Technical Tips; Carburetor - Yamaha F60A Supplementary Service Manual

GEN
INFO

Technical tips

Carburetor

Power nozzle
The power nozzle is activated when the engine is operating at high speeds. To reduce the fuel con-
sumption rate and the pollution of the exhaust gases, the carburetors of the F60 are set lean. There-
fore, the air-fuel mixture becomes lean at high engine speeds, when greater output is needed. The
power nozzle supplies a richer fuel mixture at high engine speed to realize the optimal air-fuel ratio
to produce output.
1 Throttle valve
2 Power nozzle
È Air
É Air-fuel mixture
Ê Fuel
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General information
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S69W1300
69W3D1X
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