8-25
8
TIP
A diagnostic tachometer is needed to make this
adjustment.
1. Start the engine and warm it up.
TIP
The engine is warm when it quickly responds to the
throttle.
2. Attach the tachometer to the spark plug lead.
3. Check the engine idling speed and, if neces-
sary, adjust it to specification by turning the
throttle stop screw at the carburetor. To in-
crease the engine idling speed, turn the throt-
tle stop screw in direction (a), and to decrease
it, turn the screw in direction (b).
TIP
If the specified idling speed cannot be obtained as
described above, have a Yamaha dealer make the
adjustment.
1. Throttle stop screw
Engine idling speed:
1450–1550 r/min
U5UH65E0.book Page 25 Monday, June 16, 2008 10:34 AM
Summary of Contents for GRIZZLY 350 YFM35FGY
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