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19

REPLACEMENT OF ENGINE OIL 

Deteriorated engine oil will shorten the life of the sliding and rotating parts to a great extent. Be sure to check the period and quantity of 
replacement.

ATTENTION:  In general, the engine main unit and engine oil still remain hot just after the engine is stopped. In replacement of oil, 

confirm  that  the  engine  main  unit  and  engine  oil  are  sufficiently  cooled  down.  Otherwise,  there  may  remain  a  risk  of  

scald.

Note:  If  the  oil  filled  above  the  limit,  it  may  be  contaminated  or  may  catch  fire  with  white  smoke.

Interval of replacement:

  Initially, every 20 operating hours, and subsequently every 50 operating hours

Recommended oil:

    

SAE10W-­30  oil  of  API  Classification  SF  Class  or  higher  (4-­stroke  engine  oil  for  automobile)

–  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.

Cover

Protrusion

Slot of eyelet

In replacement, perform the following procedure.

1)     Confirm  that  the  tank  cap  is  tightened  securely.  

2)   Detach the oil gauge.  

Keep the oil gauge free from dust or dirt.

Fuel tank cap

Oil gauge

CAUTION:   Before doing any work on the Petrol Brushcutter, 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 screws or missing parts. Pay 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.

–  Perform the following work daily after use:

•   Clean  the  Petrol  Brushcutter  externally  and  inspect  for  damage.
•   Clean  the  air  filter.  When  working  under  extremely  dusty  conditions,  clean  the  filter  the  severall  times  a  day.
•   Check  the  blade  or  the  nylon  cutting  head  for  damage  and  make  sure  it  is  firmly  mounted.
•   Check  that  there  is  sufficient  difference  between  idling  and  engagement  speed  to  ensure  that  the  cutting  tool  is  at  a  standstill  while  the  

engine is idling (if necessary reduce idling speed). 

If under idling conditions the tool should still continue to run, consult your nearest Authorized Service Agent.

–  Check the functioning of the I-O switch, the lock-off lever, the control lever, and the look button.

SERVICING INSTRUCTIONS

Summary of Contents for EBH252U

Page 1: ... this instruction manual carefully before putting the Petrol Brushcutter into operation and strictly observe the safety regulations Preserve instruction manual carefully Petrol Brushcutter EBH252U EBH253U EBH252L EBH253L ORIGINAL INSTRUCTION MANUAL ...

Page 2: ...de or nylon cutting head 12 Before start of operation 13 Correct handling of machine 15 Points in operation and how to stop 15 Resharpening the cutting tool 17 Servicing instructions 19 Storage 22 Take Particular care and attention Read instruction manual and follow the warnings and safety precautions Forbidden No smoking No open flame Protective gloves must be worn Keep the area of operation clear...

Page 3: ...ng which could become 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 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 replaced at the la...

Page 4: ... the machine Never put the hot brushcutter onto dry grass or onto any combustible materials Always install the approved cutting tool guard onto the equipment before starting the engine Otherwise contact with the cutting tool may cause serious injury All protective installations and guards supplied with the machine must be used during operation Never operate the engine with faulty exhaust muf fler S...

Page 5: ...is thrown sideway or toward the operator at great force and it may cause serious injury Kickback occurs particularly when applying the blade segment between 12 and 2 o clock to solids bushes and trees with 3 cm or larger diameter To avoid kickback Apply the segment between 8 and 11 o clock Never apply the segment between 12 and 2 o clock Never apply the segment between 11 and 12 o clock and betwee...

Page 6: ... or damage caused by the use of non approved cutting tools and fixing devices of cutting tools or accessories First Aid In case of 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 When asking for help please give the following information Place of accident What happened Number of injured persons Ki...

Page 7: ...33 Maximum speci fic fuel consumption g kwh 408 Idling speed min 1 3 000 Carburetor type WALBRO WYL Ignition system type Solid state ignition Spark plug type NGK CMR4A Electrode gap mm 0 7 0 8 Vibration per ISO 22867 Right handle Rear grip ahv eq m s2 2 5 5 0 Uncertainty K m s2 0 58 1 23 Left handle Front grip ahv eq m s2 2 9 4 3 Uncertainty K m s2 0 37 0 36 Sound pressure level average to ISO 2286...

Page 8: ...33 Maximum speci fic fuel consumption g kwh 408 Idling speed min 1 3 000 Carburetor type WALBRO WYL Ignition system type Solid state ignition Spark plug type NGK CMR4A Electrode gap mm 0 7 0 8 Vibration per ISO 22867 Right handle Rear grip ahv eq m s2 2 6 5 3 Uncertainty K m s2 0 83 1 22 Left handle Front grip ahv eq m s2 2 3 4 4 Uncertainty K m s2 0 52 0 21 Sound pressure level average to ISO 2286...

Page 9: ... cleaner 4 I O switch on off 5 Spark plug 6 Exhaust muf fler 7 Clutch case 8 Rear grip 9 Hanger 10 Handle 11 Control lever 12 Control cable 13 Shaft 14 Protector Cutting tool guard 15 Gear Case Head case 16 Handle holder 17 Cutter blade 18 Nylon cutting head 19 Fuel filler cap 20 Starter knob 21 Exhaust pipe 22 Oil gauge ...

Page 10: ...orking position and then secure by firmly hand tightening knob 1 CAUTION Do not forget to mount spring 5 Engine MOUNTING OF HANDLE For machines with loop handle Fix a barrier to the left side of the machine together with the handle for operator protection Make sure that the grip barrier assembly is fitted between the spacer and the arrow mark WARNING Do not remove or shrink the spacer The spacer kee...

Page 11: ...de diameter Metal blade Protector for metal blades Nylon cutting head Protector for nylon cutting head 3 2 1 3 4 MOUNTING OF PROTECTOR In use of the metal blade fix the protector 3 to the clamp 2 with two bolts M6 x 30 1 NOTE Tighten the right and left bolts evenly so that the gap between the clamp 2 and the protector 3 will be constant Otherwise the protector sometimes may not function as speci fie...

Page 12: ...sher 3 cup 2 and secure the cutter blade with the 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 The clamp washer 3 cup 2 and nut 1 are not necessary for mounting the nylon ...

Page 13: ...upright oil may go into around the engine and may be re filled excessively If the oil is filled above the limit the oil may be contaminated or may catch fire with white smoke Point 1 in Replacement of oil Oil gauge Remove dust or dirt near the oil re fill 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 irregu...

Page 14: ...r by tilting the fuel tank so that the refuel port will be oriented upward Never re fill fuel full to the oil re fill 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 If there is any flaw or damage on the tank cap replace it The tank cap is consumable and therefore should be renewed every two to three...

Page 15: ...H253L In an emergency push the notches 1 at both sides and you can detach the machine from you Be extremely careful to maintain control of the machine at this time Do not allow the machine to be de flected 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 For EBH252U EBH253U In an emergency pus...

Page 16: ...ed of 6 000 8 500 min 1 OPEN CLOSE Carburetor Primer Pump 4 Primer pump Continue to push the primer pump until fuel enters into the primer pump In general fuel enters into the primer pump by 7 to 10 pushes If the primer pump is pushed excessively an excess of gasoline returns to the fuel tank 5 Recoil starter Pull the start knob gently until it is hard to pull compression point Then return the sta...

Page 17: ... adjusting screw illustrated on the right 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 Authorized Service Agent Adjusting screw Carburetor CAUTION The cutting tools menti...

Page 18: ...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 Most effective cutting area Idle speed Full speed Knob Cover Latches Press Press 80 mm 3 1 8 Spool For left hand rotation Spool 100 mm 3 15 16 Notches Eyelets Replacing the nylon cord First stop the engi...

Page 19: ...rk on the Petrol Brushcutter 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 screws or missing parts Pay...

Page 20: ... remove the element felt Plate Element sponge Air cleaner cover Fixing bolt Element felt Breather Part Waste or paper 3 Place waste or paper near the oil re fill port POINTS ON OIL Never discard replaced engine oil in garbage earth or sewage ditch Disposal of oil is regulated by law In disposal always follow the relevant laws and regulations For any points remaining unknown contact Authorized Servi...

Page 21: ...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 piston seizure Fuel pipe House clamp Fuel pipe 0 7 mm 0 8 mm 0 028 0 032 CHECKING THE SPARK PLUG Only use the supplied uni...

Page 22: ...e 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 Drain fuel Humidity STORAGE Attention after long time storage Before startup after long time shutdown be sure to replace oil refer to P 19 Oil will deteriorate while the machine is kept out of operation Fault System Observation Cause Engine not starti...

Page 23: ...res ponding P Engine oil Inspect clean 13 Replace 1 19 Tightening parts bolt nut Inspect 21 Fuel tank Clean inspect Drain fuel 3 22 Throttle lever Check function Stop switch Check function 17 Cutting blade Inspect 11 Low speed rotation Inspect adjust 17 Air cleaner Clean 20 Ignition plug Inspect 21 Cooling air duct Clean inspect 21 Fuel pipe Inspect 21 Replace 2 Gear case grease Re fill 21 Fuel filt...

Page 24: ...park plug Replace Abnormal carburetor Make request for inspection and maintenance Starter rope cannot be pulled Make request for inspection and maintenance Abnormal drive system Make request for inspection and maintenance Engine stops soon Engine speed does not increase Insuf ficient warm up Perform warm up operation Choke lever is set to CLOSE although engine is warmed up Set to OPEN Clogged fuel ...

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Page 28: ...Makita Corporation Anjo Aichi Japan 884909F228 www makita com ALA ...

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