Yamaha YZF-R125 Service Manual: Installing the relay arm

1. Lubricate:

  • Spacers
  • Bearings
  • Oil seals
  • Bolts (unthreaded shaft portion only)

2. Install:

  • Bearing "1" (to the relay arm)
  • Oil seal "2" (to the relay arm)

Installing the relay arm


3. Rear shock absorber assembly

4. Relay arm

5. Connecting arm

A. Left side

B. Right side

    Checking the connecting arms and relay arm
    1. Check: Connecting arms Relay arm Damage/wear Replace. 2. Check: Bearings Oil seals Damage/pitting Replace. 3. Check: Spacers Damage/scratches Replace. ...

    Installing the rear shock absorber assembly
    1. Install: Rear shock absorber assembly Relay arm "1" NOTE: Install the relay arm as shown in the illustration. 2. Tighten: Rear shock absorber assembly upper nut Relay arm nu ...

    Other materials:

    Adjusting the throttle cable free play
    Throttle cable free play The throttle cable free play should measure 3.0-5.0 mm (0.12-0.20 in) at the throttle grip. Periodically check the throttle cable free play and, if necessary, adjust it as follows. TIP The engine idling speed must be correctly adjusted before checkin ...

    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. Tighte ...

    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. ...

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