Yamaha YZF-R125 Service Manual: Installing the generator

1. Install:

  • Woodruff key
  • Generator rotor
  • Washer
  • Generator rotor nut

NOTE:

  • Clean the tapered portion of the crankshaft and the generator rotor hub.
  • When installing the generator rotor, make sure the woodruff key is properly sealed in the keyway of the crankshaft.

2. Tighten:

  • Generator rotor nut "1"

NOTE:

  • While holding the generator rotor "2" with the sheave holder "3", tighten the generator rotor nut.
  • Do not allow the sheave holder to touch the projection on the generator rotor.

Installing the generator


3. Apply:

  • Sealant (onto the crankshaft position sensor/stator assembly lead grommet)

Installing the generator


4. Install:

  • Generator cover

NOTE:

Tighten the generator cover bolts in the proper tightening sequence as shown.

Installing the generator


    Installing the starter clutch
    1. Install: Starter clutch assembly Starter clutch bolts "1" NOTE: While holding the generator rotor "2" with the sheave holder "3", tighten the starter clutch bolts. Do not allow t ...

    Electric starter
    ...

    Other materials:

    Fi system
    The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the fuel pressure that is applied to the fuel injector at only 250 kPa (2.50 kg/cm², 36.3 psi). Accordingly, when the energizing signal from the ECU energizes the fuel injector, the fuel ...

    Installing the primary drive gear and balancer gears
    1. Install: Balancer driven gear "1" Lock washer Balancer drive gear "2" Primary drive gear Washer "3" Balancer driven gear nut Primary drive gear nut NOTE: Align the punch mark "a" in the balancer drive gear "2" with the punch mark "b" in the balancer driven gear "1". ...

    Checking the rear brake hose
    1. Check: Brake hoses "1" Cracks/damage/wear  Replace. 2. Check: Brake hose holder "2" Loose connection Tighten the holder bolt. Loose or open holder Fasten properly. 3. Hold the vehicle upright and apply the rear brake several times. 4. Check: Brake ho ...

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