Carburetor Adjustment - Yamaha YFM660FS Owner's Manual

V-belt case drain plug
After riding in water deep enough to allow it to
enter the V-belt case, remove this plug to
drain the water from the case.
NOTE:
_
If water drains from the V-belt case after re-
moving the plug, have a Yamaha dealer in-
spect the ATV as the water may affect other
engine parts.
_
1. V-belt case drain plug
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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