Yamaha YZF-R125 Service Manual: Assembling the main axle and drive axle

Yamaha YZF-R125 Service Manual / Engine / Transmission / 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 "b" are positioned at the axle spline groove "c".

Assembling the main axle and drive axle


2. Install:

  • 2nd pinion gear "1"

NOTE:

Press the 2nd pinion gear into the main axle "2", as shown in the illustration.


Assembling the main axle and drive axle


    Checking the clutch push rods
    1. Check: Long clutch push rod Cracks/damage/wear Replace the long clutch push rod. 2. Measure: Push rod bending limit Out of specification Replace the long clutch push rod. ...

    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 towar ...

    Other materials:

    Checking the cylinder and piston
    1. Check: Piston wall Cylinder wall Vertical scratches Replace the cylinder, and replace the piston and piston rings as a set. 2. Measure: Piston-to-cylinder clearance a. Measure cylinder bore "C" with the cylinder bore gauge. NOTE: Measure cylinder bore "C" by takin ...

    Checking the cylinder head breather hose
    1. Remove: Left side panel Refer to "GENERAL CHASSIS" on page 4-1. 2. Check: Cylinder head breather hose "1" Cracks/damage → Replace. Loose connection → Connect properly. CAUTION:Make sure the cylinder head breather hose is routed correctly. ...

    Checking the ignition spark gap
    1. Check: Ignition spark gap Out of specification Perform the ignition system troubleshooting, starting with step 5. Refer to "TROUBLESHOOTING" on page 8-3. NOTE: If the ignition spark gap is within specification, the ignition system circuit is operating normally. a. Disconnect the spa ...

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