Yamaha YZF-R125 Service Manual: Checking the timing chain and timing chain guide

Yamaha YZF-R125 Service Manual / Engine / Crankcase / Checking the timing chain and timing chain guide

1. Check:

  • Timing chain Damage/stiffness Replace the
    timing chain and camshaft sprocket as a set.

2. Check:

Timing chain guide (intake side) Damage/wear Replace.


Checking the oil strainer

1. Check:

Oil strainer Damage   Replace.


Contaminants Clean with solvent.


    Checking the crankcase
    1. Thoroughly wash the crankcase halves in a mild solvent. 2. Thoroughly clean all the gasket surfaces and crankcase mating surfaces. 3. Check: Crankcase Cracks/damage Replace. Oil de ...

    Checking the bearings and oil seal
    1. Check: Bearings Clean and lubricate the bearings, and then rotate the inner race with your finger. Rough movement Replace. Oil seal Damage/wear Replace. ...

    Other materials:

    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 and replacing the rear wheel sprocket
    1. Check: Rear wheel sprocket More than 1/4 tooth "a" wear Replace the rear wheel sprocket. Bent teeth Replace the rear wheel sprocket. b. Correct 1. Drive chain roller 2. Rear wheel sprocket 2. Replace: Rear wheel sprocket a. Remove the self-locking nuts and the ...

    Removing the front fork legs
    The following procedure applies to both of the front fork legs. 1. Stand the vehicle on a level surface. WARNINGSecurely support the vehicle so that there is no danger of it falling over. 2. Loosen: Handlebar pinch bolt "1" Handlebar bolt "2" Upper bracket ...

    2019 Copyright www.yam-r125.net |