Replace it if necessary.

Inner Tube Inspection
Spring Tension InspectionMaster Cylinder Inspection (Visual Inspection)
Remove the master cylinders (see Front/Rear Master
Cylinder Removal).
Disassemble the front and rear master cylinders (see
Master Cylinder Rubber Parts Replacement in the Periodic
Maintenance chapter).
Check that there are no scratches, rust or pitting on the
inner wall [A] of each ma ...
Kawasaki Intelligent anti-lock Brake System (KIBS,
For models equipped with KIBS)
KIBS regulates anti-lock braking performance
with more precision during
sports riding compared to a conventional
ABS system.
KIBS is designed to help prevent
the wheels from locking up when the
brakes are applied hard while riding
straight. KIBS automatically regulates
brake force using en ...
Water Pump Housing Assembly
NOTICE
Do not reuse the mechanical seal and oil seal.
Apply high-temperature grease to the new oil seal lips [A].
Press the new oil seal into the housing with a bearing
driver [B] until it stops at the bottom surface [C] of the
housing.
Special Tool - Bearing Driver Set: 57001-1129
...