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Valve Clearance; Kawasaki Clean Air System - Kawasaki Z1000SX 2012 Owner's Manual

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Valve Clearance

Valve and valve seat wear de-
creases valve clearance, upsetting
valve timing.
If valve clearance is left unad-
justed, wear will eventually cause
the valves to remain partly open;
which lowers performance, burns
the valves and valve seats, and
may cause serious engine dam-
Valve clearance for each valve
should be checked and adjusted in ac-
cordance with the Periodic Mainte-
nance Chart.
Inspection and adjustment should be
done by an authorized Kawasaki deal-

Kawasaki Clean Air System

The Kawasaki Clean Air System
(KCA) is a secondary air suction sys-
tem 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 un-
burned gases, as well as changing a
significant portion of the carbon mon-
oxide 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


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