Yamaha YZF-R125 Service Manual: Installing the drive chain

Yamaha YZF-R125 Service Manual / Chassis / Chain drive / Installing the drive chain

1. Lubricate:

  • Drive chain
  • Master link

2. Install:

  • Drive sprocket
  • Drive sprocket retainer bolts

3. Install:

  • Master link
  • O-rings
  • Master link plate
  • Master link clip "1"

CAUTION:
  • The closed end of the master link clip must face in the direction of drive chain rotation.
  • Never install a new drive chain onto worn drive chain sprockets; this will dramatically shorten the drive chain's life.

NOTE:

Install the master link plate with its manufacturer mark facing outward.

Installing the drive chain


4. Install:

  • Drive sprocket cover

NOTE:

Be sure not to pinch the neutral switch lead when installing the drive sprocket cover.

5. Install:

  • Rear wheel Refer to "REAR WHEEL" on page 4-12.

6. Adjust:

  • Drive chain slack Refer to "ADJUSTING THE DRIVE CHAIN SLACK" on page 3-21.

CAUTION:

A drive chain that is too tight will overload the engine and other vital parts, and one that is too loose can skip and damage the swingarm or cause an accident. Therefore, keep the drive chain slack within the specified limits.

    Checking the drive sprocket
    1. Check: Drive sprocket More than 1/4 tooth "a" wear Replace the drive chain sprockets as a set. Bent teeth Replace the drive chain sprockets as a set. b. Correct 1. Dri ...

    Engine
    ...

    Other materials:

    Adjusting the drive chain slack
    NOTE: The drive chain slack must be checked at the tightest point on the chain. CAUTION:A drive chain that is too tight will overload the engine and other vital parts, and one that is too loose can skip and damage the swingarm or cause an accident. Therefore, keep the drive ...

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    The following procedure applies to the low beam headlight bulb. 1. Remove: Headlight bulb cover "1" 2. Remove: Headlight bulb holder "1" 3. Remove: Headlight bulb "1" WARNINGSince the headlight bulb gets extremely hot, keep flammable products and your ...

    Introduction
    WARNINGDisc brake components rarely require disassembly. Therefore, always follow these preventive measures: Never disassemble brake components unless absolutely necessary. If any connection on the hydraulic brake system is disconnected, the entire brake sy ...

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