If the surface is corroded or if the blades are damaged, replace the impeller

Water Pump Impeller Disassembly/Assembly
Water Pump Housing DisassemblySteering Damper Installation
Install the following parts as shown in the figure.
Collar [A]
Washer (t = 3.5 mm, 0.14 in.) [B]
Steering Damper [C] (
ZX1000JC/KC)
Electronic Steering Damper [D] (ZX1000JD/KD)
Washer (t = 1.2 mm, 0.05 in.) [E]
Apply a non-permanent locking agent to the threads of
the steering ...
DFI Parts Location
Main Throttle Sensor [A]
Subthrottle Sensor [B]
Idle Speed Control Valve Actuator [C]
Subthrottle Valve Actuator [D]
Intake Air Pressure Sensor #2 [E]
Stick Coils #1, #2, #3, #4 [F]
Air Switching Valve [G]
Intake Air Pressure Sensor #1 [H]
Water Temperature Sensor [A]
Primary Fuel Injec ...
Steering Stem Warp Inspection
Whenever the steering stem is removed, or if the steering
can not be adjusted for smooth action, check the steering
stem for straightness.
If the steering stem [A] is bent, replace the steering stem.
Stem Cap Deterioration, Damage Inspection
Replace the stem cap if its oil seal [A] s ...