Spark Plug; Engine Idle Rpm Adjustment; Throttle Cable Adjustment - Arctic Cat 650 2011 Operator's Manual

10. Remove the jumper cables in oppo-
site order of hook-up (4, 3, 2, 1). Be
careful not to short cables against
bare metal.

NOTE: Have the battery and elec-
trical system checked prior to oper-
ating the vehicle again.

Spark Plug

The ATV comes equipped with a specified
spark plug. See the specifications chart
for the correct spark plug. A light brown
insulator indicates that the plug is correct.
A white or dark insulator indicates that the
engine may need to be serviced or the car-
buretor may need to be adjusted. Consult
an authorized Arctic Cat ATV dealer if the
plug insulator is not a light brown color.
To help prevent cold weather fouling,
make sure to thoroughly warm up the
engine before operating.
To maintain a hot, strong spark, keep the
plug free of carbon.
Before removing the spark plug, be sure
to clean the area around the spark plug. If
you do not, dirt could enter engine when
removing or installing the spark plug.
Adjust the gap to specified amount (see
appropriate specifications chart) for
proper ignition. Use a feeler gauge to
check the gap.
When installing the spark plug, be sure to
tighten it securely. A new spark plug
should be tightened 1/2 turn once the
washer contacts the cylinder head. A
used spark plug should be tightened 1/8 -
1/4 turn once the washer contacts the cyl-
inder head.
Engine Idle RPM Adjust-
ment

NOTE: The idle adjustment screw
is located on the right-hand side of
the carburetor.
1. Start the engine and warm it up to
normal operating temperature.
2. Turn the idle adjustment screw in or
out until the engine idles at 1250-
1350 RPM.
! WARNING
Adjust the idle to the correct RPM.
Make sure the engine is at normal
operating
adjusting the idle RPM.
Throttle Cable
ATV-0051
Adjustment
To adjust the throttle cable free-play:
1. Loosen the jam nut from the throttle
cable adjuster.
2. Slide the rubber boot away and turn the
adjuster until the throttle lever has
proper free-play of 3-6 mm (1/8-1/4 in.).
ATV0052B
AF920
temperature before
67