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:

    Installing the primary drive gear and balancer gears
    1. Install: Balancer driven gear "1" Lock washer Balancer drive gear "2" Primary drive gear Washer "3" Balancer driven gear nut Primary drive gear nut NOTE: Align the punch mark "a" in the balancer drive gear "2" with the punch mark "b" in the balancer driven gear "1". ...

    Checking the radiator
    1. Check: Radiator fins obstruction clean. Apply compressed air to the rear of the radiator. Damage  repair or replace. NOTE: Straighten any flattened fins with a thin, flat-head screwdriver. 2. Check: Radiator hoses Cracks/damage Replace. 3. Measure: Radiator cap ...

    Installing the exhaust assembly
    1. Install: Exhaust assembly "1" Exhaust pipe nuts "2" Exhaust assembly bolts "3" "4" NOTE: Do not fully tighten the nuts and bolts. 2. Tighten: Exhaust pipe nuts "2" Exhaust assembly bolt "4" Exhaust assembly bolt "3" ...

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