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FUEL AND EXHAUST SYSTEMS
161
CRANKCASE BREATHER
The crankcase breather separates oil mist
droplets from blowby gas and routes the oil
back to the crankcase via a drain hole. The
vapors are routed to the air cleaner housing. No
maintenance is required; but if the oil drain is
not kept clear during engine assembly or if the
engine is overfilled with oil. oil can be sucked
up into the air cleaner housing.
Removal/Installation
1 . Disconnect the breather hose (Figure 32)
and remove the cover bolt with its O-ring.
2. Remove the cover and O-ring (Figure 33).
3. When installing the breather cover. make
sure the O-rings are in good condition and
make sure the breather cover pin seats behind
the pin cast into the crankcase (Figure 34).
AIR SUCTION SYSTEM
(U.S. MODELS)
The air suction system (Figure 35) consists of
a vacuum switch valve. 2 air suction valves
(reed valves) and air and vacuum hoses. This
system does not pressurize air, but uses the
momentary pressure differentials generated by
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   Also See for Kawasaki KZ500

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Zx550Kz550Kzx550

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