Yamaha YZF-R125 Service Manual: Checking the clutch springs

Yamaha YZF-R125 Service Manual / Engine / Clutch / Checking the clutch springs

The following procedure applies to all of the clutch springs.

1. Check:

  • Clutch spring Damage Replace the clutch
    springs as a set.

2. Measure:

  • Clutch spring free length "a" Out of specification Replace
    the clutch springs as a set.

Checking the clutch springs


    Checking the clutch plates
    The following procedure applies to all of the clutch plates. 1. Check: Clutch plate Damage Replace the clutch plates as a set. 2. Measure: Clutch plate warpage (with a surface p ...

    Checking the clutch housing
    1. Check: Clutch housing dogs "1" Damage/pitting/wear  Deburr the clutch housing dogs or replace the clutch housing. NOTE: Pitting on the clutch housing dogs will cause erratic cl ...

    Other materials:

    Intake air temperature sensor
    1. Check: Intake air temperature sensor resistance Out of specification Replace the throttle body. a. Connect the pocket tester ( × 1k) to the throttle body sensor assembly coupler as shown. Positive tester probe brown/white "1" Negative tester probe gray/black ...

    Installing the front fork legs
    The following procedure applies to both of the front fork legs. 1. Install: Front fork leg Temporarily tighten the upper and lower bracket pinch bolts. NOTE: Make sure the inner tube end position "a" is 24.5 mm (0.96 in) from the top of the upper bracket. 2. Tighten: Lower br ...

    Measuring the compression pressure
    NOTE: Insufficient compression pressure will result in a loss of performance. 1. Measure: Valve clearance Out of specification →Adjust. Refer to "ADJUSTING THE VALVE CLEARANCE" on page 3-3. 2. Start the engine, warm it up for several minutes, and then turn it off. 3. Remove: ...

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