Clutch Master Cylinder
Clutch Master Cylinder Inspection
Disassemble the clutch master cylinder (see Clutch Mas-
ter Cylinder Rubber Parts Replacement in the Periodic
Do not remove the secondary cup from the piston
since removal will damage it.
Check that there are no scratches, rust or pitting on the
inside of the master cylinder [A] and on the outside of the
If the master cylinder or piston shows any damage, re-
Inspect the primary cup [C] and secondary cup [D].
If a cup is worn, damaged, softened (rotted), or swollen,
the piston assembly should be replaced to renew the
If fluid leakage is noted at the clutch lever, the piston as-
sembly should be replaced to renew the cups.
Check the dust cover [E] for damage.
If it is damaged, replace it.
Check that the relief and supply ports are not plugged.
If the small relief port becomes plugged, the clutch will
drag. Blow the ports clean with compressed air.
Check the piston return spring for any damage.
If the spring is damaged, replace it.