Makita EBH250U, Instruction Manual

Page 1: ... EBH251L INSTRUCTION MANUAL Important Read this instruction manual carefully before putting the Brush Cutter Grass Trimmer into operation and strictly observe the safety regulations Preserve instruction manual carefully EBH250U EBH251U EBH250L EBH251L ...

Page 2: ...unting of cutter blade or nylon cutting head 11 Before start of operation 12 Correct handling of machine 14 Points in operation and how to stop 14 Resharpening the cutting tool 16 Servicing instructions 18 Storage 21 Take Particular care and Attention Read instruction Manual Forbidden No Smoking No open flame Protective gloves must be worn Keep the area of operation clear of all persons and pets W...

Page 3: ... entangled with bushes or shrubs In order to avoid either head eye hand or foot injuries as well as to protect your hearing the following protective equipment and protective clothing must be used during operation of the Brush Cutter Grass trimmer Always wear a helmet where there is a risk of falling objects The protective helmet 1 is to be checked at regular intervals for damage and is to be repla...

Page 4: ... without this guard All protective installations and guards supplied with the machine must be used during operation Never operate the engine with faulty exhaust muffler Shut off the engine during transport During transport over long distances the tool protection included with the equipment must always be used Ensure safe position of the Brush Cutter Grass trimmer during car transporta tion to avoi...

Page 5: ...backs observe the following Operation within a blade segment between 12 and 2 o clock presents positive hazards especially when using metal cutting tools 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 experi enced operators and then only at their own risk Easy cutting with almost no kickback is possible within a...

Page 6: ...ies Your name Packaging The MAKITA Brush cutter Grass trimmer will be delivered in two protective cardboard boxes to prevent transport damage Cardboard is a basic raw material and is therefore consequently reusable or suitable for recycling waste paper recycling Observe the relevant accident prevention instructions issued by the relevant trade associations and by the insurance companies Do not per...

Page 7: ... Maximum spindle speed corresponding min 1 6500 Maximum fuel consumption kg h 0 33 Maximum specific fuel consumption g kwh 408 Idling speed min 1 3000 Carburetor type WALBRO WYL Ignition system type Solid state ignition Spark plug type NGK CMR4A Electrode gap mm 0 7 0 8 Right handle Rear grip m s2 4 6 4 2 Vibration per ISO 228671 Left handle Front grip m s2 4 5 4 0 Sound pressure level average to ...

Page 8: ...ank 2 Rewind Starter 3 Air Cleaner 4 I O Switch on off 5 Spark Plug 6 Exhaust Muffler 7 Clutch Case 8 Rear Grip 9 Hanger 10 Handle 11 Control Lever 12 Control Cable 13 Shaft 14 Protector 15 Gear Case Head Case 16 Handle Holder 17 Cutter Blade 18 Nylon Cutting Head 20 Fuel Filler Cap 21 Starter Knob 24 Exhaust Pipe 25 Oil Gauge ...

Page 9: ...ndle After the handle bar is in place tighten the four bolts M5 x 25 NOTE Be sue the bolts are tight but do not overtighten Fit the control cable together with the earth cord to the handle with two clips 3 Avoid any tendency of the control cable to loop at the handle bar For machines with Loop Handle Fix a barrier to the left side of the machine together with the handle for operator s protection D...

Page 10: ...equipment without the guard being in place is not permitted The outside diameter of the cutter blade must be 230mm 9 1 16 Never use any blades surpassing 230mm 9 1 16 in outside diameter Use of protector for metal blade cord cutter In use of the metal blade fasten the protector 4 to the clamp 3 with two bolts M6 x 30 2 NOTE Tighten the right and left bolts evenly so that the gap between the clamp ...

Page 11: ...e nut 1 Tightening torque 13 23 N m NOTE Always wear gloves when handling the cutter blade NOTE The cutter blade fastening nut with spring washer is a consumable part If there appears any wear or deformation on the spring washer replace the nut Mounting of nylon cutting head To install the nylon cutting head 7 remove the tightening nut 8 Insert the socket head wrench 11 through the hole in the gea...

Page 12: ... oil of API Classification Class SF or higher 4 stroke engine for automobile Oil volume Approx 0 08L Point 1 in Replacement of Oil Oil Gauge Remove dust or dirt near the oil refill port and detach the oil gauge Keep the detached oil gauge free of sand or dust Otherwise any sand or dust adhering to the oil gauge may cause irregular oil circulation or wear on the engine parts which will result in tr...

Page 13: ...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 Refueling WARNING INFLAMMABLES STRICTLY PROHIBITED Gasoline used Automobile gasoline unleaded gasoline 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 tiltin...

Page 14: ... by pulling strongly with a finger The machine sill detach from body Be extremely careful to maintain control of the machine at this time Do not allow the machine to be deflected toward you or anyone in the work vicinity WARNING Failure to maintain complete control of the machine at all could result in serious bodily injury or DEATH POINTS IN OPERATION AND HOW TO STOP Observe the applicable accide...

Page 15: ... point 5 Choke lever When the engine starts open the choke lever Open the choke lever progressively while checking the engine operation Be sure to open the choke lever to the full in the end In cold or when the engine is cooled down never open the choke lever suddenly Otherwise the engine may stop 6 Warm up operation Continue warm up operation for 2 to 3 minutes Note If the starter handle is pulle...

Page 16: ...tation to 3000min 1 If it is necessary to change the rotation speed regulate the adjusting screw illustrated on the left with Phillips screwdriver Turn the adjusting screw to the right and the engine rotation will increase Turn the adjusting screw to the left and the engine rotation will drop The carburetor is generally adjusted before shipment If it is necessary to readjust it please contact Auth...

Page 17: ...inst the ground to feed out the nylon cord 3 If the nylon cord does not feed out with procedure 2 rewind replace the nylon cord by following the procedures described under Replacing the nylon cord Replacing the nylon cord First 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 ...

Page 18: ...e doing any work on the Brush cutter Grass trimmer always stop the engine and pull the plug cap off the spark plug see checking the spark plug Always wear protective gloves To ensure a long service life and to avoid any damage to the equipment the following servicing operations should be performed at regular intervals Daily checkup and maintenance Before operation check the machine for loose screw...

Page 19: ...BLES STRICTLY PROHIBITED Interval of Cleaning and Inspection Daily every 10 operating hours 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 1 Remove the element sponge immerse it...

Page 20: ...ON OF BOLTS NUTS AND SCREWS Retighten loose bolts nuts etc Check for fuel and oil leakage Replace damaged parts with new ones for safety operation CLEANING OF PARTS Keep the engine always clean Keep the cylinder fins free of dust or dirt Dust or dirt adhering to the fins will cause seizure Fuel pipe House clamp Fuel filter 1 Fuel pipe 0 7mm 0 8mm 0 028 0 032 CHECKING THE SPARK PLUG Only use the su...

Page 21: ...e machine with the cutter blade edge oriented downward Lubricating oil may spill out Keep the drained fuel in a special container in a well ventilated shade Attention after long time storage Before startup after long time shutdown be sure to replace oil refer to P 18 Oil will deteriorate while the machine is kept out of operation Drain fuel Humidity Fault System Observation Cause Engine not starti...

Page 22: ...tion Inspect adjust 16 Air cleaner Clean 19 Ignition plug Inspect 20 Cooling air duct Clean inspect 20 Inspect 20 Fuel pipe Replace 2 Gear case grease Refill 20 Fuel filter Clean replace 20 Clearance between air intake valve and air discharge valve Adjust 2 Engine overhaul 2 Carburetor Drain fuel 3 21 1 Perform initial replacement after 20h operation 2 For the 200 operating hour inspection request...

Page 23: ...mal carburetor Make request for inspection and maintenance Starter rope cannot be pulled Make request for inspection and maintenance Engine does not start Abnormal drive system Make request for inspection and maintenance Insufficient warm up Perform warm up operation Choke lever is set to CLOSE although engine is warmed up Set to OPEN Clogged fuel filter Clean Contaminated or clogged air cleaner C...

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