Yamaha YZF-R125 Service Manual: Installing the shift shaft

Yamaha YZF-R125 Service Manual / Engine / Shift shaft / Installing the shift shaft

1. Install:

  • Stopper lever "1"
  • Stopper lever spring "2"

NOTE:

  • Install the stopper lever spring as shown in the illustration.
  • Hook the ends of the stopper lever spring onto the stopper lever and the crankcase boss "3".
  • Mesh the stopper lever with the shift drum segment assembly.

Installing the shift shaft


2. Install:

  • Shift shaft "1"

NOTE:

Hook the end of the shift shaft spring onto the shift shaft spring stopper "2".

    Checking the shift shaft
    1. Check: Shift shaft Bends/damage/wear Replace. Shift shaft spring Damage/wear Replace. Checking the stopper lever 1. Check: Stopper lever Bends/damage Replace. Roller ...

    Balancer gear
    ...

    Other materials:

    Checking the crankshaft
    1. Measure: Crankshaft runout Out of specification Replace the crankshaft, bearing or both. NOTE: Turn the crankshaft slowly. 2. Measure: Big end side clearance Out of specification Replace the crankshaft. 3. Measure: Crankshaft width Out of specification&nbs ...

    Drive chain slack
    The drive chain slack should be checked before each ride and adjusted if necessary. To check the drive chain slack Place the motorcycle on the sidestand. TIP When checking and adjusting the drive chain slack, there should be no weight on the motorcycle. Shift the transmission in ...

    Checking the thermostat
    1. Check: Thermostat Does not open at 80.5-83.5 C (176.9-182.3 F)  Replace. a. Suspend the thermostat "1" in a container "2" filled with water. b. Slowly heat the water "3". c. Place a thermometer "4" in the water. d. While stirring the water, observe the thermostat and th ...

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