Yamaha YZF-R125 Service Manual: Assembling the oil pump

Yamaha YZF-R125 Service Manual / Engine / 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 driven gear
  • Pin "2"

NOTE:

When installing the inner rotor, align the pin "2" in the oil pump shaft with the groove "a" in the inner rotor "1".

Assembling the oil pump


3. Check:

  • Oil pump operation Refer to "CHECKING THE OIL PUMP" on page 5-49.
    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-r ...

    Installing the oil pump
    1. Install: Oil pump assembly CAUTION:After tightening the screws, make sure the oil pump turns smoothly. ...

    Other materials:

    Removing the cylinder head
    1. Align: "I" mark "a" on the generator rotor (with the stationary pointer "b" on the generator cover) a. Turn the crankshaft counterclockwise. b. When the piston is at TDC on the compression stroke, align the "I" mark "c" on the camshaft sprocket with the mark "d" on the cylinder h ...

    Checking the drive sprocket
    1. Check: Drive sprocket More than 1/4 tooth "a" wear Replace the drive chain sprockets as a set. Bent teeth Replace the drive chain sprockets as a set. b. Correct 1. Drive chain roller 2. Drive chain sprocket Checking the rear wheel sprocket Refer to "CHECKING AND R ...

    Air induction system
    1. Air induction system hose (air filter case to reed valve assembly) 2. Air induction system reed valve assembly 3. Air induction system hose (reed valve assembly to exhaust pipe) Checking the air induction system Air injection The air induction system burns unburned exhaust gases b ...

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