Yamaha YZF-R125 Service Manual: Checking the clutch plates

Yamaha YZF-R125 Service Manual / Engine / Clutch / 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 plate and thickness gauge "1") Out of specification Replace
    the clutch plates as a set.

Checking the clutch plates


    Checking the friction plates
    The following procedure applies to all of the friction plates. 1. Check: Friction plate Damage/wear Replace the friction plates as a set. 2. Measure: Friction plate thickness Ou ...

    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 o ...

    Other materials:

    Installing the cylinder head
    1. Install: Cylinder head NOTE: Pass the timing chain through the timing chain cavity. 2. Tighten: Cylinder head bolts "1" Cylinder head bolts "2" NOTE: Lubricate the cylinder head bolts and washers with engine oil. Tighten the cylinder head bolts in the proper tighten ...

    Adjusting the valve clearance
    The following procedure applies to all of the valves. NOTE: Valve clearance adjustment should be made on a cold engine, at room temperature. When the valve clearance is to be measured or adjusted, the piston must be at top dead center (TDC) on the compression stroke. 1. Remove: ...

    Fi system
    The fuel pump delivers fuel to the fuel injector via the fuel filter. The pressure regulator maintains the fuel pressure that is applied to the fuel injector at only 250 kPa (2.50 kg/cm², 36.3 psi). Accordingly, when the energizing signal from the ECU energizes the fuel injector, the fuel ...

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