Yamaha XZ550RJ 1982 Service Manual page 2

FEATURES
XZ550RJ
Liquid-cooled V-Twin
The 70° V-Twin engine is liquid-cooled to maintain the best operating temperature range. The cooling system
features an aluminum-corrugate radiator which is extremely light and exhibits excellent heat-dissipating char-
acteristics. An automatically activated electric fan pulls air through the radiator in heavy-traffic situations. The
system has an automotive-type expansion and recovery tank which makes airspace in the radiator unneces-
sary and virtually eliminates coolant loss on even the hottest days. A thermostatic valve mounted in the engine
block provides quick warmups and stable coolant temperature.
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