Yamaha GX1800A, Руководство по обслуживанию

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Technical tips
Jet pump unit
The jet pump, jet intake and jet nozzle have been newly designed to correspond to the higher output
engine.
The jet pump components have been improved in strength and optimized for better functionality to
handle higher output.
8 Thermostat
Thermostat valve opening temperature has been changed to
optimize engine temperature and to reduce pollutants in the
exhaust gases.
9 Cooling water passage
Cooling passages through exhaust manifold and exhaust man-
ifold gasket have been optimized to reduce thermal load.
10 Premium gasoline
Provides better anti-knock property to correspond to higher
engine output.
Major changes Description
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