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:

Exploded View
HG: Apply high-temperature grease. HO: Apply heavy oil. L: Apply a non-permanent locking agent. MO: Apply molybdenum disulfide oil solution. (mixture of the engine oil and molybdenum disulfide grease in a weight ratio 10:1) R: Replacement Parts Specifications Special Too ...

Oxygen Sensor Removal (Equipped Models)
Remove: Fuel Tank (see Fuel Tank Removal in the Fuel System (DFI) chapter) Right Lower Fairing (see Lower Fairing Removal in the Frame chapter) Disconnect the oxygen sensor lead connector [A]. NOTICE Do not pull strongly, twist, or bend the oxygen sensor lead. This may cause the wi ...

Stick Coil Inspection
Remove the stick coils (see Stick Coil Removal). Measure the primary winding resistance [A] as follows. Connect the hand tester between the coil terminals. Set the tester to the × 1 Ω range, and read the tester. Measure the secondary winding resistance [B] as follows. Conn ...