Master Cylinder Inspection (Visual Inspection)
Disassemble the front and rear master cylinders.
Check that there are no scratches, rust or pitting on the
inner wall of each master cylinder [A] and on the outside
of each piston [B].
If a master cylinder or piston shows any damage, replace
Inspect the primary [C] and secondary [D] cups.
If a cup is worn, damaged, softened (rotted), or swollen,
the piston assembly should be replace to renew the cups.
If fluid leakage is noted at the brake lever, the piston as-
sembly should be replaced to renew the cup.
Check the dust covers [E] for damage.
If they are damaged, replace them.
Check that the relief [F] and supply [G] ports are not
If the small relief port becomes plugged, the brake pads
will drag on the disc. Blow the ports clean with com-
Check the piston return springs [H] for any damage.
If a spring is damaged, replace it.
[J] Front Master Cylinder
[K] Rear Master Cylinder