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:

    Checking the condition of the bulb sockets
    The following procedure applies to all of the bulb sockets. 1. Check: Bulb socket (for continuity) (with the pocket tester) No continuity Replace. NOTE: Check each bulb socket for continuity in the same manner as described in the bulb section, however, note the following. a. Install a ...

    Checking the speed sensor
    1. Check: Speed sensor output voltage Out of specification → Replace. a. Connect the pocket tester (DC 20 V) to the speed sensor coupler (wire harness end) as shown. Positive tester probe gray "1" Negative tester probe gray/black "2" b. Set the main switch to "ON". c. ...

    Checking the cylinder and piston
    1. Check: Piston wall Cylinder wall Vertical scratches Replace the cylinder, and replace the piston and piston rings as a set. 2. Measure: Piston-to-cylinder clearance a. Measure cylinder bore "C" with the cylinder bore gauge. NOTE: Measure cylinder bore "C" by takin ...

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