Yamaha YZF-R125 Service Manual: Installing the shift forks and shift drum assembly

Yamaha YZF-R125 Service Manual / Engine / Transmission / Installing the shift forks and shift drum assembly

1. Install:

  • Shift fork-L "1"
  • Shift fork-C "2"
  • Shift fork-R "3"
  • Shift drum assembly "4"
  • Springs
  • Shift fork guide bar "5"

NOTE:

The embossed marks on the shift forks should face towards the right side of the engine and be in the following sequence: "R", "C", "L".

Installing the shift forks and shift drum assembly


2. Check:

Transmission Rough movement Repair.


NOTE:

  • Apply engine oil to each gear and bearing thoroughly.
  • Before assembling the crankcase, make sure that the transmission is in neutral and that the gears turn freely.

Installing the shift forks and shift drum assembly


    Assembling the main axle and drive axle
    1. Install: Toothed washer "1" Circlip "2" NOTE: Be sure to install the circlip so that its sharp edge "a" is facing away from the toothed washer and gear. Be sure the circlip ends ...

    Cooling system
    ...

    Other materials:

    Assembling the front brake caliper
    WARNING Before installation, all internal brake components should be cleaned and lubricated with clean or new brake fluid. Never use solvents on internal brake components as they will cause the brake caliper dust seals and piston seals to swell and distort. ...

    Separating the crankcase
    1. Remove: Crankcase bolts NOTE: Loosen each bolt 1/4 of a turn at a time, in stages and in the proper sequence as shown. A. Right crankcase B. Left crankcase 2. Turn: Shift drum segment NOTE: Turn the shift drum segment "1" to the position shown in the illustration. In this ...

    Checking the primary driven gear
    1. Check: Primary driven gear "1" Damage/wear Replace the primary drive gear and clutch housing as a set. Excessive noise during operation  Replace the primary drive gear and clutch housing as a set. ...

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