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

Water Pump Impeller Disassembly/Assembly
Water Pump Housing DisassemblyEngine No. ZXT00JE003023
1. Heat Insulation Rubber Plate
2. For Air Switching Valve Hoses (Place the air switching valve above the
rubber plate.)
3. For Stick Coils
4. For Throttle Body Assy Holder #2 and #3
5. For Water Temperature Sensor
6. Insert the tab into the slot.
7. For Throttle Body Assy Holder #4
8. ...
Torque Limiter Removal
Remove:
Starter Motor (see Starter Motor Removal in the Electrical
System chapter)
Throttle Body Assy Holder [A]
Breather Hose [B]
Roll up the heat insulation rubber plate [C].
Remove:
Torque Limiter Cover Bolts [A]
Torque Limiter Cover [B]
Remove:
Torque Limit ...
Lights and Switches Operation Inspection
First Step
Set the gear position in the neutral position.
Turn the ignition switch to ON.
The following lights should go on according to below table.
If the following light does not go on, inspect the meter
unit (see Meter Unit Inspection in the Electrical System
chapter).
...