Yamaha YZF-R125 Service Manual: Removing the generator

1. Remove:

  • Generator rotor nut "1"
  • Washer

NOTE:

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

Removing the generator


2. Remove:

  • Generator rotor "1" (with the flywheel puller "2")
  • Woodruff key
CAUTION:

To protect the end of the crankshaft, place an appropriate sized socket between the flywheel puller set center bolt and the crankshaft.

NOTE:

Make sure the flywheel puller is centered over the generator rotor.


Removing the generator


    Generator and starter clutch
    ...

    Removing the starter clutch
    1. Remove: Starter clutch bolts "1" NOTE: While holding the generator rotor "2" with the sheave holder "3", remove the starter clutch bolts. Do not allow the sheave holder to touch th ...

    Other materials:

    Chain drive
    Removing the drive chain 1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. NOTE: Place the vehicle on a suitable stand so that the rear wheel is elevated. ...

    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 starter motor
    1. Check: Commutator Dirt Clean with 600 grit sandpaper. 2. Measure: Commutator diameter "a" Out of specification Replace the starter motor. 3. Measure: Mica undercut "a" Out of specification Scrape the mica to the proper measurement with a hacksaw blade ...

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