Kawasaki Ninja Owners Manual: Kawasaki Clean Air System

Kawasaki Ninja Owners Manual / Maintenance and adjustment / Kawasaki Clean Air System

The Kawasaki Clean Air System (KCA) is a secondary air suction system that helps the exhaust gases to burn more completely. When the spent fuel charge is released into the exhaust system, it is still hot enough to burn. The KCA System allows extra air into the exhaust system so that the spent fuel charge can continue to burn.

This continued burning action tends to burn up a great deal of the normally unburned gases, as well as changing a significant portion of the carbon monoxide into carbon dioxide.

Air Suction Valves

The air suction valve is essentially a check valve which allows fresh air to flow only from the air cleaner into the exhaust port. Any air that has passed the air suction valve is prevented from returning. Inspect the air suction valves in accordance with the Periodic Maintenance Chart. Also, inspect the air suction valves whenever stable idling cannot be obtained, engine power is greatly reduced, or there are abnormal engine noises.

Air suction valve removal and inspection should be carried out only by a competent mechanic following the instructions in the Service Manual.

Valve Clearance

Valve and valve seat wear decreases valve clearance, upsetting valve timing. NOTICE If valve clearance is left unadjusted, wear will eventually cause the valves to remain partly open; which lowe ...

Exhaust Device

This motorcycle is equipped with a exhaust device system. This system controls the valve in the exhaust pipe and produces stable engine power at low and middle engine speed. This exhaust device i ...

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ECU Identification
Most countries have their own regulations, so each ECU has different characteristic. So, do not confuse ECU with each other and use only the ECU for your model. Otherwise, the motorcycle can not clear the regulation. ECU Identification ZX1000JB/KB ZX1000JC /KC ...

Master Cylinder Inspection (Visual Inspection)
Remove the master cylinders (see Front/Rear Master Cylinder Removal). Disassemble the front and rear master cylinders (see Master Cylinder Rubber Parts Replacement in the Periodic Maintenance chapter). Check that there are no scratches, rust or pitting on the inner wall [A] of each ma ...

Air Suction Valve Inspection
Remove the air suction valve (see Air Suction Valve Removal). Visually inspect the reeds [A] for cracks, folds, warps, heat damage or other damage. If there is any doubt as to the condition of the reeds, replace the air suction valve as an assembly. Check the reed contact areas [B] of ...