Yamaha YZF-R125 Service Manual: Checking the oil pump

Yamaha YZF-R125 Service Manual / Engine / Oil pump / Checking the oil pump

1. Check:

  • Oil pump drive gear
  • Oil pump driven gear
  • Oil pump housing
  • Oil pump housing cover Cracks/damage/wear Replace the
    defective part(s).

2. Measure:

  • Inner-rotor-to-outer-rotor-tip clearance "a"
  • Outer-rotor-to-oil-pump-housing clearance "b"
  • - Oil-pump-housing-to-inner-rotor-and-outerrotor clearance "c"

Out of specification Replace
the oil pump.

Checking the oil pump


1. Inner rotor

2. Outer rotor

3. Oil pump housing


3. Check:

Oil pump operation Rough movement Repeat steps (1)
and (2) or replace the defective part(s).

Checking the oil pump


    Oil pump
    ...

    Assembling the oil pump
    1. Lubricate: Oil pump inner rotor Oil pump outer rotor Oil pump driven gear (with the recommended lubricant) 2. Install: Oil pump outer rotor Oil pump inner rotor "1" Oil pump dr ...

    Other materials:

    Coolant
    The coolant level should be checked before each ride. In addition, the coolant must be changed at the intervals specified in the periodic maintenance and lubrication chart. To check the coolant level Place the vehicle on a level surface and hold it in an upright position. TIP ...

    Parking
    When parking, stop the engine, and then remove the key from the main switch. WARNING Since the engine and exhaust system can become very hot, park in a place where pedestrians or children are not likely to touch them and be burned. Do not park on a slope or on soft ground, ...

    Assembling the main axle and drive axle
    1. Install: Toothed washer "1" Circlip "2" NOTE: Be sure to install the circlip so that its sharp edge "a" is facing away from the toothed washer and gear. Be sure the circlip ends "b" are positioned at the axle spline groove "c". 2. Install: 2nd pinion gear "1" NO ...

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