom engine cowling only when the boat is stopped with the engine off (for power trim/tilt models).

Use the switch on the remote control/tiller handle or the bottom cowling (engine off).

To raise the bow (trim-out): Press the switch “UP”.

To lower the bow (trim-in): Press the switch “DN”.

1. Stop the engine.

2. Place the tilt lock lever in the release position.

3. Hold the rear of the top cowling and manually tilt the engine to the desired angle.

4. Place the tilt lock lever back into the lock position to support the engine at that angle (within the trim range).

Adjusting Boat Trim:

Bow Up (Trim-out): Generally results in less drag, greater stability and efficiency when on plane (boat keel up 3-5 degrees). However, too much trim-out puts the bow too high, increases drag, pushes water, may cause propeller ventilation (loss of performance), and can cause the boat to “porpoise” (hop), potentially throwing occupants.

Bow Down (Trim-in): Makes it easier to accelerate onto plane from a standing start. However, too much trim-in causes the boat to “plow” through the water, decreasing fuel economy and making it hard to increase speed. Excessive trim-in at higher speeds makes the boat unstable and increases the danger of “bow steering,” making operation difficult and dangerous.

WARNING: Be sure all people are clear of the outboard motor when tilting up and down.

WARNING: Be careful not to pinch any body parts between the drive unit and engine bracket.

WARNING: Leaking fuel is a fire hazard. Disconnect the fuel line or close the fuel cock if the engine will be tilted for more than a few minutes.

1. Place the shift lever in neutral.

2. Disconnect the fuel line.

3. Place the tilt lock lever in the release position.

4. Hold the rear of the top cowling, tilt the engine fully up, and engage the tilt support lever (or knob) with the clamp bracket.

5. Place the tilt lock lever back into the lock position for additional support.

1. Place the shift lever in neutral.

2. Disconnect the fuel line or close the fuel cock.

3. Press the power trim/tilt switch “UP” until the motor has tilted up completely.

4. Push the tilt support knob into the clamp bracket or pull the tilt support lever toward you to support the engine.

WARNING: Be sure to support the motor with the tilt support lever/knob. Otherwise, it could fall back down if hydraulic pressure is lost.

5. Models with trim rods: Once supported, press the switch “DN” to retract the trim rods completely (protects them during mooring).

CAUTION: Retract trim rods completely during mooring to protect them.

1. Release the tilt lock lever (move to release position).

2. Slightly tilt the motor up to disengage the tilt support lever/knob, then pull out/return the support lever.

3. Slowly tilt the outboard motor down.

4. Place the tilt lock lever back in the lock position.

1. Push the power trim/tilt switch “UP” slightly until the tilt support lever/knob becomes free.

2. Release the tilt support lever or pull out the tilt support knob.

3. Push the power trim/tilt switch “DN” to lower the outboard motor to the desired position.

WARNING:

Place the gear shift in neutral before setting up the shallow water cruising system.

Run the boat at the lowest possible speed.

Use extra care when operating in reverse. Too much reverse thrust can cause the motor to lift out of the water, increasing accident/injury risk.

Return the outboard motor to its normal operating position as soon as the boat is back in deeper water.

1. Place the gear shift lever in neutral.

2. Pull the tilt lock lever up to the release position.

3. Slightly tilt the motor up to the desired position and push the tilt lock lever down to the lock position.

4. To return to normal position: Put shift in neutral, pull tilt lock lever to release, slowly tilt motor down, push tilt lock lever to lock position.

1. Place the gear shift lever in neutral.

2. Slightly tilt the outboard motor up to the desired position using the power trim/tilt switch (“UP”). The angle is limited by the trim rods in the down position.

3. To return to normal position: Use the power trim/tilt switch (“DN”) to lower the motor.

Flush the cooling passages with fresh water after each use in salty, polluted, or muddy water.

Using the built-in flushing connector:

1. Stop the engine.

2. Disconnect the garden hose connector from the flushing device fitting on the motor.

3. Connect a garden hose to the fitting.

4. Turn on the tap water.

5. Run fresh water through the passages for a few minutes.

6. Turn off the water, disconnect the hose, and reconnect the garden hose connector to the fitting.

CAUTION: Do not run the engine during flushing (unless using optional flushing attachment on water inlets) to avoid overheating and water pump damage.

Propeller shaft

Throttle cable joints, Shift cable joints

Steering hook, Steering cable end

Shift linkage, Throttle linkage

Tiller handle pivot

Clamp screw

The spark plug is a critical engine component. It should be periodically inspected.

1. Remove the spark plug cap and use a proper spark plug wrench to remove the spark plug.

2. Inspect the insulator. If it appears tan or light brown, the engine is in good condition. A very white insulator may indicate overheating; very dark may indicate fouling.

3. Clean the electrodes of carbon deposits using a wire brush or spark plug cleaner.

4. Check the spark plug gap using a wire thickness gauge. Adjust if necessary by carefully bending the outer electrode.

Recommended spark plug: LFR5A-11

Spark plug gap: 1.0–1.1 mm (0.039–0.043 in)

5. Reinstall the spark plug, tightening to the specified torque: 25 Nm (18.4 ft-lb) (2.5 kgf-m). If a torque wrench is unavailable, finger-tighten, then turn an additional 1/2 to 3/4 turn.

6. Reattach the spark plug cap securely.

WARNING: Leaking fuel can result in fire or explosion. Check fuel lines regularly. If a leak is found, the fuel system must be repaired by a qualified mechanic.

Check for fuel leakage regularly, especially when the boat is operating or moored.

Check points:

Fuel connections

Fuel filter

Fuel pump

Check fuel line surfaces for cracks or other damage.

Check the fuel tank and fuel line periodically for leaks, cracks, swelling, or other damage.

If any damage is found, the fuel system must be repaired or replaced.

WARNING: Gasoline is highly flammable. Avoid smoking, sparks, and flames.

Check the fuel filter visually. If any water or sediment is visible in the filter cup, or if the fuel flow seems restricted, the filter needs cleaning or replacement.

WARNING: Servicing the filter can cause fuel spillage. Clean up spills immediately. Dispose of rags properly. Keep away from ignition sources.

1. Stop the engine and allow it to cool.

2. Unscrew the filter cup from the filter housing. Have a rag ready for spills.

3. Inspect the filter element and O-ring. Clean the element with solvent if dirty. Replace if damaged.

4. Rinse the filter cup with clean gasoline and wipe it clean.

5. Ensure the O-ring is correctly seated and screw the cup back onto the housing until snug.

6. Restart the engine and check for leaks.

WARNING: Do not touch rotating parts. Keep hands, hair, clothing away.

CAUTION: This procedure must be performed out of the water with a flushing attachment or in the water at a mooring. An inductive tachometer is needed.

Start the engine and allow it to warm up fully in neutral. Once warmed up, verify the idle speed using the tachometer. The correct idle speed range should be listed in the Specifications section of your manual or consult your dealer. If adjustment is needed, consult a Yamaha dealer.

WARNING: Avoid contact with hot oil. Wear protective gear.

CAUTION: Change oil when the engine is warm. Do not pollute; dispose of used oil properly.

1. Warm up the engine.

2. Stop the engine and place it in an upright position.

3. Remove the top cowling.

4. Remove the oil filler cap.

5. Place a drain pan under the drain screw.

6. Remove the drain screw and gasket, and let the oil drain completely.

7. Wipe up any spilled oil.

8. Reinstall the drain screw and a new gasket, tightening securely.

9. Add the correct amount of recommended engine oil through the filler hole (approx. 2.5 L / 2.64 US qt).

10. Reinstall the filler cap.

11. Start the engine and let it idle for a few minutes, checking for leaks.

12. Stop the engine, wait a few minutes for oil to settle, then recheck the oil level using the dipstick. Add oil if necessary.

13. Reinstall the top cowling.

It’s recommended to change the oil filter cartridge at the same time oil is changed. Consult your dealer for filter replacement.

1. Check for fluid leaks by tilting the motor up and checking the PTT unit.

2. Check the fluid level in the reservoir. The level should be at the bottom of the filler plug hole when the unit is fully tilted up. Add recommended fluid (ATF Dexron II) if low.

3. Operate the PTT switch to ensure the motor tilts up and down smoothly.

4. Check that the trim rods are free of corrosion or scratches.

WARNING: Running a boat with a damaged propeller can be dangerous.

Cracks

Erosion from cavitation or ventilation

Bent or damaged blades

Damage to the splines or hub

Check the propeller shaft for damage if the propeller is damaged.

CAUTION: Always shift into neutral and remove the engine stop switch lock plate before servicing the propeller.

1. Shift into Neutral.

2. Straighten and remove the cotter pin from the propeller nut.

3. Remove the propeller nut, washer (if equipped), and spacer (if equipped).

4. Remove the propeller and thrust washer.

CAUTION: Ensure you install the thrust washer before the propeller, otherwise the lower case and propeller boss could be damaged. Use a new cotter pin and bend the ends securely.

1. Apply Yamaha marine grease to the propeller shaft.

2. Install the thrust washer onto the shaft.

3. Install the propeller onto the shaft splines.

4. Install the spacer (if equipped) and washer (if equipped).

5. Install the propeller nut and tighten it to the specified torque (consult dealer if unsure). Align a slot in the nut with the hole in the shaft.

6. Insert a new cotter pin into the hole and bend the pin ends securely around the nut.

NOTE: If the nut slots do not align with the hole after tightening, tighten slightly further to align.

WARNING: Be sure the motor is securely mounted. Never get under the lower unit while tilted, even if using the tilt support lever.

1. Tilt the outboard motor so the gear oil drain screw is at the lowest point possible.

2. Place a drain pan under the gear case.

3. Remove the gear oil drain screw and gasket.

4. Remove the oil level plug and gasket to allow oil to drain completely.

CAUTION: Inspect the used oil. If it is milky, water is entering the gear case, consult dealer.

5. With the motor vertical, use a flexible or pressurized filler device to inject recommended gear oil (Hypoid gear oil SAE#90) into the drain screw hole until oil flows from the oil level plug hole.

Gear oil quantity: 430 cm3 (14.54 US oz) (15.17 Imp.oz)

6. Reinstall the oil level plug and new gasket.

7. Quickly remove the filler device and reinstall the drain screw and new gasket. Tighten both screws securely.

WARNING: Clean the fuel tank in a well-ventilated area away from ignition sources.

Clean the inside of the fuel tank periodically. Empty the fuel tank into an approved container. Pour a small amount of suitable solvent into the tank, close it, and shake it. Drain the solvent completely. Dispose of used fuel and solvent according to local regulations.

Inspect the external sacrificial anodes periodically. Remove scales from the anode surfaces. Replace anodes if they have been reduced to about 2/3 of their original size or if they crumble.

CAUTION: Do not paint anodes, as this will render them ineffective. Also inspect internal anodes (cylinder head, thermostat cover) – consult dealer for service.

WARNING: Battery electrolyte is poisonous and dangerous. Avoid contact. Wear protective gear. Batteries produce explosive hydrogen gas. Keep sparks, flames, cigarettes away. Ventilate when charging/using in enclosed space.

1. Check the electrolyte level is between the upper and lower marks.

2. If low, remove vent caps and add distilled water only. Do not use tap water.

3. Check battery connections are clean, tight, and correctly installed (Red +, Black -).

4. Clean terminals if corroded using warm water and baking soda. Coat terminals with grease after cleaning and reconnecting.

NOTE: If battery needs charging, consult dealer.

WARNING: Connect the RED positive (+) cable FIRST, then the BLACK negative (-) cable LAST to avoid sparks.

Ensure the main switch is OFF. Connect the red battery cable to the POSITIVE (+) terminal first. Then connect the black battery cable to the NEGATIVE (-) terminal. Secure connections tightly but do not overtighten. Coat terminals with grease.

CAUTION: Disconnect the BLACK negative (-) cable FIRST, then the RED positive (+) cable LAST to prevent short circuits.

Ensure the main switch is OFF. Disconnect the black negative (-) cable first, then disconnect the red positive (+) cable.

Is the battery capacity low? (Charge)

Are battery terminals corroded/loose? (Clean/Tighten)

Is wiring damaged/disconnected? (Repair/Connect)

Is the fuse blown? (Replace)

Are starter components faulty? (Consult dealer)

Is the engine stop switch lanyard NOT attached? (Attach)

Are engine internal parts damaged? (Consult dealer)

Is the shift lever in gear? (Shift to Neutral)

Is the fuel tank empty? (Refuel)

Is the fuel contaminated or stale? (Replace fuel)

Is the fuel filter clogged? (Clean/Replace)

Is the fuel line kinked or pinched? (Check/Repair)

Is the fuel tank air vent closed? (Open)

Is the spark plug fouled or incorrect type/gap? (Clean/Adjust/Replace)

Are ignition parts faulty? (Consult dealer)

Is the spark plug fouled/incorrect? (Clean/Adjust/Replace)

Is the fuel system clogged/restricted? (Check filter, lines, tank vent)

Is fuel contaminated/stale? (Replace fuel)

Is the cooling water inlet clogged? (Check/Clean)

Is the thermostat faulty or clogged? (Consult dealer)

Is the propeller damaged/wrong pitch? (Inspect/Replace)

Is the trim angle incorrect? (Adjust)

Is the motor mounted at the wrong height? (Adjust height)

Is the boat bottom fouled? (Clean)

Are weeds entangled on lower unit? (Remove)

Are ignition parts faulty? (Consult dealer)

Is engine overheating (warning active)? (Stop, check cooling system)

Overheat: Stop engine, check cooling water inlet/pilot hole for blockage. Let engine cool. Consult dealer if persists.

Low oil pressure: Stop engine, check oil level, add if needed. Consult dealer if level is OK but warning persists.

Is the battery capacity low? (Charge)

Is the PTT fluid level low? (Fill)

Is the main switch ON? (Turn ON)

Is the fuse blown? (Replace)

Is the PTT switch faulty? (Consult dealer)

Is the PTT motor faulty? (Consult dealer)

Are wiring connections loose/corroded? (Check/Clean/Tighten)

Is the cooling water inlet clogged (overheating)? (Check/Clean)

Is the propeller damaged? (Inspect/Replace)

Are weeds entangled? (Remove)

Are there internal engine problems? (Consult dealer)

Is the throttle friction adjuster too tight? (Loosen)

Are linkages/cables incorrectly routed or kinked? (Check/Reroute)

Are linkages/cables lacking lubrication? (Lubricate)

Are linkages/cables damaged? (Consult dealer)

The fuse box is located on the side of the relay assembly.

1. Remove the fuse holder cover.

2. Remove the damaged fuse using the fuse puller provided inside the cover.

3. Install a new fuse of the correct amperage (specified on fuse box or label).

CAUTION: Never use a fuse with a higher amperage rating than recommended. This can cause severe damage to the electrical system.

4. Reinstall the cover.

If the new fuse blows immediately, consult your dealer.

WARNING: Use this procedure only in emergencies to return to port. Have the starting system repaired promptly. Ensure shift is in neutral. Keep clear of rotating flywheel. Do not use if flywheel cover is removed unless unavoidable.

1. Remove the top cowling.

2. Remove the flywheel cover (if equipped).

3. Disconnect the starter motor cable from the magnetic switch terminal.

4. Prepare the engine for starting (fuel, lanyard).

5. Turn the main switch to “ON”.

6. Touch the disconnected starter cable end to the positive (+) battery terminal briefly. The starter will crank. Release immediately when engine starts.

7. Reinstall flywheel cover and top cowling.

CAUTION: Do not attempt to run the motor until it has been completely inspected and serviced.

If the motor is submerged, take it to a Yamaha dealer immediately. Quick action is needed to minimize engine damage.

Procedure if dealer is unavailable:

1. Wash the motor with fresh water to remove salt/mud.

2. Remove spark plugs.

3. Drain water from cylinders by turning the flywheel manually or cranking with starter (after draining fuel system).

4. Drain fuel system (tank, lines, carburetor/injectors).

5. Change engine oil.

6. Spray fogging oil or lubricant into cylinders through spark plug holes while cranking.

7. Take the motor to a Yamaha dealer as soon as possible for complete service.

Dimension:

Overall length: 706 mm (27.8 in)

Overall width: 384 mm (15.1 in)

Overall height L:

F50FED 1415 mm (55.7 in)

F50FET 1415 mm (55.7 in)

F60CET 1415 mm (55.7 in)

FT50GET 1455 mm (57.3 in)

FT60DET 1455 mm (57.3 in)

Overall height X: 1569 mm (61.8 in)

Transom height L:

F50FED 527 mm (20.7 in)

F50FET 527 mm (20.7 in)

F60CET 527 mm (20.7 in)

FT50GET 530 mm (20.9 in)

FT60DET 530 mm (20.9 in)

Transom height X: 644 mm (25.4 in)

Weight (AL) L:

F50FED 107.0 kg (236 lb)

F50FET 110.0 kg (243 lb)

F60CET 110.0 kg (243 lb)

FT50GET 115.0 kg (254 lb)

FT60DET 115.0 kg (254 lb)

Weight (AL) X:

F50FET 114.0 kg (251 lb)

F60CET 114.0 kg (251 lb)

FT50GET 119.0 kg (262 lb)

FT60DET 119.0 kg (262 lb)

Performance:

Full throttle operating range: 5000–6000 r/min

Maximum output:

F50FED 36.8 kW@5500 r/min (50 HP@5500 r/min)

F50FET 36.8 kW@5500 r/min (50 HP@5500 r/min)

F60CET 44.1 kW@5500 r/min (60 HP@5500 r/min)

FT50GET 36.8 kW@5500 r/min (50 HP@5500 r/min)

FT60DET 44.1 kW@5500 r/min (60 HP@5500 r/min)

Idling speed (in neutral): 750 ±50 r/min

Engine:

Type: 4-stroke L

Displacement: 996.0 cm³ (60.78 cu.in)

Bore × stroke: 65.0 × 75.0 mm (2.56 × 2.95 in)

Ignition system: TCI

Spark plug (NGK): DPR6EB-9

Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)

Control system: Remote control

Starting system: Electric

Starting carburetion system: Electronic fuel injection

Valve clearance (cold engine) IN: 0.15–0.25 mm (0.0059–0.0098 in)

Valve clearance (cold engine) EX: 0.25–0.35 mm (0.0098–0.0138 in)

Min. cold cranking amps (CCA/EN): 430.0 A

Min. rated capacity (20HR/IEC): 70.0 Ah

Alternator output for battery DC: 17.0 A

Drive unit:

Gear positions: Forward-neutral-reverse

Gear ratio:

F50FED 1.85 (24/13)

F50FET 1.85 (24/13)

F60CET 1.85 (24/13)

FT50GET 2.33 (28/12)

FT60DET 2.33 (28/12)

Trim and tilt system:

F50FED Hydro tilt

F50FET Power trim and tilt

F60CET Power trim and tilt

FT50GET Power trim and tilt

FT60DET Power trim and tilt

Propeller mark:

F50FED G

F50FET G

F60CET G

FT50GET K

FT60DET K

Fuel and oil:

Recommended fuel: Regular unleaded gasoline

Min. research octane: 90

Recommended engine oil: 4-stroke outboard motor oil

Engine oil grade API: API SE, SF, SG, SH, SJ

Engine oil type SAE: SAE10W30 or SAE10W40

Lubrication: Wet sump

Engine oil quantity (excluding oil filter): 2.5 L (2.64 US qt) (2.20 Imp.qt)

Recommended gear oil: Hypoid gear oil SAE#90

Gear oil quantity:

F50FED 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

F50FET 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

F60CET 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

FT50GET 670.0 cm³ (22.65 US oz) (23.63 Imp.oz)

FT60DET 670.0 cm³ (22.65 US oz) (23.63 Imp.oz)

Tightening torque for engine:

Spark plug: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)

Propeller nut: 35.0 Nm (25.8 ft-lb) (3.57 kgf-m)

Engine oil drain bolt: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)

Engine oil filter: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)

WARNING:

Leaking fuel is a fire hazard. When transporting and storing the outboard motor, close the air vent screw and fuel cock to prevent fuel from leaking.

USE CARE when transporting fuel tank, whether in a boat or car.

DO NOT fill fuel container to maximum capacity. Gasoline will expand considerably as it warms up and can build up pressure in the fuel container. This can cause fuel leakage and a potential fire hazard.

Never get under the lower unit while it is tilted, even if a motor support bar is used. Severe injury could occur if the outboard motor accidentally falls.

CAUTION:

Do not use the tilt support lever or knob when trailering the boat. The outboard motor could shake loose from the tilt support and fall. If the motor cannot be trailered in the normal running position, use an additional support device to secure it in the tilt position.

To prevent problems which can be caused by oil entering the cylinder from the sump, keep the outboard motor in the attitude shown when transporting and storing it. If storing or transporting the outboard motor on its side (not upright), put it on a cushion after draining the engine oil.

Do not place the outboard motor on its side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trouble.

Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

Drain the remaining gasoline from the vapor separator. Gasoline left in the vapor separator for a prolonged period of time will break down and could cause damage to the fuel line.

When storing your Yamaha outboard motor for prolonged periods of time (2 months or longer), several important procedures must be performed to prevent excessive damage. It is advisable to have your outboard motor serviced by an authorized Yamaha dealer prior to storage. However, you, the owner, with a minimum of tools, can perform the following procedures:

CAUTION:

To prevent problems which can be caused by oil entering the cylinder from the sump, keep the outboard motor in the upright attitude when transporting and storing it. If storing or transporting the outboard motor on its side, put it on a cushion after draining the engine oil.

Do not place the outboard motor on its side before the cooling water has drained from it completely, otherwise water may enter the cylinder through the exhaust port and cause engine trouble.

Store the outboard motor in a dry, well-ventilated place, not in direct sunlight.

Drain the remaining gasoline from the vapor separator. Gasoline left in the vapor separator for a prolonged period of time will break down and could cause damage to the fuel line.

Procedure:

1. Flush the cooling system. Perform flushing and fogging at the same time.

2. Wash the outboard motor body using fresh water.

3. Disconnect the fuel line from the motor or shut off the fuel cock, if equipped.

4. Remove the top cowling and propeller.

5. Install the flushing attachment over the cooling water inlet.

6. Run the engine at a fast idle for a few minutes in neutral position with cooling water supplied.

7. Just prior to turning off the engine, quickly spray “Fogging Oil” alternately into the intake silencer or the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall.

8. Drain the remained gasoline in the vapor separator with a container. Loosen the drain screw, and then remove the cap. Push in the air valve with a screwdriver to introduce air into the float chamber, so that the gasoline will drain smoothly. Then, tighten the drain screw.

9. Remove the flushing attachment.

10. Install the top cowling.

11. If “Fogging Oil” is not available, turn off the engine after step 6. Then perform step 8.

12. Drain the cooling water completely out of the motor. Clean the body thoroughly.

13. If “Fogging Oil” is not available, remove the spark plug(s). Pour a teaspoonful of clean engine oil into each cylinder. Crank several times manually. Replace the spark plug(s).

14. Grease the spark plug threads and install the spark plug(s) and torque to proper specification.

15. Change the gear oil. Inspect the oil for the presence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.

16. Grease all grease fittings.

CAUTION:

Do not run the engine without supplying it with cooling water. Either the engine water pump will be damaged or the engine will be damaged from overheating. Before starting the engine, be sure to supply water to the cooling water passages.

Avoid running the outboard motor at high speed while on the flushing attachment, otherwise overheating could occur.

WARNING:

Do not touch or remove electrical parts when starting or during operation.

Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

Procedure:

1. Wash the outboard motor body using fresh water.

2. Disconnect the fuel line from the motor or shut off the fuel cock, if equipped.

3. Remove the top cowling and propeller.

4. Install the flushing attachment over the cooling water inlet.

5. Connect a water hose to the flushing attachment. Cooling system flushing is essential to prevent the cooling system from clogging up with salt, sand, or dirt. Perform the flushing and fogging at the same time.

NOTE:

When using the flushing attachment, maintain adequate water pressure and a steady water flow.

If the overheat warning device is activated, turn the engine off, and consult your Yamaha dealer.

6. Run the engine at a fast idle for a few minutes in neutral position.

7. Just prior to turning off the engine, quickly spray “Fogging Oil” alternately into the intake silencer or the fogging hole of the silencer cover, if equipped. When properly done, the engine will smoke excessively and almost stall.

8. Drain the remained gasoline in the vapor separator with a container. Loosen the drain screw, and then remove the cap. Push in the air valve with a screwdriver to introduce air into the float chamber, so that the gasoline will drain smoothly. Then, tighten the drain screw.

9. Remove the flushing attachment.

10. Install the top cowling.

11. If “Fogging Oil” is not available, turn off the engine after step 6. Then perform the step 8 procedure.

12. Drain the cooling water completely out of the motor. Clean the body thoroughly.

Perform this procedure right after operation for the most thorough flushing.

CAUTION: Do not leave the garden hose connector loose on the bottom cowling fitting or let the hose hang free during normal operation. Water will leak out of the connector instead of cooling the engine, which can cause serious overheating. Be sure the connector is tightened securely on the fitting after flushing the engine.

Procedure:

1. After shutting off the engine, unscrew the garden hose connector from the fitting on the bottom cowling.

2. Screw the garden hose connector onto a garden hose which is connected to a fresh water supply.

3. With the engine off, turn on the water tap and let the water flush through the cooling passages for about 15 minutes. Turn off the water and disconnect the garden hose.

4. When flushing is complete, reinstall the garden hose connector on the fitting on the bottom cowling. Tighten the connector securely.

NOTE:

When flushing the engine with the boat in the water, tilting up the outboard motor until it is completely out of the water will achieve better results.

1. Grease the spark plug threads and install the spark plug(s) and torque to proper specification.

2. Change the gear oil. Inspect the oil for the presence of water that indicates a leaky seal. Seal replacement should be performed by an authorized Yamaha dealer prior to use.

3. Grease all grease fittings. Use Yamaha grease A (water resistant grease) or Yamaha grease D (corrosion resistant grease; for propeller shaft) on the specified points.

WARNING: Battery electrolytic fluid is dangerous; it contains sulfuric acid and therefore is poisonous and highly caustic.

Always follow these preventive measures:

Avoid bodily contact with electrolytic fluid as it can cause severe burns or permanent eye injury.

Wear protective eye gear when handling or working near batteries.

Batteries also generate explosive hydrogen gas; therefore, you should always follow these preventive measures:

Charge batteries in a well-ventilated area.

Keep batteries away from fire, sparks, or open flames (for example: welding equipment, lighted cigarettes, and so on.)

DO NOT SMOKE when charging or handling batteries.

KEEP BATTERIES AND ELECTROLYTIC FLUID OUT OF REACH OF CHILDREN.

Antidote (EXTERNAL):

SKIN – Flush with water.

EYES – Flush with water for 15 minutes and get immediate medical attention.

Antidote (INTERNAL):

Drink large quantities of water or milk followed by milk of magnesia, beaten egg, or vegetable oil. Get immediate medical attention.

Batteries vary among manufacturers. Therefore the following procedures may not always apply. Consult your battery manufacturer’s instructions.

1. Disconnect and remove the battery from the boat. Always disconnect the black negative cable first to prevent the risk of shorting.

2. Clean the battery casing and terminals. Fill each cell to the upper level with distilled water. Ordinary tap water contains minerals harmful to a battery, and should not be used for topping up.

3. Store the battery on a level surface in a cool, dry, well-ventilated place out of direct sunlight.

4. Check the electrolyte level at least once a month. Fill to the manufacturer’s recommended level when necessary. Top up only with distilled water (or pure de-ionized water suitable to use in batteries).

5. Always keep the battery in a good state of charge. Installing a voltmeter will help you monitor your battery. If you will not use the boat for a month or more, remove the battery from the boat and store it in a cool, dark place. Completely recharge the battery before using it.

6. If the battery will be stored for longer than a month, check the specific gravity of the fluid at least once a month and recharge the battery when it is low.

NOTE: Consult a Yamaha dealer when charging or re-charging batteries.

CAUTION: A poorly maintained battery will quickly deteriorate.

Frequency of maintenance operations may be adjusted according to the operating conditions, but the following table gives general guidelines. Refer to the sections in this chapter for explanations of each owner-specific action. The “●” symbol indicates the check-ups which you may carry out yourself. The “○” symbol indicates work to be carried out by your Yamaha dealer.

NOTE: When operating in salt water, turbid or muddy water, the engine should be flushed with clean water after each use.

Maintenance Chart (Initial & Every)

Maintenance Chart (Additional)

WARNING: When removing or installing a spark plug, be careful not to damage the insulator. A damaged insulator could allow external sparks, which could lead to explosion or fire.

The spark plug is an important engine component and is easy to inspect. The condition of the spark plug can indicate something about the condition of the engine. You should periodically remove and inspect the spark plug because heat and deposits will cause the spark plug to slowly break down and erode. If electrode erosion becomes excessive, or if carbon and other deposits are excessive, you should replace the spark plug with another of the correct type.

Standard spark plug: DPR6EB-9

Before fitting the spark plug, measure the electrode gap with a wire thickness gauge; adjust the gap to specification if necessary.

Spark plug gap: 0.8–0.9 mm (0.031–0.035 in)

When fitting the plug, always clean the gasket surface and use a new gasket. Wipe off any dirt from the threads and screw in the spark plug to the correct torque.

Spark plug torque: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)

NOTE: If a torque-wrench is not available when you are fitting a spark plug, a good estimate of the correct torque is 1/4 to 1/2 a turn past finger-tight. Have the spark plug adjusted to the correct torque as soon as possible with a torque-wrench.

WARNING: Gasoline and its vapors are highly flammable and explosive. Keep away from sparks, cigarettes, flames, or other sources of ignition.

WARNING: Leaking fuel can result in fire or explosion.

Check for fuel leakage regularly.

If any fuel leakage is found, the fuel system must be repaired by a qualified mechanic. Improper repairs can make the outboard unsafe to operate.

Check the fuel lines for leaks, crack, or malfunction. If a problem is found, your Yamaha dealer or other qualified mechanic should repair it immediately.

Checkpoints:

Fuel system parts leakage

Fuel line joint leakage

Fuel line cracks or other damage

Fuel connector leakage

WARNING: Gasoline is highly flammable, and its vapors are flammable and explosive.

If you have any question about properly doing this procedure, consult your Yamaha dealer.

Do not perform this procedure on a hot or running engine. Allow the engine to cool.

There will be fuel in the fuel filter. Keep away from sparks, cigarettes, flames or other sources of ignition.

This procedure will allow some fuel to spill. Catch fuel in a rag. Wipe up any spilled fuel immediately.

The fuel filter must be reassembled carefully with the O-ring, filter cup, and hoses in place. Improper assembly or replacement could result in a fuel leak, which could result in a fire or explosion hazard.

NOTE: If any water is in the fuel, the float will rise. If so, remove the cup and drain the water.

Cleaning Procedure:

1. Remove the nut holding the fuel filter assembly if so equipped.

2. Unscrew the filter cup, catching any spilled fuel in a rag.

3. Remove the filter element, and wash it in solvent. Allow it to dry. Inspect the filter element and O-ring to make sure they are in good condition. Replace them if necessary. If any water is found in the fuel, the Yamaha portable fuel tank or other fuel tanks should be checked and cleaned.

4. Reinstall the filter element in the cup. Make sure the O-ring is in proper position in the cup. Firmly screw the cup onto the filter housing.

5. Attach the filter assembly to the bracket.

6. Run the engine and check the filter and lines for leaks.

WARNING:

Do not touch or remove electrical parts when starting or during operation.

Keep hands, hair, and clothes away from the flywheel and other rotating parts while the engine is running.

CAUTION: This procedure must be performed while the outboard motor is in the water. A flushing attachment or test tank can be used.

A diagnostic tachometer should be used for this procedure. Results may vary depending on whether testing is conducted with the flushing attachment, in a test tank, or with the outboard motor in the water.

1. Start the engine and allow it to warm up fully in neutral until it is running smoothly.

NOTE: Correct idling speed inspection is only possible if the engine is fully warmed up. If not warmed up fully, the idle speed will measure higher than normal. If you have difficulty verifying the idle speed, or the idle speed requires adjustment, consult a Yamaha dealer or other qualified mechanic.

2. Verify whether the idle speed is set to specification. For idle speed specifications, see the Specifications section (750 ±50 r/min).

WARNING:

Avoid draining the engine oil immediately after stopping the engine. The oil is hot and should be handled with care to avoid burns.

Be sure the outboard motor is securely fastened to the transom or a stable stand.

CAUTION:

Do not overfill the oil, and be sure the outboard motor is upright (not tilted) when checking and changing the engine oil.

If the oil level is above the upper level mark, drain until the level meets the specified capacity. Overfilling the oil could cause leakage or damage.

Change the engine oil after the first 10 hours of operation, and every 100 hours or at 6-month intervals thereafter. Otherwise the engine will wear quickly.

NOTE: Change the engine oil when the oil is still warm.

Procedure:

1. Put the outboard motor in an upright position (not tilted).

2. Prepare a suitable container that holds a larger amount than the engine oil capacity. Loosen and remove the drain screw while holding the container under the drain hole. Then remove the oil filler cap. Let the oil drain completely. Wipe up any spilled oil immediately.

3. Put a new gasket on the oil drain screw. Apply a light coat of oil to the gasket and install the drain screw.

Drain screw tightening torque: 18.0 Nm (13.3 ft-lb) (1.84 kgf-m)

NOTE: If a torque wrench is not available when you are installing the drain screw, finger tighten the screw just until the gasket comes into contact with the surface of the drain hole. Then tighten 1/4 to 1/2 turn more. Tighten the drain screw to the correct torque with a torque wrench as soon as possible.

4. Add the correct amount of oil through the filler hole. Install the filler cap.

Recommended engine oil: 4-stroke outboard motor oil

Engine oil quantity (excluding oil filter): 2.5 L (2.64 US qt) (2.20 Imp.qt)

5. Start the engine and watch to make sure the low oil pressure warning indicator (if equipped) turns off. Make sure that there are no oil leaks.

CAUTION: If the low oil pressure warning indicator does not turn off or if there are oil leaks, stop the engine and find the cause. Continued operation with a problem could cause severe engine damage. Consult your Yamaha dealer if the problem cannot be located and corrected.

6. Turn off the engine and wait 3 minutes. Recheck the oil level using the dipstick to be sure the level falls between the upper and lower marks. Fill with oil if it is below the lower mark, or drain to the specified level if it is above the upper mark.

7. Dispose of used oil according to local regulations.

NOTE: For more information on the disposal of used oil, consult your Yamaha dealer. Change the oil more often when operating the engine under adverse conditions such as extended trolling.

Check that each grounding wire is properly secured.

Check that each connector is engaged securely.

NOTE: If any leaks are found, consult your Yamaha dealer.

WARNING:

Never get under the lower unit while it is tilted, even when the tilt support lever is locked. Severe injury could occur if the outboard motor accidentally falls.

Make sure no one is under the outboard motor before performing this test.

1. Check the power trim and tilt unit for any sign of oil leaks.

2. Operate each of the power trim and tilt switches / the power tilt switches on the remote control and engine bottom cowling (if equipped) to check that all switches work.

3. Tilt the outboard motor up and check that the trim and tilt rod is pushed out completely.

4. Check that the trim and tilt rod is free of corrosion or other flaws.

5. Tilt the outboard motor down. Check that the trim and tilt rod operates smoothly.

NOTE: Consult your Yamaha dealer if any operation is abnormal.

WARNING: You could be seriously injured if the engine accidentally starts when you are near the propeller.

Before inspecting, removing, or installing the propeller, remove the spark plug caps from the spark plugs. Also, place the shift control in neutral, turn the main switch to “OFF” (off) and remove the key, and remove the lanyard from the engine stop switch. Turn off the battery cut-off switch if your boat has one.

Do not use your hand to hold the propeller when loosening or tightening the propeller nut. Put a wood block between the anti-cavitation plate and the propeller to prevent the propeller from turning.

Checkpoints:

Check each of the propeller blades for wear, erosion from cavitation or ventilation, or other damage.

Check the propeller shaft for damage.

Check the splines / shear pin for wear or damage.

Check for fish line tangled around the propeller shaft.

Check the propeller shaft oil seal for damage.

NOTE: If the shear pin equipped: it is designed to break if the propeller hits a hard underwater obstacle to help protect the propeller and drive mechanism. The propeller will then spin freely on the shaft. If this happens, the shear pin must be replaced.

1. Straighten the cotter pin and pull it out using a pair of pliers.

2. Remove the propeller nut, washer, and spacer (if equipped).

3. Remove the propeller and thrust washer.

CAUTION:

Be sure to install the thrust washer before installing the propeller, otherwise the lower case and propeller boss could be damaged.

Be sure to use a new cotter pin and bend the ends over securely. Otherwise the propeller could come off during operation and be lost.

1. Apply Yamaha marine grease or a corrosion resistant grease to the propeller shaft.

2. Install the spacer (if equipped), thrust washer, and propeller on the propeller shaft.

3. Install the spacer (if equipped) and the washer. Tighten the propeller nut to the specified torque.

Propeller nut tightening torque: 35.0 Nm (25.8 ft-lb) (3.57 kgf-m)

4. Align the propeller nut with the propeller shaft hole. Insert a new cotter pin in the hole and bend the cotter pin ends.

NOTE: If the propeller nut does not align with the propeller shaft hole after tightening to the specified torque, tighten the nut further to align it with the hole.

WARNING:

Be sure the outboard motor is securely fastened to the transom or a stable stand. You could be severely injured if the outboard motor falls on you.

Never get under the lower unit while it is tilted, even when the tilt support lever or knob is locked. Severe injury could occur if the outboard motor accidentally falls.

1. Tilt the outboard motor so that the gear oil drain screw is at the lowest point possible.

2. Place a suitable container under the gear case.

3. Remove the gear oil drain screw.

NOTE: If the magnetic gear oil drain screw equipped: remove all metal particles from the screw before installing it.

4. Remove the oil level plug to allow the oil to drain completely.

CAUTION: Inspect the used oil after it has been drained. If the oil is milky, water is getting into the gear case which can cause gear damage. Consult a Yamaha dealer for repair of the lower unit seals.

NOTE: For disposal of used oil consult your Yamaha dealer.

5. With the outboard motor in a vertical position, and using a flexible or pressurized filling device, inject the gear oil into the gear oil drain screw hole.

Recommended gear oil: Hypoid gear oil SAE#90

Gear oil quantity:

F50FED 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

F50FET 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

F60CET 430.0 cm³ (14.54 US oz) (15.17 Imp.oz)

FT50GET 670.0 cm³ (22.65 US oz) (23.63 Imp.oz)

FT60DET 670.0 cm³ (22.65 US oz) (23.63 Imp.oz)

6. When the oil begins to flow out of the oil level plug hole, insert and tighten the oil level plug.

7. Insert and tighten the gear oil drain screw.

WARNING: Gasoline is highly flammable, and its vapors are flammable and explosive.

If you have any question about properly doing this procedure, consult your Yamaha dealer.

Keep away from sparks, cigarettes, flames, or other sources of ignition when cleaning the fuel tank.

Remove the fuel tank from the boat before cleaning it. Work only outdoors in an area with good ventilation.

Wipe up any spilled fuel immediately.

Reassemble the fuel tank carefully. Improper assembly can result in a fuel leak, which could result in a fire or explosion hazard.

Dispose of old gasoline according to local regulations.

1. Empty the fuel tank into an approved container.

2. Pour a small amount of suitable solvent into the tank. Install the cap and shake the tank. Drain the solvent completely.

3. Remove the screws holding the fuel joint assembly. Pull the assembly out of the tank.

4. Clean the filter (located on the end of the suction pipe) in a suitable cleaning solvent. Allow the filter to dry.

5. Replace the gasket with a new one. Reinstall the fuel joint assembly and tighten the screws firmly.

CAUTION: Do not paint anodes, as this would render them ineffective.

NOTE: Inspect ground leads attached to external anodes on equipped models. Consult a Yamaha dealer for inspection and replacement of internal anodes attached to the power unit.

WARNING: Mount the battery holder securely in a dry, well-ventilated, vibration-free location in the boat. Install a fully charged battery in the holder.

CAUTION:

Make sure the main switch (on applicable models) is “OFF” (off) before working on the battery.

Reversal of the battery cables will damage the electrical parts.

Connect the red battery cable first when installing the battery and disconnect the black battery cable first when removing it. Otherwise, the electrical parts can be damaged.

The electrical contacts of the battery and cables must be clean and properly connected, or the battery will not start the engine.

Connect the red battery cable to the POSITIVE (+) terminal first. Then connect the black battery cable to the NEGATIVE (-) terminal.

Q. Is battery capacity weak or low?

A. Check battery condition. Use battery of recommended capacity.

Q. Are battery connections loose or corroded?

A. Tighten battery cables and clean battery terminals.

Q. Is fuse for electric start relay or electric circuit blown?

A. Check for cause of electric overload and repair. Replace fuse with one of correct amperage.

Q. Are starter components faulty?

A. Have serviced by a Yamaha dealer.

Q. Is shift lever in gear?

A. Shift to neutral.

Q. Is fuel tank empty?

A. Fill tank with clean, fresh fuel.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace filter.

Q. Is starting procedure incorrect?

A. See starting instructions in the manual.

Q. Has fuel pump malfunctioned?

A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrect type?

A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Are spark plug cap(s) fitted incorrectly?

A. Check and re-fit cap(s).

Q. Is ignition wiring damaged or poorly connected?

A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Are ignition parts faulty?

A. Have serviced by a Yamaha dealer.

Q. Is engine stop switch lanyard not attached?

A. Attach lanyard.

Q. Are engine inner parts damaged?

A. Have serviced by a Yamaha dealer.

Q. Are spark plug(s) fouled or of incorrect type?

A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Is fuel system obstructed?

A. Check for pinched or kinked fuel line or other obstructions in fuel system.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is fuel filter clogged?

A. Clean or replace filter.

Q. Have ignition parts failed?

A. Have serviced by a Yamaha dealer.

Q. Has warning system activated?

A. Find and correct cause of warning.

Q. Is spark plug gap incorrect?

A. Inspect and adjust as specified.

Q. Is ignition wiring damaged or poorly connected?

A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Is specified engine oil not being used?

A. Check and replace oil as specified.

Q. Is thermostat faulty or clogged?

A. Have serviced by a Yamaha dealer.

Q. Are carburetor adjustments incorrect?

A. Have serviced by a Yamaha dealer.

Q. Is fuel pump damaged?

A. Have serviced by a Yamaha dealer.

Q. Is air vent screw on fuel tank closed?

A. Open air vent screw.

Q. Is choke knob pulled out?

A. Return to home position.

Q. Is motor angle too high?

A. Return to normal operating position.

Q. Is carburetor clogged?

A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is throttle valve adjustment incorrect?

A. Have serviced by a Yamaha dealer.

Q. Is battery cable disconnected?

A. Connect securely.

Q. Is cooling system clogged?

A. Check water intake for restriction.

Q. Is engine oil level low?

A. Fill oil tank with specified engine oil.

Q. Is heat range of spark plug incorrect?

A. Inspect spark plug and replace it with recommended type.

Q. Is specified engine oil not being used?

A. Check and replace oil with specified type.

Q. Is engine oil contaminated or deteriorated?

A. Replace oil with fresh, specified type.

Q. Is oil filter clogged?

A. Have serviced by a Yamaha dealer.

Q. Has oil feed/injection pump malfunctioned?

A. Have serviced by a Yamaha dealer.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller pitch or diameter incorrect?

A. Install correct propeller to operate outboard at its recommended speed (r/min) range.

Q. Is trim angle incorrect?

A. Adjust trim angle to achieve most efficient operation.

Q. Is motor mounted at incorrect height on transom?

A. Have motor adjusted to proper transom height.

Q. Has warning system activated?

A. Find and correct cause of warning.

Q. Is boat bottom fouled with marine growth?

A. Clean boat bottom.

Q. Are spark plug(s) fouled or of incorrect type?

A. Inspect spark plug(s). Clean or replace with recommended type.

Q. Are weeds or other foreign matter tangled on gear housing?

A. Remove foreign matter and clean lower unit.

Q. Is fuel system obstructed?

A. Check for pinched or kinked fuel line or other obstructions in fuel system.

Q. Is fuel filter clogged?

A. Clean or replace filter.

Q. Is fuel contaminated or stale?

A. Fill tank with clean, fresh fuel.

Q. Is spark plug gap incorrect?

A. Inspect and adjust as specified.

Q. Is ignition wiring damaged or poorly connected?

A. Check wires for wear or breaks. Tighten all loose connections. Replace worn or broken wires.

Q. Have ignition parts failed?

A. Have serviced by a Yamaha dealer.

Q. Is specified engine oil not being used?

A. Check and replace oil with specified type.

Q. Is thermostat faulty or clogged?

A. Have serviced by a Yamaha dealer.

Q. Is air vent screw closed?

A. Open the air vent screw.

Q. Is fuel pump damaged?

A. Have serviced by a Yamaha dealer.

Q. Is fuel joint connection incorrect?

A. Connect correctly.

Q. Is heat range of spark plug incorrect?

A. Inspect spark plug and replace it with recommended type.

Q. Is high pressure fuel pump drive belt broken?

A. Have serviced by a Yamaha dealer.

Q. Is engine not responding properly to shift lever position?

A. Have serviced by a Yamaha dealer.

Q. Is propeller damaged?

A. Have propeller repaired or replaced.

Q. Is propeller shaft damaged?

A. Have serviced by a Yamaha dealer.

Q. Are weeds or other foreign matter tangled on propeller?

A. Remove and clean propeller.

Q. Is motor mounting bolt loose?

A. Tighten bolt.

Q. Is steering pivot loose or damaged?

A. Tighten or have serviced by a Yamaha dealer.

WARNING: The outboard motor can be seriously damaged by a collision while operating or trailering. Damage could make the outboard motor unsafe to operate.

If the outboard motor hits an object in the water, follow the procedure below:

1. Stop the engine immediately.

2. Inspect the control system and all components for damage. Also inspect the boat for damage.

3. Whether damage is found or not, return to the nearest harbor slowly and carefully.

4. Have a Yamaha dealer inspect the outboard motor before operating it again.

WARNING: Be sure to use the specified fuse. An incorrect fuse or a piece of wire could allow excessive current flow. This could cause electric system damage and a fire hazard.

NOTE: Consult your Yamaha dealer if the new fuse immediately blows again.

1. Loosen the manual valve screw by turning it counterclockwise until it stops.

2. Put the engine in the desired position, then tighten the manual valve screw by turning it clockwise.

WARNING:

Use this procedure only in an emergency and only to return to port for repairs.

When the emergency starter rope is used to start the engine, the start-in-gear protection device does not operate. Make sure the remote control lever is in neutral. Otherwise the boat could unexpectedly start to move, which could result in an accident.

Attach the engine stop switch lanyard to a secure place on your clothing, or your arm or leg while operating.

Do not attach the lanyard to clothing that could tear loose. Do not route the cord where it could become entangled, preventing it from functioning.

Avoid accidentally pulling the lanyard during normal operation. Loss of engine power means the loss of most steering control. Also, without engine power, the boat could slow rapidly. This could cause people and objects in the boat to be thrown forward.

Be sure no one is standing behind you when pulling the starter rope. It could whip behind you and injure someone.

An unguarded, rotating flywheel is very dangerous. Keep loose clothing and other objects away when starting the engine. Use the emergency starter rope only as instructed. Do not touch the flywheel or other moving parts when the engine is running. Do not install the starter mechanism or top cowling after the engine is running.

Do not touch the ignition coil, spark plug wire, spark plug cap, or other electrical components when starting or operating the motor. You could get an electrical shock.

Do not install the top cowling when engine is running.

Emergency starting engine procedure:

1. Remove the top cowling.

2. Remove the flywheel cover.

3. Prepare the engine for starting. Be sure the engine is in neutral and that the engine stop switch lanyard lock plate is attached to the engine stop switch.

4. Turn on the main switch.

5. Insert the knotted end of the emergency starter rope into the notch in the flywheel rotor and wind the rope around the flywheel several turns clockwise.

6. Give a strong pull straight out to crank the engine. Repeat if necessary.

Procedure:

1. Thoroughly wash away mud, salt, seaweed, and so on, with fresh water.

2. Remove the spark plugs and face the spark plug holes downward to allow any water, mud, or contaminants to drain.

3. Drain the fuel from the vapor separator, fuel filter, and fuel line.

4. Feed fogging oil or engine oil through the intake manifold and spark plug holes while cranking with the emergency starter rope.

5. Take the outboard motor to a Yamaha dealer as soon as possible.

CAUTION: Do not attempt to run the outboard motor until it has been completely inspected.