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 ...

    Removing the front brake caliper
    NOTE: Before disassembling the brake caliper, drain the brake fluid from the entire brake system. 1. Remove: Brake hose union bolt "1" Copper washers "2" Brake hose "3" NOTE: Put the end of the brake hose into a container and pump out the brake fluid carefully. ...

    Checking the camshaft sprocket and timing chain guide
    1. Check: Camshaft sprocket More than 1/4 tooth wear "a" Replace the camshaft sprocket, timing chain and crankshaft as a set. a. 1/4 tooth b. Correct 1. Timing chain roller 2. Camshaft sprocket 2. Check: Timing chain guide (exhaust side) Damage/wear Replace. ...

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