SHINDAIWA 358TS (02) PDF DOCUMENT

KICKBACK may occur when the nose or tip of the guide bar touches an object, or when the wood closes in and pinches the saw chain in the cut. Do not rely exclusively upon the safety devices built into your saw. As a chain saw user, you should take several steps to keep your cutting jobs free from accident or injury.

1. With a basic understanding of kickback, you can reduce or eliminate the element of surprise. Sudden surprise contributes to accidents.

2. Keep a good firm grip on the saw with both hands, the right hand on the rear handle, and the left hand on the front handle, when the engine is running. Use a firm grip with thumbs and fingers encircling the chain saw handles. A firm grip will help you reduce kickback and maintain control of the saw. Don’t let go.

3. Make sure that the area in which you are cutting is free from obstructions. Do not let the nose of the guide bar contact a log, branch, or any other obstruction which could be hit while you are operating the saw.

4. Cut at high engine speeds.

5. Do not overreach or cut above shoulder height.

6. Follow manufacturer’s sharpening and maintenance instructions for the saw chain.

7. Only use replacement bars and chains specified by the manufacturer or the equivalent.

The Kick Guard® device is not installed on the guide bar when you purchase your shindaiwa chain saw. The Kick Guard® can be used in a majority of cutting operations, and is especially recommended for beginners, homeowners, or chain saw novices.

1. Do not operate a chain saw with one hand! A chain saw is intended for two-handed use.

2. Do not operate a chain saw when you are fatigued.

3. Use safety footwear, snug-fitting clothing and protective gloves. Wear eye, hearing, and head protection devices.

4. Use caution when handling fuel. Move the chain saw at least 3 m (10 feet) from the fueling point before starting the engine.

5. Do not allow other persons to be near the chain saw when starting or cutting. Keep bystanders and animals out of the work area.

6. Do not start cutting until you have a clear work area, secure footing, and a planned retreat path from the falling tree.

7. Keep all parts of your body away from the saw chain when the engine is running.

8. Before you start the engine, make sure that the saw chain is not contacting anything.

9. Carry the chain saw with the engine stopped, the guide bar and saw chain to the rear, and the muffler away from your body. When carrying with the engine running, push the front hand guard forward to engage the chain brake.

10. Do not operate a chain saw that is damaged, improperly adjusted, or not completely and securely assembled. Be sure that the saw chain stops moving when the throttle control trigger is released.

11. Shut off the engine before setting the chain saw down.

12. Use extreme caution when cutting small size brush and saplings as slender material may catch the saw chain and be whipped toward you or pull you off balance.

13. When cutting a limb that is under tension, be alert for spring-back so that you will not be struck when the tension in the wood fibers is released.

14. Keep the handles dry, clean, and free of oil or fuel mixture.

15. Operate the chain saw only in well ventilated areas.

16. Do not operate a chain saw in a tree unless you have been specifically trained to do so.

17. All chain saw service, other than items listed in the Instruction manual, should be performed by competent service personnel.

18. When transporting your chain saw, use the appropriate guide bar scabbard.

19. Do not operate the chain saw with a loose or defective muffler. Do not remove the spark arrestor screen.

DANGER: The safety alert symbol accompanied by the word “DANGER” calls attention to an act or condition which WILL lead to serious personal injury or death if not avoided.

WARNING: The safety alert symbol accompanied by the word “WARNING” calls attention to an act or condition which CAN lead to serious personal injury or death if not avoided.

CAUTION: The safety alert symbol accompanied by the word “CAUTION” calls attention to an act or condition which may lead to minor or moderate personal injury if not avoided.

CIRCLE AND SLASH SYMBOL: This symbol means the specific action shown is prohibited. Ignoring these prohibitions can result in serious or fatal injury.

NOTICE: This enclosed message provides tips for use, care and maintenance of the unit.

IMPORTANT: The enclosed message provides information necessary for the protection of the unit.

The shindaiwa product you purchased has been factory pre-assembled for your convenience. Due to packaging restrictions, guide bar and saw chain installation and other assembly may be necessary. After opening the carton, check for damage. Use the packing list to check for missing parts:

• shindaiwa chain saw

• 13 x 19 mm T-wrench, L-wrench (T27)

• Instruction manual

• Safety manual

• Handle adaptor (Select the handle adaptor that fits you the best)

• Warranty sheet

• Guide bar

• Saw chain

• Kick Guard®

1. Instruction manual – Included with unit. Read before operation and keep for future reference.

2. Safety manual – Describe operating and safety instructions for this chain saw.

3. Front hand guard – Guard between the front handle and the saw chain for protecting the hand from injuries and aiding in control. This guard is also used to lock the chain brake.

4. Rear handle (for the right hand) – Support handle located on the top of the engine housing.

5. Muffler cover – Covers the muffler to prevent operator contact with the hot surface.

6. Clutch cover – Protective cover for the guide bar, saw chain, clutch, and sprocket.

7. Chain tension adjuster – Device to adjust chain tension.

8. Chain catcher – A projection designed to reduce the risk of the operator’s right hand from being hit by a broken or derailed chain.

9. Spiked bumper – Device fitted in front of the guide bar mounting point, acting as a pivot when in contact with a tree or log.

10. Guide bar – The part that supports and guides the saw chain.

11. Saw chain – Chain serving as a cutting tool.

12. Bar tip guard – Anti-kickback device attached on the bar nose.

13. Fuel tank cap – For closing the fuel tank.

14. Oil tank cap – For closing the oil tank.

15. Starter handle – Pull handle to start the engine. Pull slowly until starter engages then quickly and firmly. Return handle slowly after engine starts.

16. Cleaner cover knob – Device for installing the air cleaner cover.

17. Air cleaner cover – Covers air cleaner.

18. Purge pump – When starting engine, push purge pump 3 or 4 times.

19. Throttle trigger – Device activated by the operator’s finger for controlling engine speed.

20. Throttle trigger lockout – A safety lever which must be depressed before the throttle trigger can be activated.

21. Control lever – Device for connecting/disconnecting the ignition system (starting/stopping), and for enriching the fuel/air mixture for cold starts.

22. Front handle (for the left hand) – Support handle located at the left side of the engine housing.

23. Lifting hook – If working off the ground the operator must be trained in safe climbing techniques and use of all recommended safety equipment.

VIBRATION AND COLD

It is believed that a condition called Raynaud’s Phenomenon, which affects the fingers of certain individuals, may be brought about by exposure to vibration and cold. The following precautions are strongly recommended:

• Keep your body warm, especially the head and neck, feet and ankles and hands and wrists.

• Maintain good blood circulation by performing vigorous arm exercises during frequent work breaks and also by not smoking.

• Limit the number of hours of operation.

• Try to fill each day with jobs where operating the chain saw, or other hand-held power equipment is not required.

• If you experience discomfort, redness and swelling of the fingers, followed by whitening and loss of feeling, consult your physician before further exposing yourself to cold and vibration.

REPETITIVE STRESS INJURY (RSI)

Over-using the muscles and tendons of the fingers, hands, arms and shoulders may cause soreness, swelling, numbness, weakness and extreme pain. To reduce the risk of RSI/CTS:

• Avoid using your wrist in a bent, extended or twisted position.

• Take periodic breaks to minimize repetition and rest your hands.

• Reduce the speed and force in which you do the repetitive movement.

• Do exercises to strengthen hand and arm muscles.

• See a doctor if you feel tingling, numbness or pain in your fingers, hands, wrists or arms. The sooner RSI/CTS is diagnosed, the more likely permanent nerve and muscle damage can be prevented.

EYE AND HEARING PROTECTION

• Wear eye protection goggles that meet ANSI Z 87.1 requirements. Goggles meeting the requirements have the mark “Z 87” stamped on them.

• Wear hearing protection. If this guideline is not followed, hearing loss can occur. shindaiwa recommends wearing hearing protection at all times.

WEAR PROPER CLOTHING

• Snug fitting durable clothing should be worn. Pants should have long legs, do not wear shorts. Do not wear loose fitting clothing, scarves, neckties, jewelry or any item that may become tangled.

• Wear shoes with non-skid soles. Do not wear open toed shoes or operate unit barefooted.

• Wear no-slip, heavy duty work gloves to improve your grip on the chain saw handles and reduce the transmission of machine vibration to your hands.

HOT HUMID WEATHER

• Heavy protective clothing can increase operator fatigue which may lead to heat stroke. Schedule heavy work for early morning, or late afternoon hours when temperatures are cooler.

AVOID HOT SURFACES

• During operation, the muffler or catalytic muffler and surrounding cover become hot.

• Never suspend the saw on a lanyard with the engine running.

• Always use the saw from the right-hand side of your body – never from the left side.

• Always wear proper safety clothing to protect your lower body from sharp saw chain and hot muffler.

• Always keep exhaust area clear of flammable debris during transportation or when storing, otherwise serious property damage or personal injury may result.

• The spark arrestor muffler controls the exhaust noise and prevents hot, glowing particles of carbon from leaving the muffler. Make sure the spark arrestor screen is in good repair and properly seated in the muffler.

• Certain internal combustion engines operated on forest, brush, and/or grass-covered areas in some states are required to be equipped with a spark arrestor. This requirement also applies to all U.S. Forest Service lands. Check with your local or state authorities for specific regulations in your area. Failure to follow these requirements is a violation of the law.

DANGER: Kickback safety precaution for chain saw users: Kickback may occur when the nose or tip of the guide bar touches an object or when the wood closes in and pinches the saw chain in the cut.

The installation of a chain brake may be mandatory by law or as stipulated by insurance regulations in your area of operation. You should inquire through local government offices, your employer or your local dealer to ensure that your chain saw conforms to the required safety standard.

shindaiwa chain brakes have been designed and tested to comply with international safety standards. This model needs to use low-kickback chain and bar. Do not use a combination other than those specified. For your own safety, do not remove the chain brake system.

Safety Standards:

• USA: ANSI Standard B175.1 Safety Requirement for chain saws

• Canada: CSA Standard Z 62.1 CHAIN SAWS

WARNING: ANSI Standard B175.1 stipulates that the brake shall stop the chain 0.12 seconds at an engine speed of 13500 r/min. It is the responsibility of the owner/operator to ensure that the brake is serviced, adjusted and tested strictly in accordance with the instructions as detailed herein in order to ensure that the brake performance is maintained in compliance with the Standard B175.1.

WARNING: Saw chain is sharp! Always wear gloves when handling assembly, otherwise serious personal injury may result.

Tools Needed: Two 3/8 in. Wrenches.

For saws with Kick Guard® P/N 2894902 and Symmetrical Low-Kick type guide bars.

1. Install 8-32 bolt in the small hole of the Kick Guard® and through the small hole in the guide bar.

2. IMPORTANT: Dimple in Kick Guard® (A) must engage the recess in the guide bar (B).

3. Tighten nut (C) and bolt by hand until snug. Make certain the Kick Guard® is flush against the guide bar.

4. Tighten nut an additional 1/2 turn.

5. Check to make certain the Kick Guard® is tight on the guide bar.

NOTICE

• Move the chain brake lever (Front hand guard) fully rearward to remove or install the clutch cover to chain saw.

• Align the brake connector of the clutch cover to the groove on the side of the brake lever (Front hand guard).

1. Remove spark plug lead.

2. Remove the clutch cover nuts and remove the clutch cover.

3. Remove the bar and saw chain if necessary. See the “Maintenance and Care” section for guide bar/saw chain maintenance procedures.

4. Mount the guide bar on studs and slide toward the clutch to make saw chain installation easier. Install the chain with the cutters on top of the guide bar facing forward.

5. Unlock the chain brake, and install the clutch cover over the guide bar studs. Ensure the chain tension adjuster pin fits into the guide bar adjuster hole, and that the brake band is positioned around the clutch drum. Tighten clutch cover nuts finger tight.

6. Turn the saw over, and check the brake band for correct position on the clutch drum. If the brake band is not in place around the drum, remove the cover, make sure the brake is unlocked, and reinstall. Tighten clutch cover nuts finger tight.

WARNING: Improper clutch cover assembly can result in serious injury, and will cause severe saw damage if the unit is started. Never start or operate the saw if the brake band is not in place on the clutch drum. Always check chain brake operation after replacing the cover. Do not use the saw if the chain brake does not function properly.

IMPORTANT: Always loosen clutch cover nuts before turning the chain tension adjuster, otherwise the clutch cover and tensioner will be damaged.

1. Remove spark plug lead.

2. Unlock the chain brake and loosen a clutch cover nut, if necessary.

3. Hold the bar nose up, and turn the adjuster screw clockwise until the chain fits snugly against the underside of the bar.

4. Tighten both nuts with the bar nose held up.

5. Pull the chain around the bar by hand. Loosen the adjustment if you feel tight spots.

6. When the chain is properly tensioned, tighten the clutch cover nuts securely to 20 to 23 N·m (175 to 200 in. lb.).

7. Keep the chain properly tensioned at all times.

WARNING: Alternative fuels, such as E-15 (15% ethanol), E-85 (85% ethanol) or any fuels not meeting shindaiwa requirements are not approved for use in shindaiwa gasoline engines. Use of alternative fuels may cause performance problems, loss of power, overheating, fuel vapor lock, and unintended machine operation, including, but not limited to, improper clutch engagement. Alternative fuels may also cause premature deterioration of fuel lines, gaskets, carburetors and other engine components.

IMPORTANT: Use of unmixed, improperly mixed, or fuel older than 90 days (stale fuel), may cause hard starting, poor performance, or severe engine damage and void the product warranty.

FUEL REQUIREMENTS

• Gasoline – Use 89 Octane [(R+M)/2] (mid grade or higher) gasoline known to be good quality. Gasoline may contain up to 10% Ethanol (grain alcohol) or 15% MTBE (methyl tertiary-butyl ether). Gasoline containing methanol (wood alcohol) is not approved.

• Two-Stroke Mixture Oil – A 2-stroke engine oil meeting ISO-L-EGD (ISO/CD 13738) and JASO M345-FD Standards must be used. shindaiwa Red Armor™ 2-Stroke Oil is strongly recommended. Engine problems due to inadequate lubrication caused by failure to use a certified oil will void the engine warranty.

Fuel to Oil Mix 50:1 Ratio

DANGER: Fuel is very flammable. Use extreme care when mixing, storing or handling, or serious personal injury may result.

• Use an approved fuel container.

• Do not smoke near fuel.

• Do not allow flames or sparks near fuel.

• Fuel tanks/cans may be under pressure. Always loosen fuel caps slowly allowing pressure to equalize.

• Never refuel a unit when the engine is hot or running!

• Do not fill fuel tanks indoors. Always fill fuel tanks outdoors over bare ground.

• Do not overfill fuel tank.

• Wipe up spills immediately.

• Securely tighten fuel tank cap and fuel container after refueling.

• Inspect for fuel leakage. If fuel leakage is found, do not start or operate unit until leakage is repaired.

• Move at least 3 m (10 feet) from refueling location before starting the engine.

Mixing Instructions:

1. Fill an approved fuel container with half of the required amount of gasoline.

2. Add the proper amount of engine oil to gasoline.

3. Close container and shake to mix oil with gasoline.

4. Add remaining gasoline, close fuel container, and remix.

IMPORTANT: Stored fuel ages. Do not mix more fuel than you expect to use in thirty (30) days, ninety (90) days when a fuel stabilizer is added. Stored two-stroke fuel may separate. Always shake fuel container thoroughly before each use.

After Use: Do not store a unit with fuel in its tank. Leaks can occur. Return unused fuel to an approved fuel storage container.

Storage: Fuel storage laws vary by locality. As a precaution, store fuel in an approved, airtight container. Store in a well-ventilated, unoccupied building, away from sparks and flames.

Proper lubrication of the chain while in operation reduces friction between the chain and the guide bar to a minimum and assures a longer service life.

• Use bar and chain oil of high quality for this purpose.

• Do not use used or reclaimed oil to avoid various oiler problems.

• Use high quality bar and chain oil.

• Use bar and chain oil of the following grades:

– SAE No. 30 in summer

– SAE No. 10 in winter or when cutting resinous trees

• When refueling, also refill chain oil.

The 50 or 300 hours emission compliance period is the time span selected by the manufacturer certifying the engine emissions output meets applicable emissions regulations, provided that approved maintenance procedures are followed as listed in the Maintenance Section of this manual.

CAUTION: Make sure the bar and chain are free from any obstruction when starting the chain saw.

1. Move chain brake lever fully forward to lock chain brake before starting.

2. Fill the fuel tank with fuel mixture. It is not permitted to fill fuel above the shoulder level of fuel tank.

3. Fill the chain oil tank with lubricant. Do not overfill.

4. Move the control (choke / ignition switch) lever forward to the “Cold Start” position.

5. Push purge pump 3 to 4 times or until fuel is visible in the purge pump.

6. Securely hold the chain saw as shown. Place the unit on a flat ground and hold the front handle with the left hand and hold firmly the rear end of the rear handle with your right knee. Pull the starter handle with your right hand several times until the first firing sound is heard.

7. Return the control lever to the “Warm Start” position as soon as engine starts to fire, when the first firing sound is heard.

8. Pull the starter handle to start the engine.

9. When engine starts, immediately squeeze and release the throttle trigger for disengaging the throttle latch and returning the engine to idle, and pull the front hand guard towards the operator immediately (Chain brake unlocked position).

CAUTION: Make sure the bar and chain are free from any obstruction when starting the chain saw.

1. Move chain brake lever fully forward to lock chain brake before starting.

2. Confirm there is fuel and chain oil in the tanks.

3. Move the control lever to the “Warm Start” position.

4. Securely hold the chain saw as shown and pull the starter handle.

5. Choke may be used if necessary, but after the first firing sound, pull the throttle trigger to release the choke.

6. After starting the engine, pull the front hand guard towards the operator immediately (Chain brake unlocked position).

RUNNING

• When engine starts, keep idling for a few minutes.

• Set the brake lever in the unlocked position before starting to cut.

• Pull the throttle trigger gradually and increase the revolution of the engine.

• The chain starts running when the engine reaches 4400 r/min approximately.

• Confirm proper acceleration and lubrication of chain and bar.

• Do not run the engine at high speed unnecessarily.

• Be sure that the saw chain stops moving when the throttle trigger is released.

STOPPING

• Release the throttle trigger and allow the engine to idle.

• Move the control lever to the “STOP” position.

NOTICE: If the engine does not stop, move the control lever to the “Cold Start” position to stop the engine. Return the unit to your authorized dealer to check and repair the stop switch before starting the engine again.

CHECKING CHAIN TENSION

Chain tension should be checked frequently during work and corrected as necessary.

• Tension the chain as tight as possible, but so it can still be pulled easily along the bar by hand.

CAUTION: Do not operate with a loose chain.

CHAIN LUBRICATION TEST

Hold the chain just above a dry surface and open the throttle to half speed for 30 seconds. A thin line of “thrown” oil should be seen on the dry surface.

CAUTION

• Read the “CHAIN SAW SAFETY MANUAL” included with your chain saw for additional cutting and safety instructions.

• Wear suitable hearing protection such as earmuffs or earplugs.

• Do not let the tip of the bar touch anything while the engine is running. At cutting speed the chain is moving at a high rate of speed. Should the tip contact a limb or log while the chain is moving, the tip will be pushed upward with considerable force. This is known as kickback. Avoid it!

In all circumstances the operation of the chain saw is a one-man job. After you have learned the basic techniques of using the saw, your best aid will be your own good common sense.

The accepted way to hold the saw is to stand to the left of the saw with your left hand on the front handlebar and your right hand on the rear handle so you can operate the throttle trigger with your right index finger.

Before attempting to fell a tree, cut some small logs or limbs. Become thoroughly familiar with the controls and the responses of the saw.

Start the engine and see that it is running properly. Squeeze the trigger to open the throttle wide open and start the cut. If the chain is properly sharpened, the cutting should be relatively effortless. It is not necessary to press down hard to make the saw cut. Pushing the saw too hard will slow the engine and cutting will actually be more difficult.

Some material may adversely affect the housings of your chain saw (Example: palm Tree Acid, fertilizer etc.). To avoid housing deterioration, carefully remove all packed sawdust around the clutch and guide bar area and wash with water. Coat metal parts with light oil.

A falling tree can seriously damage anything it may hit. There are ways to make a tree fall where you want it, so first decide where that is!

1. Before cutting, clear the area around the tree. You will need good footing while working and you should be able to work the saw without hitting any obstacles.

2. Next, select a path of retreat. When the tree begins to fall you should retreat away from the direction of fall at a 45-degree angle and at least 3 m (10 feet) from the trunk to avoid the trunk kicking back over the stump.

3. Begin the cut on the side to which the tree is to fall. Cut a notch about 1/3 of the way into the tree. The position of this notch is important since the tree will try to fall “into” the notch.

4. The felling cut is made on the side opposite the notch and at a level about 5 cm (2 in.) above the bottom of the notch. Do not try to cut through to the notch with the felling cut.

5. The remaining wood between the notch cut and felling cut (about 5 cm or 2 in.) will act as a hinge when the tree falls, guiding it in the desired direction.

6. When the tree starts to fall, kill the engine, place the saw on the ground and make your retreat quickly.

Felling Large Trees: To fell big trees with a diameter exceeding twice the bar length, start the notching cuts from one side and draw the saw through to the other side of the notch. Start the back cut on one side of the tree, pivoting the saw through to form the desired hinge on that side. Then remove the saw for the second cut. Insert the saw in the first cut, very carefully so as not to cause kickback. The final cut is made by drawing the saw forward in the cut to reach the hinge.

LIMBING

Limbing a fallen tree is much the same as bucking.

• Never stand on the tree that you are limbing.

• When limbing, caution is the word. Be careful of the tip touching other limbs.

• Always use both hands.

• Don’t cut with the saw overhead or aligned vertically with your body. If the saw should kick-back, you may not have enough control to prevent possible injury.

BUCKING

Bucking is the sawing of a log or fallen tree into smaller pieces. There are a few basic rules which apply to all bucking operations.

• Keep both hands on the handles at all times.

• Support logs if possible.

• When cutting on a slope or hillside, always stand uphill.

• Keep in mind that the wood is heavy and that it will bend and pinch the saw if improperly supported. The trunk will weaken at the point where you make the cut unless the tree is lying on perfectly flat ground or supported as shown.

• If you make the cut with the tree on the ground, don’t let the saw’s chain dig into the earth; it is harmful for the saw, and you stand a good chance of being struck by flying debris.

• To cut the trunk, use the bucking and two-cut sequence shown. The first cut should be no deeper than one-third the trunk diameter.

CHAIN BRAKE OPERATION

• Set the lever in the unlocked position before starting to cut.

• If the brake is tripped by kickback reaction, the chain will stop immediately. Release the throttle to avoid possible damage to the engine or clutch.

• Do not attempt to operate the engine with the brake locked.

• When the lever is pushed forward, the chain brake instantly stops the chain (Chain brake function).

• When the lever is fully pulled toward the operator, the brake is unlocked (Chain brake unlock).

TESTING THE BRAKE

WARNING: If the chain does not stop immediately, return the saw to your authorized dealer for repair.

1. Start the engine on a solid level surface and run at a fast idle until warm.

2. Hold the saw firmly by the handles and accelerate the engine to a fast idle.

3. Slowly operate the chain brake lever while holding the saw firmly on the ground. When the brake lever trips, the chain should stop. Immediately release the throttle trigger.

NOTICE

• For practice, while cutting a small tree, push the lever forward to lock the brake.

• Confirm that the brake works properly before each use.

• If the chain brake is clogged with wood chips, the function of the brake may deteriorate. Always keep the device clean.

• Do not increase engine revolution while the chain brake is locked.

• Use the chain brake only in starting or in emergencies.

• When using the throttle latch at starting, keep the chain brake locked. And after starting the engine, unlock the brake immediately.

IMPORTANT: Do not allow the saw to tip forward in order to avoid damage to the chain.

Kickback produced from the tip of the guide bar will trip the automatic chain brake. To make sure that the automatic chain brake operates properly, follow these steps:

1. Stop the engine.

2. Hold the saw with the guide bar approximately 55 cm (22 in.) above a wooden surface. The right hand should hold the rear handle, and the left hand should hold the front handle.

3. Release the front handle and drop the end of the guide bar against the wooden surface.

4. The impact should lock the chain brake.

IMPORTANT: When checking the operation of the automatic chain brake, use a soft surface substance like wood to provide the impact so the chain is not damaged.

GUIDE BAR (Low-kickback)

Replacement guide bars. The following guide bars may be considered to have equivalent kickback energy.

• Sprocket nose guide bars of the same length and nose radius, same pitch and having the same number of teeth.

• Hard nose guide bars of the same length and nose radius as a sprocket nose bar.

SAW CHAIN (Low-kickback)

CAUTION: Do not use a replacement saw chain unless it has been designated as meeting the ANSI B175.1 kickback performance requirements, when tested on the representative sample of chain saws below 3.8 c.i.d. specified in ANSI B175.1.

NOTICE: LOW KICKBACK SAW CHAIN meets the kickback performance requirements of ANSI B175.1 (safety requirements for gasoline-powered chain saws).

WARNING: Moving parts can amputate fingers or cause severe injuries. Always stop engine, disconnect spark plug, and make sure all moving parts have come to a complete stop before servicing. Allow unit to cool. Wear gloves.

IMPORTANT: Time intervals shown are maximum. Actual use and your experience will determine the frequency of required maintenance.

Maintenance Procedure Letter Codes: I = Inspect, C = Clean, R = Replace

Maintenance Procedure Notes:

(1)= Low evaporative fuel tanks DO NOT require regular maintenance to maintain emission integrity.

* = All recommendations to replace are based on the finding of damage or wear during inspection.

Every unit is run at the factory and the carburetor is set in compliance with Emission Regulations. In addition, the carburetor is equipped with “H” (High Speed) and “L” (Low Speed) needle adjustment limiters that prevent settings outside acceptable limits.

1. Before adjusting carburetor clean or replace air filter and muffler “Spark Arrestor Screen”.

2. Make sure the bar and chain are properly adjusted.

3. Start engine and run several minutes to bring to operating temperature. Flash choke twice during warm-up to clear any air from the fuel system.

4. Stop engine. Turn “H” speed needle counterclockwise (CCW) to stop. Turn “L” speed needle midway between full clockwise (CW) stop and CCW stop.

5. Idle Speed Adjustment: Start engine, turn “Idle” speed adjustment screw CW until the saw chain begins to turn, then turn screw out CCW until the saw chain stops turning. Turn screw out, CCW, an additional 1/2 turn.

WARNING: Cutting attachment must not move when unit is idling.

6. Accelerate to full throttle for 2-3 seconds to clear any excess fuel in the engine, then return to idle. Accelerate engine to full throttle to check for smooth transition from idle to high speed. If engine hesitates turn “L” needle CCW 1/8 turn and repeat acceleration. Continue adjustment until smooth acceleration results.

7. Check idle speed and reset if necessary as described in item 5. If a tachometer is available idle speed should be set to 2800 r/min.

CAUTION: When starting, idling adjustment speed should be adjusted not to rotate the saw chain. Correct idle speed is adjusted 2800 r/min. Or 1/2 turn CCW from the point the chain stops moving. When you experience trouble with the carburetor, contact your dealer.

This engine has been factory adjusted to maintain satisfactory starting, emission, and durability performance up to 1100 feet above sea level (ASL) (96.0 kPa).

To maintain proper engine operation and emission compliance above 1100 feet ASL the carburetor may need to be adjusted by an authorized service dealer.

IMPORTANT: If the engine is adjusted for operation above 1100 feet ASL, the carburetor must be readjusted when operating the engine below 1100 feet ASL, otherwise severe engine damage may result.

• Check before every use.

• Close choke.

• Turn cleaner cover knob counterclockwise by 90° and remove air cleaner cover and air filter.

• Brush off dust lightly, or clean with compressed air, or replace the air filter.

• Reinstall air filter and cover.

• Check before every use.

• After refueling, make sure fuel does not leak from around fuel pipe, fuel grommet or fuel tank cap.

• In case of fuel leakage there is a danger of fire. Stop using the machine immediately and request your dealer to inspect or replace.

• Check periodically.

• The standard spark gap is 0.65 mm (0.026 in.).

• Correct the spark gap if it is wider or narrower than the standard gap.

• Fastening torque: 15 to 17 N·m (130 to 145 in. lb.).

FUEL FILTER

• Check periodically.

• Do not allow dust to enter the fuel tank.

• A clogged filter will cause difficulty in starting the engine or abnormalities in engine performance.

• Pull the fuel filter out through the fuel inlet port with a piece of steel wire or the like.

• When the filter is dirty, replace it.

• When the inside of the fuel tank is dirty, rinsing the tank out with gasoline can clean it.

OIL FILTER

• Check periodically.

• Do not allow dust to enter into the oil tank.

• A clogged oil filter will affect the normal lubricating system.

• Pull it out through the oil filling hole with a piece of steel wire or the like.

• If the filter is dirty, wash it in gasoline or replace it.

• When the inside of the tank gets dirty, rinsing the tank out with gasoline can clean it.

• Clean before using.

– Clean the groove of the guide bar with a small screwdriver.

– Clean oil holes with a wire.

• Reverse guide bar periodically.

• Check sprocket and the clutch and clean the bar mount area before installation of the bar. Replace either or both if worn.

• A damaged sprocket will cause premature damage or wear of the saw chain.

– When the sprocket has worn out 0.5 mm (0.02 in.) or more, replace it.

• Check the sprocket when you install a new chain. Replace it if worn.

• Check periodically.

• Clogged fins will result in poor engine cooling.

• Remove dirt and dust from between fins to let cooling air pass easily.

• Remove air cleaner cover and remove spark plug lead.

• Remove spark arrestor screen cover and screen from muffler body.

• Clean carbon deposits from muffler components.

• Replace screen if it is cracked, or has holes burned through.

• Assemble components in reverse order.

NOTICE: Carbon deposits in the muffler will cause a drop in engine output. The spark arrestor screen must be checked periodically.

• The discharge volume of the automatic oiler is adjusted to 7 mL/min approximately at 7000 r/min, prior to shipment from the factory.

– To increase the delivery volume, turn the adjusting screw counterclockwise.

– When the screw touches the stopper and stops, this position indicates maximum discharge volume (13 mL/min at 7000 r/min).

• Do not turn the adjusting screw beyond the maximum or minimum limit of volume adjustment.

Important points for proper maintenance of saw chain:

• Keep the cutters sharp at all times.

• Keep the left and the right cutters properly aligned. Note that blunt or irregular cutters will result in poor cutting performance, increased vibration of chains and premature breakage of the saw chain.

• Drive link serves to remove sawdust from the groove of the guide bar. Keep the lower edge of the drive link sharp where indicated.

SETTING SAW CHAIN

• For setting saw chain, a round file 4.0 mm (5/32 in.) diameter and a flat file are used.

• To keep correct position and correct angle, use the file holder (Sure Sharp®).

• Push the file as shown, keeping a 30° angle. Hold the file horizontally (90°).

• One fifth (1/5) of the file diameter should remain above the cutter edge.

• Depth Gauge: Place the depth gauge tool firmly on the guide bar so that the depth gauge protrudes. Then file the top of the depth gauge with the flat file until it is flat with the top of the depth gauge tool. Be sure to round off the front edge of the depth gauge.

• Properly filed cutters have a top plate filing angle of 30° and a top plate cutting angle of 55°. The depth gauge should be 0.65 mm (0.025 in.) and parallel.

When setting of the chain is finished, soak it in oil and wash away filings completely before using. If the chain saw is operated with filings clogged in the groove, the saw chain and the guide bar will be damaged prematurely. If the saw chain becomes soiled with resin, clean it with kerosene and soak it in oil.

NOTICE: These angles are referred to as Oregon S91PXL. To sharpen other chains, follow the chain manufacturer’s instruction.

WARNING: Fuel vapors are extremely flammable and may cause fire and/or explosion. Never test for ignition spark by grounding the spark plug near the cylinder plug hole, otherwise serious personal injury may result.

• Inspect and adjust every part of the chain saw.

– Completely clean every part and repair if necessary.

– Apply a thin coating of oil on metal parts to prevent rust.

• Remove chain and guide bar.

• Drain the fuel tank, pull the starter slowly a few times to drain fuel from the carburetor.

• Pour a small amount of clean motor oil into the spark plug hole, pull the starter and crank the engine until the piston reaches: TOP DEAD CENTER.

• Store in a dry area, free from dust.

WARNING: Do not store in an enclosure where fuel fumes may accumulate or reach an open flame or spark.

CAUTION: Do not lend or rent your chain saw without the Instruction manual and Safety manual.

* Technical data subject to change without notice.