Carburetor Adjustment - Yamaha BIG BEAR YFM400S Owner's Manual

WARNING
POTENTIAL HAZARD
Improperly purging the exhaust system.
Hot exhaust system.
WHAT CAN HAPPEN
Could injure the eyes.
Could cause burns.
Could cause carbon monoxide poison-
ing, possibly leading to death.
Could start a fire.
HOW TO AVOID THE HAZARD
When cleaning the spark arrester:
Always let the exhaust system cool pri-
or to touching exhaust components.
Always wear eye protection, and make
sure no one is behind the vehicle.
Never run the engine in an enclosed
area.
Make sure there are no combustible ma-
terials in the area.
EBU00296

Carburetor adjustment

The carburetor is a vital part of the engine and
requires very sophisticated adjustment. Most
adjusting should be left to a Yamaha dealer
who has the professional knowledge and ex-
perience to do so. However, the idling speed
may be performed by the owner as a part of
the usual maintenance routine.
CAUTION:
The carburetor was set at the Yamaha fac-
tory after many tests. If the settings are
disturbed by someone without sufficient
technical knowledge, poor engine perfor-
mance and damage may result.
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