Service Manual (KLZ1000C) — page 363 of 762

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BRAKES 12-23
Master Cylinder
Master Cylinder Inspection (Visual Inspection)
• Remove the master cylinders (see Front Master Cylinder
  Removal(12-20)) (see Rear Master Cylinder Removal(12
    -21)).
•   Disassemble the front and rear master cylinders (see
    Master Cylinder Rubber Parts Replacement(2-46)).
•   Check that there are no scratches, rust or pitting on the
    inner wall [A] of each master cylinder and on the outside
    of each piston [B].
    If a master cylinder or piston shows any damage, replace
    them.
•   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
    cups.
    If fluid leakage is noted at the brake lever, the piston as-
    sembly should be replaced to renew the cups.
•   Check the dust covers [E] for damage.
    If they are damaged, replace them.
•   Check the piston return springs [F] for any damage.
    If the springs are damaged, replace them.
•   Check that relief port [G] and supply port [H] are not
    plugged.
    If the relief port becomes plugged, the brake pads will
    drag on the disc. Blow the ports clean with compressed
    air.
      Front Master Cylinder [I]
      Rear Master Cylinder [J]