FREE ENGLISH MAKITA EBH252U (01) PDF USER GUIDE
FREE ENGLISH MAKITA EBH252U (01) PDF USER MANUAL
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FREE ENGLISH MAKITA EBH252U (01) PDF OWNER MANUAL
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FREE ENGLISH MAKITA EBH252U (01) PDF REFERENCE MANUAL
FREE ENGLISH MAKITA EBH252U (01) PDF INSTRUCTION MANUAL
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MAKITA EBH252U (01) PDF SUMMARY:
What safety precautions should I take when operating the Petrol Brushcutter?
Read the instruction manual and follow the warnings and safety precautions. Wear protective gloves, a helmet, eye and ear protection, sturdy boots with nonslip soles, and work overalls. Keep the area of operation clear of all persons and pets.
What should I do before starting the Petrol Brushcutter?
Make sure there are no children or other people within a working range of 15 meters (50 ft), and pay attention to any animals in the working vicinity. Check that the Petrol Brushcutter is safe for operation, including the security of the cutting tool and the proper functioning of the control lever and its lock. Ensure the handles are clean and dry, and test the start/stop switch. Also, make sure that the cutting tool has no contact with hard objects.
What should I do if the cutting tool hits stones or other hard objects?
Immediately switch off the engine and inspect the cutting tool. Inspect the cutting tool at short regular intervals for damage.
How should I hold the Petrol Brushcutter during operation?
Always hold the Petrol Brushcutter with both hands and ensure a safe footing.
What should I do when resting or leaving the Petrol Brushcutter unattended?
Switch off the engine and place it in a safe location to prevent danger to others or damage to the machine.
What should I do before refueling?
Shut off the engine, keep away from open flames, and do not smoke. Wear protective gloves during refuelling and avoid skin contact with mineral oil products and inhalation of fuel vapor.
What type of fuel should I use?
Use automobile gasoline (unleaded gasoline).
What should I do if fuel spills?
Take care not to spill either fuel or oil in order to prevent soil contamination. Clean the Petrol Brushcutter immediately after fuel has been spilt. Change clothing instantly if fuel has been spilt on it.
What should I check regularly on the fuel cap?
Inspect the fuel cap at regular intervals making sure that it can be securely fastened and does not leak.
Where should I start the engine after refueling?
Change location to start the engine, ensuring you are at least 3 meters away from the place of refuelling.
What should I do during the winter season?
Beware of slippery or wet areas, ice, and snow (risk of slipping), and always ensure a safe footing.
What is kickback and how can I avoid it?
When operating the Petrol Brushcutter, uncontrolled kickback may occur, particularly when attempting to cut within a blade segment between 12 and 2 o’clock. Never apply the Petrol Brushcutter within this segment or apply this segment of the Petrol Brushcutter blade to solids, such as bushes and trees, etc., having a diameter in excess of 3 cm. Cutting operations within a blade segment between 11 and 12 o’clock, and between 2 and 5 o’clock, must only be performed by trained and experienced operators, and then only at their own risk.
What should I check before commencing work?
The condition of the cutter, in particular of the cutting tool of the protective devices and also of the shoulder strap must be checked before commencing work. Particular attention is to be paid to the cutting blades which must be correctly sharpened.
What should I do when replacing or sharpening cutting tools?
Turn off the engine and remove spark plug connector when replacing or sharpening cutting tools, and also when cleaning the cutter or cutting tool.
What should I do to operate the Petrol Brushcutter with as little noise and contamination as possible?
Check the correct setting of the carburetor.
Where should I store the Petrol Brushcutter?
Always store the Petrol Brushcutter in locked rooms and with an emptied fuel tank.
What kind of modifications should I avoid on the Petrol Brushcutter?
Do not perform any modifications on the Petrol Brushcutter as this will endanger your safety.
What should I do in case of an accident?
Make sure that a first-aid box is available in the vicinity of the cutting operations. Immediately replace any item taken from the first aid box.
What information should I give when asking for help in case of an accident?
Give the place of accident, what happened, number of injured persons, kind of injuries, and your name.
How do I mount the handle for machines with bike handles?
Loosen the knob, place the handle between the handle clamp and handle holder, adjust the handle to a comfortable working position, and secure it by hand-tightening the knob. Make sure to mount the spring.
How do I mount the handle for machines with loop handles?
Fix a barrier to the left side of the machine together with the handle for operator protection. Keep not less than 250 mm distance between the handle and the grip.
What should I do if the cutter blade hits against a stone during operation?
Stop the engine and check the blade immediately.
How often should I polish or replace the cutter blade?
Polish or replace the cutter blade every three hours of operation.
What should I do if the nylon cutting head hits against a stone during operation?
Stop the engine and check the nylon cutting head immediately.
What is the appropriate outside diameter of the cutter blade?
The outside diameter of the cutter blade must be 230 mm (9-1/16”). Never use any blades surpassing 230 mm (9-1/16”) in outside diameter.
How do I mount the protector when using a metal blade?
Fix the protector to the clamp with two bolts M6 x 30. Tighten the right and left bolts evenly so that the gap between the clamp and the protector will be constant.
How do I mount the nylon cord cutter protector?
Mount the nylon cord cutter protector onto the metal blade protector by holding down its central notch while sliding it into place from the flank of the metal blade protector. Be sure to push it in until it is fully inserted, and take care not to injure yourself on the cutter for cutting the nylon cord.
How do I mount the cutter blade or nylon cutting head?
Turn the machine upside down. Insert the hex wrench through the hole in the gear case and rotate the receiver washer until it is locked with the hex wrench.
How do I mount the cutter blade with the hex wrench still in place?
Mount the cutter blade onto the shaft so that the guide of the receiver washer fits in the arbor hole in the cutter blade. Install the clamp washer, cup, and secure the cutter blade with the nut. Tightening torque: 13 – 23 N-m. Always wear gloves when handling the cutter blade.
How do I mount the nylon cutting head?
The clamp washer, cup, and nut are not necessary for mounting the nylon cutting head. The nylon cutting head should go on top of the receiver washer. Insert the hex wrench through the hole in the gear case and rotate the receiver washer until it is locked with the hex wrench. Then screw the nylon cutting head onto the shaft by turning it counter-clockwise.
How do I inspect and refill engine oil?
Perform the following procedure with the engine cooled down. Keep the engine level, remove the oil gauge, and confirm that the oil is filled within the upper and lower limit marks. If the oil is in short, refill new oil near the port. Recommended oil: SAE 10W-30 oil of API Classification, Class SF or higher (4-stroke engine for automobile). Oil volume: Approx. 0.08L.
How often should I refill engine oil?
For reference, the oil refill time is about 10 hours. If the oil changes in color or mixes with dirt, replace it with new one.
What precautions should I take when handling fuel?
It is necessary to handle fuel with utmost care. Fuel may contain substances similar to solvents. Refueling must be performed in a sufficiently ventilated room or in the open air. Never inhale fuel vapor, and keep fuel away from you. If you touch fuel repeatedly or for a long time, the skin becomes dry, which may cause skin disease or allergy.
What should I do if fuel enters my eye?
Clean the eye with fresh water. If your eye remains still irritated, consult your doctor.
How long can I store fuel?
Fuel should be used up within a period of 4 weeks, even if it is kept in a special container in a well-ventilated shade. If a special container is not used or if the container is not covered, fuel may deteriorate in one day.
How do I refuel the Petrol Brushcutter?
Loosen the tank cap a little so that there will be no difference in atmospheric pressure. Detach the tank cap, and refuel, discharging air by tilting the fuel tank so that the refuel port will be oriented upward. Never refill fuel full to the oil refill port. Wipe well the periphery of the tank cap to prevent foreign matter from entering into the fuel tank. After refueling, securely tighten the tank cap.
What should I do if oil spills out between the fuel tank and engine main unit?
The oil is sucked into through the cooling air intake port, which will contaminate the engine. Be sure to wipe out spilt oil before start of operation.
Where should I store the machine and refill tank?
Keep the machine and tank at a cool place free from direct sunshine. Never keep the fuel in the cabin or trunk.
What should I keep in mind regarding fuel?
Never use a gasoline mixture which contains engine oil. Use of deteriorated oil will cause irregular startup.
How do I attach the shoulder strap?
Adjust the strap length so that the cutter blade will be kept parallel with the ground.
How do I start the Petrol Brushcutter?
Move at least 3 m away from the place of refuelling. Place the Petrol Brushcutter on a clean piece of ground taking care that the cutting tool does not come into contact with the ground or any other objects.
How do I perform a cold start?
- Set the machine on a flat space.
- Set the I-O switch to OPERATION.
- Close the choke lever.
- Continue to push the primer pump until fuel enters into the primer pump (7 to 10 pushes).
- Pull the start knob gently until it is hard to pull (compression point). Then, return the start knob, and pull it strongly. Never pull the rope to the full.
- When the engine starts, open the choke lever.
- Continue warm-up operation for 2 to 3 minutes.
What should I do if the starter handle is pulled repeatedly when the choke lever remains at “CLOSE” position?
The engine will not start easily due to excessive fuel intake. In case of excessive fuel intake, remove the spark plug and pull the starter handle slowly to remove excess fuel. Also, dry the electrode section of the spark plug.
How do I perform a startup after warm-up operation?
- Push the primer pump repeatedly.
- Keep the throttle lever at the idling position.
- Pull the recoil starter strongly.
- If it is difficult to start the engine, open the throttle by about 1/3.
How do I stop the Petrol Brushcutter?
Release the throttle lever fully, and when the engine rpm has lowered, set the I-O switch to STOP. Be aware that the cutting head may not stop immediately and allow it to slow down fully.
How do I adjust the low-speed rotation (idling)?
Adjust it by the carburetor adjusting screw. Set the low-speed rotation to 3,000 min-1. If it is necessary to change the rotation speed, regulate the adjusting screw with a Phillips screwdriver.
How do I resharpen the cutting tool?
The cutting tools must only be resharpened by an authorized facility. Manual resharpening will result in imbalances of the cutting tool causing vibrations and damage to the equipment.
What is the nylon cutting head?
The nylon cutting head is a dual string trimmer head capable of both automatic and bump & feed mechanisms.
How does the nylon cutting head work?
The nylon cutting head will automatically feed out the proper length of nylon cord by the changes in centrifugal force caused by increasing or decreasing rpms. To cut soft grass more efficiently, bump the nylon cutting head against the ground to feed out extra cord.
How do I operate the nylon cutting head?
Increase the nylon cutting head speed to approximately 6,000 min-1. Low speed (under 4,800 min-1) is not suitable, the nylon cord will not feed out properly at low speed.
What should I do if the nylon cord does not feed out automatically?
- Release the throttle lever to run the engine idle and then squeeze the throttle lever fully. Repeat this procedure until the nylon cord feeds out to the proper length.
- If the nylon cord is too short to feed out automatically with the above procedure, bump the knob of the nylon cutting head against the ground to feed out the nylon cord.
- If the nylon cord does not feed out with procedure 2, rewind/replace the nylon cord.
How do I replace the nylon cord?
- Stop the engine.
- Press on the housing latches inward to lift off the cover, then remove the spool.
- Hook the center of new nylon cord into the notch in the center of the spool, with one end of the cord extending about 80 mm (3-1/8”) more than the other. Then wind both ends firmly around the spool in the direction of the head rotation (left-hand direction indicated by LH and right-hand direction by RH on the side of the spool).
- Wind all but about 100 mm (3-15/16”) of the cords, leaving the ends temporarily hooked through a notch on the side of the spool.
- Mount the spool in the housing so that the grooves and protrusions on the spool match up with those in the housing. Keep the side with letters on the spool visible on the top. Now, unhook the ends of the cord from their temporary position and feed the cords through the eyelets to come out of the housing.
- Align the protrusion on the underside of the cover with the slots of the eyelets. Then push cover firmly onto the housing to secure it.
How often should I replace the engine oil?
Initially, every 20 operating hours, and subsequently every 50 operating hours.
What type of oil should I use for engine oil replacement?
SAE10W-30 oil of API Classification SF Class or higher (4-stroke engine oil for automobile).
What precautions should I take when replacing the engine oil?
Confirm that the engine main unit and engine oil are sufficiently cooled down. Otherwise, there may remain a risk of scald.
What should I do if the oil is filled above the limit?
It may be contaminated or may catch fire with white smoke.
What daily checkup and maintenance should I perform?
- Before operation, check the machine for loose screws or missing parts, paying particular attention to the tightness of the cutter blade or nylon cutting head.
- Before operation, always check for clogging of the cooling air passage and the cylinder fins. Clean them if necessary.
- Clean the Petrol Brushcutter externally and inspect for damage.
- Clean the air filter.
- Check the blade or the nylon cutting head for damage and make sure it is firmly mounted.
- Check that there is sufficient difference between idling and engagement speed to ensure that the cutting tool is at a standstill while the engine is idling.
- Check the functioning of the I-O switch, the lock-off lever, the control lever, and the look button.
How do I clean the air cleaner?
- Turn the choke lever to the full close side, and keep the carburetor off from dust or dirt.
- Remove the air cleaner cover-fixing bolts.
- Pull the cover lower side and detach the air cleaner cover.
- If oil adheres to the element (sponge), squeeze it firmly.
- For heavy contamination:
- Remove the element (sponge), immerse it in warm water or in water-diluted neutral detergent, and dry it completely.
- Clean the element (felt) with gasoline and dry it completely.
- Before attaching the element, be sure to dry it completely.
- Wipe out with waste cloth, oil adhering around the air cleaner cover and plate breather.
- Immediately after cleaning is finished, attach the cleaner cover and tighten it with fixing bolts.
How often should I clean the air cleaner?
Daily (every 10 operating hours). Clean the element several times a day if excessive dust adheres to it.
What should I do with replaced engine oil?
Never discard replaced engine oil in garbage, earth, or sewage ditch. Disposal of oil is regulated by law, so always follow the relevant laws and regulations.
How do I replace engine oil?
- Confirm that the tank cap is tightened securely.
- Detach the oil gauge, keeping it free from dust or dirt.
- Place waste or paper near the oil refill port.
- Detach the oil gauge and drain oil, tilting the main unit toward the oil refill port. Drain oil in a container for orderly disposal.
- Keep the engine level, and feed new oil up to the edge of the oil refill port. Use a lubricant refill container.
- After refill, securely tighten the oil gauge.
How often should I clean the fuel filter?
Monthly (every 50 operating hours).
How do I clean the fuel filter?
Open the tank cap, use a wire hook and pull out the suction head through the tank opening. Replace filters found to have hardened, been polluted, or clogged up. Replace the fuel filter at least quarterly.
How often should I replace the fuel pipe?
Annually (every 200 operating hours). Replace the fuel pipe every year, regardless of operating frequency. If any leakage is detected during inspection, replace the oil pipe immediately.
What should I check regarding bolts, nuts, and screws?
Retighten loose bolts, nuts, etc. Check for fuel and oil leakage. Replace damaged parts with new ones for safety operation.
How should I maintain the engine?
Keep the engine always clean. Keep the cylinder fins free of dust or dirt.
How do I check the spark plug?
Use the supplied universal wrench to remove or install the spark plug. The gap between the two electrodes of the spark plug should be 0.7 – 0.8 mm (0.028” – 0.032”). Adjust it if the gap is too wide or too narrow. If the spark plug is clogged or contaminated, clean it thoroughly or replace it.
What should I do when reassembling after the engine is dismounted?
Be sure to replace the gaskets and packings with new ones.
How often should I supply grease to the gear case?
Every 30 hours.
What type of grease should I use?
Supply grease (Shell Alvania 2 or equivalent) to the gear case through the grease hole.
What should I do when draining the fuel?
Be sure to stop the engine and confirm that the engine cools down.
What should I do when the machine is kept out of operation for a long time?
Drain up all fuel from the fuel tank and carburetor, and keep it at a dry and clean place.
How do I drain fuel from the fuel tank and carburetor?
- Remove the fuel tank cap, and drain fuel completely.
- Pull out the fuel filter from the refill port using a wire.
- Push the primer pump until fuel is drained from there, and drain fuel coming into the fuel tank.
- Reset the filter to the fuel tank, and securely tighten the fuel tank cap.
- Then, continue to operate the engine until it stops.
What should I do after draining the fuel?
Remove the spark plug, and drip several drops of engine oil through the spark plug hole. Gently pull the starter handle so that engine oil will spread over the engine, and attach the spark plug. Attach the cover to the cutter blade. During storage, keep the rod horizontal or keep the machine upright with the blade edge oriented upward. Keep the drained fuel in a special container in a well-ventilated shade.
What should I do before startup after long-time shutdown?
Be sure to replace oil.
What are some possible causes if the engine is not starting or starting with difficulty?
- Fault in fuel supply or compression system, mechanical defect
- STOP-switch operated, wiring fault or short circuit, spark plug or connector defective, ignition module faulty
- Incorrect choke position, carburetor defective, fuel supply line bent or blocked, fuel dirty
- Cylinder bottom gasket defective, crankshaft seals damaged, cylinder or piston rings defective or improper sealing of spark plug
- Broken starter spring, broken parts inside of the engine
What are some possible causes if the engine starts but dies?
- Incorrect idling adjustment, carburetor contaminated
- Fuel tank vent defective, fuel supply line interrupted, cable or STOP-switch faulty
What are some possible causes if the engine is idling poorly?
- Air filter contaminated, carburetor contaminated, muffler clogged, exhaust duct in the cylinder clogged
What should I check before making a request for repairs?
Check a trouble for yourself. If any abnormality is found, control your machine according to the description of this manual.
What should I do if the engine does not start after warm-up operation?
If there is no abnormality found for the check items, open the throttle by about 1/3 and start the engine.
What do I do if I fail to operate the primer pump?
Push 7 to 10 times.
What do I do if there is low pulling speed of the starter rope?
Pull strongly.
What do I do if there is a lack of fuel?
Feed fuel.
What do I do if the fuel filter is clogged?
Clean it.
What do I do if the fuel tube is broken?
Straighten fuel tube.
What do I do if the fuel is deteriorated?
Replace with new one.
What do I do if there is excessive suction of fuel?
Set throttle lever from medium speed to high speed, and pull starter handle until engine starts.
What do I do if the plug cap is detached?
Attach securely.
What do I do if the spark plug is contaminated?
Clean.
What do I do if there is abnormal clearance of spark plug?
Adjust clearance.
What do I do if there is other abnormality of spark plug?
Replace.
What do I do if there is an abnormal carburetor?
Make request for inspection and maintenance.
What do I do if the starter rope cannot be pulled?
Make request for inspection and maintenance.
What do I do if there is an abnormal drive system?
Make request for inspection and maintenance.
What do I do if there is insufficient warm-up?
Perform warm-up operation.
What do I do if the choke lever is set to “CLOSE” although engine is warmed up?
Set to “OPEN”.
What do I do if the cutter blade does not rotate?
- Tighten securely if the cutter blade-tightening nut is loosened.
- Remove foreign matter if twigs are caught by the cutter blade or dispersion-preventing cover.
- Make request for inspection and maintenance if there is an abnormal drive system.
What do I do if the main unit vibrates abnormally?
- Replace cutter blade if it is broken, bent or worn.
- Tighten securely if the cutter blade-tightening nut is loosened.
- Attach securely if there is shifted convex part of cutter blade and cutter blade support fitting.
- Make request for inspection and maintenance if there is an abnormal drive system.
What do I do if the cutter blade does not stop immediately?
- Adjust if there is high idling rotation.
- Attach securely if the throttle wire is detached.
- Make request for inspection and maintenance if there is an abnormal drive system.
What do I do if the engine does not stop?
- Attach securely if the connector is detached.
- Make request for inspection and maintenance if there is an abnormal electric system.
- Stop engine immediately.
Table of Operating Time and Maintenance Items
| Operating time | Item | Inspect/clean | Replace *1 | Tighten parts (bolt, nut) | Fuel tank | Throttle lever | Stop switch | Cutting blade | Low-speed rotation | Air cleaner | Ignition plug | Cooling air duct | Fuel pipe | Gear-case grease | Fuel filter | Clearance between air intake valve and air discharge valve | Engine overhaul | Carburetor |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Before operation | Engine oil | ✓ | ✓ | |||||||||||||||
| After lubrication | ✓ | |||||||||||||||||
| Daily (10h) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ | ||||||||||
| 30h | ✓ | |||||||||||||||||
| 50h | ✓ | ✓ | ✓ | |||||||||||||||
| 200h | ✓ | ✓ | ✓ | ✓ | ||||||||||||||
| Shutdown/rest | ✓ | ✓ | ||||||||||||||||
| Corresponding P (refer to source manual for page numbers) | 13 | 19 | 21 | — | — | 17 | 11 | 17 | 20 | 21 | 21 | 21 | 21 | 21 | — | — | 22 |
What does the Emissions Compliance Period on the Emissions Compliance label indicate?
For handheld engines, it indicates the number of operating hours for which the engine has been shown to meet Federal emission requirements. Category C=50 hours, B=125 hours, and A=300 hours.
What is the Air Index?
An Air Index Information hang tag was supplied to this engine in accordance with the emission regulations of the California Air Resources Board. The bar graph on the hang tag shows the emissions performance of this engine and can be used to compare the emissions performance with other available engines. The lower the Air Index, the less pollution.
What is the warranty coverage for the emissions control system?
This emissions control system is warranted for two years. If any emissions-related part on your equipment is defective, the part will be repaired or replaced by Makita USA, Inc.
What are the owner’s warranty responsibilities?
- You are responsible for performance of the required maintenance listed in your owner’s manual.
- Makita USA, Inc recommends that you retain all receipts covering maintenance on your small off-road engine, but Makita USA, Inc cannot deny warranty solely for the lack of receipts or your failure to ensure the performance of all scheduled maintenance.
- Makita USA, Inc may deny you warranty coverage if your small off-road engine or a part has failed due to abuse, neglect, or improper maintenance or unapproved modifications.
- You are responsible for presenting your small off-road engine to a Makita Factory Service Center as soon as the problem exists.
What parts are covered by the Emission Component Defect Warranty?
- Fuel Metering System
- Carburetor and internal parts
- Fuel Filter
- Throttle stopper, if applicable
- Choke System, if applicable
- Fuel Tank
- Air Induction System
- Air cleaner plate (including choke system)
- Air cleaner cover
- Air cleaner element
- Ignition System
- Spark Plugs
- Flywheel Magneto
- Ignition Coil
- Magneto or electronic ignition system
- Spark advance/retard system
- Miscellaneous Items Used in Above Systems
- Hoses, Sealing gaskets, belts, connectors, and assemblies
- Fuel hoses, clamps and sealing gaskets
What is not covered under warranty?
- Conditions resulting from tampering, misuse, improper adjustment, alteration, accident, failure to use the recommended fuel and oil, or not performing required maintenance services.
- The replacement parts used for required maintenance services.
- Consequential damages such as loss of time, inconvenience, loss of use of the engine of equipment, etc.
- Diagnosis and inspection charges that do not result in warranty-eligible service being performed.
- Any non-authorized replacement part, or malfunction of authorized parts due to use of non-authorized parts.
What are the maintenance procedures and intervals for emission-related parts?
- Clean engine and check bolts and nuts. Retighten if necessary: Every 8 hours (daily)
- Check and refill engine oil (4 stroke engine only): Every 8 hours (refill daily up to upper limit)
- Change engine oil (4 stroke engine only): Initial 20 hours and every 50 hours afterward
- Check clogging of cooling air passage and cylinder fins. Remove and clean if necessary: Every 8 hours (daily)
- Clean air cleaner: Every 8 hours (daily)
- Check spark plug. Clean and adjust if necessary: Every 8 hours (daily)
- Check muffler exhaust outlet (or port). Clean if necessary: Every 50 hours (monthly)
- Check fuel filter. If clogged, replace with new one: Every 50 hours (monthly)
- Adjust valve clearance, if applicable (4 stroke engine only): Every 200 hours (yearly)
- Replace fuel lines: Every 200 hours (yearly)
- Clean and inspect the complete engine. Replace any damaged or worn out parts: Every 200 hours
- Replace packings and gaskets with new ones: Every reassembling
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