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:

Exploded View
14. Thermostat 15. Frame No. JKAZXT00JJA003074 or JKAZXCJ1 BA003074 G: Apply grease. HG: Apply high-temperature grease. L: Apply a non-permanent locking agent. R: Replacement Parts S: Follow the specified tightening sequence. W: Apply water. 1. US, CA and CAL Models 2. Fra ...

Engine Oil Change
Situate the motorcycle so that it is vertical after warming up the engine. Remove the engine oil drain bolt [A] to drain the oil. The oil in the oil filter can be drained by removing the filter (see Oil Filter Replacement). Replace the drain bolt gasket [B] with a new one. Tighten t ...

Seat Cover Installation
Installation is the reverse of removal. Note the following. When installing the pad [A], install it along the corner [B] as shown in the figure. When installing the pad [C], align the ends [D], along the corner [E], and wrap [F] the upper edge of the seat cover. Install the damper [A] ...