Kawasaki Ninja Service Manual: Cooling System Flushing

Kawasaki Ninja Service Manual / Cooling System / Coolant / Cooling System Flushing

Over a period of time, the cooling system accumulates rust, scale, and lime in the water jacket and radiator. When this accumulation is suspected or observed, flush the cooling system. If this accumulation is not removed, it will clog up the water passage and considerable reduce the efficiency of the cooling system.

Drain the cooling system (see Coolant Change in the Periodic Maintenance chapter).
Fill the cooling system with fresh water mixed with a flushing compound.

NOTICE

Do not use a flushing compound which is harmful to the aluminum engine and radiator. Carefully follow the instructions supplied by the manufacturer of the cleaning product.

Warm up the engine, and run it at normal operating temperature for about 10 minutes.
Stop the engine, and drain the cooling system.
Fill the system with fresh water.
Warm up the engine and drain the system.
Repeat the previous two steps once more.
Fill the system with a permanent type coolant and bleed the air from the system (see Coolant Change in the Periodic Maintenance chapter).

Pressure Testing

Remove: Upper Fairing Assembly (see Upper Fairing Assembly Removal in the Frame chapter) Radiator Cap [A] Remove the radiator cap in two steps. First turn the cap counterclockwise to the ...

Coolant Reserve Tank Removal

Remove: Upper Fairing Assembly (see Upper Fairing Assembly Removal in the Frame chapter) Bolt [A] Cap [B] Pour the coolant into a container. Remove: Radiator Overflow Hose [C] (Discon ...

Other materials:

Rear Caliper Removal
Remove: Bolt [A] Rear Wheel Rotation Sensor [B] Loosen the banjo bolt [C] at the brake hose lower end, and tighten it loosely. Loosen the caliper holder pin [D]. Remove the rear wheel (see Rear Wheel Removal in the Wheels/Tires chapter). Unscrew the banjo bolt and remove t ...

Cable, Wire, and Hose Routing
1. Clamp (Hold the regulator/rectifier lead. Run the lead inside of the installation hole.) 2. Clamp (Bend down the clamp, and hold the main harness and the vacuum hose (equipped models).) 3. Clamp (Hold the air intake solenoid valve lead (equipped models).) 4. Run the vacuum hose under ...

Rear Shock Absorber Removal
Remove: Lower Fairings (see Lower Fairing Removal in the Frame chapter) Fuel Tank (see Fuel Tank Removal in the Fuel System chapter) Bolts [A] (Both Sides) Foot Guard [B] (Both Sides) Squeeze the brake lever slowly and hold it with a band [A]. WARNINGBe sure to h ...