If they show any damage, replace it.

Caliper Fluid Seal Damage
Caliper Piston and Cylinder DamageExploded View
7. US, CA and CAL Models
8. Immobilizer System Equipped Models
9. ZX1000JD/KD
AD: Apply adhesive.
L: Apply a non-permanent locking agent.
R: Replacement Parts
13. Other than US, CA and CAL Models
CL: Apply cable lubricant.
EO: Apply engine oil.
G: Apply grease.
L: Apply a ...
Engine Oil
In order for the engine, transmission,
and clutch to function properly, maintain
the engine oil at the proper level,
and change the oil and replace the oil
filter in accordance with the Periodic
Maintenance Chart. Not only do dirt
and metal particles collect in the oil, but
the oil itself los ...
Wheel Rotation Sensor Air Gap Inspection
Raise the front/rear wheel off the ground (see Front/Rear
Wheel Removal in the Wheels/Tires chapter).
Measure the air gap between the sensor and sensor rotor
at several points by turning the wheel slowly.
Thickness Gauge [A]
Wheel Rotation Sensor Air Gap
Standard:
Front 0.4 1.6 mm ...