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 ...

Other materials:

US, CA and CAL Models
1. Hold the water hose [A]. Insert the tab into the slot. 2. Hold the water hose [B]. Insert the tab into the slot. 3. Water Hose Fitting on Cylinder Head 4. Heat Insulation Rubber Plate 5. Run the crankshaft sensor lead and the oil pressure switch lead into the slot, and hook the slot on ...

Special Tools
Fork Oil Level Gauge: 57001-1290 Vacuum Gauge: 57001-1369 Hand Tester: 57001-1394 Throttle Sensor Setting Adapter #1: 57001-1400 Peak Voltage Adapter: 57001-1415 Needle Adapter Set: 57001-1457 Throttle Sensor Setting Adapter: 57001-1538 Measuring Adapter: 57001-1700 ...

Lower Fairing Installation
Installation is the reverse of removal. Note the following. When installing the pad [A], align the edge of the pad and the marking of the fairing [B]. When installing the pad [C], align the edge of the pad and the fairing [D], and fit the edge of the pad to the boss [E]. Insert the hoo ...