Yamaha YZF-R125 Service Manual: Checking the shift forks

Yamaha YZF-R125 Service Manual / Engine / Transmission / Checking the shift forks

The following procedure applies to all of the shift forks.

1. Check:

  • Shift fork cam follower "1"
  • Shift fork pawl "2" Bends/damage/scoring/wear
    Replace the shift fork.

Checking the shift forks


2. Check:

  • Shift fork guide bar Roll the shift fork guide bar on a flat surface.

    Bends  Replace.


WARNING

Do not attempt to straighten a bent shift fork guide bar.

Checking the shift forks


3. Check:

Shift fork movement (along the shift fork guide bar) Rough movement Replace the shift
forks and shift fork guide bar as a set.

Checking the shift forks


    Transmission
    ...

    Checking the shift drum assembly
    1. Check: Shift drum groove Damage/scratches/wear Replace the shift drum assembly. Shift drum segment "1" Damage/wear  Replace the shift drum assembly. Shift drum bearing "2" ...

    Other materials:

    Checking the engine oil level
    1. Stand the vehicle on a level surface. NOTE: Place the vehicle on a suitable stand. Make sure the vehicle is upright. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. Check: Engine oil level The engine oil level should be between the minimum level ...

    Installing the swingarm
    1. Lubricate: Bearings Spacers Dust covers Pivot shaft 2. Install: Bearings "1" 2. Swingarm A. Left side B. Right side 3. Install: Swingarm adjusting collar "1" Swingarm "2" Pivot shaft Pivot shaft nut "3" a. Install, and then fully turn in the swingarm adju ...

    Storage
    Short-term Always store your motorcycle in a cool, dry place and, if necessary, protect it against dust with a porous cover. NOTICE Storing the motorcycle in a poorly ventilated room or covering it with a tarp, while it is still wet, will allow water and humidity to seep in and ...

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