Adjusting The Engine Idling Speed - Yamaha Raptor YFM7RZ Owner's Manual

EWB02380
WARNING
Never run the engine in an enclosed area when
purging the spark arrester, otherwise it could
cause injury to the eyes, burns, carbon monox-
ide poisoning, possibly leading to death, and
start a fire.
G Always let the exhaust system cool prior to
touching exhaust components.
G
Always wear eye protection, and make sure
no one is behind the ATV.
G
Make sure there are no combustible materi-
als in the area.
EBU26811

Adjusting the engine idling speed

The engine idling speed must be checked and, if
necessary, adjusted as follows at the intervals
specified in the periodic maintenance and lubrica-
tion chart.
TIP
A diagnostic tachometer is needed to make this
adjustment.
1. Start the engine and warm it up.
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
idle adjusting screw. To increase the engine
idling speed, turn the idle adjusting screw in
direction (a), and to decrease it, turn the screw
in direction (b).
(b)
1. Idle adjusting screw
Engine idling speed:
1500–1700 r/min
8-26
1
(a)
8