
DIVISION
II - OPERA
T
ION/
MAINTE
NAN
CE
49
Spark Plug
The ATV comes equipped with a specified spark plug. See the specifica-
tions 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 carburetor 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 0.6-0.7 mm
(0.024-0.028 in.) for proper igni-
tion. 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 cylin-
der head.
Engine Idle RPM Adjustment
To properly adjust the idle, a tachometer is necessary. If one is not
available, take the ATV to an authorized Arctic Cat ATV dealer.
To adjust idle RPM:
1. Start the engine and warm it
up to normal operating tem-
perature.
2. Turn the idle adjustment screw
in or out until the engine idles
at 1700 RPM.
Throttle Cable Adjustment
The throttle has been adjusted at the factory, and no adjustment
should be necessary. If adjustment is necessary, the following proce-
dure should be followed:
1. Pull back rubber boots to
access cable adjustment nut.
2. Loosen jam nut to allow
cable adjustment nut to be
adjusted.
3. Turn cable adjustment nut
clockwise to increase free-
play in the cable. Turn the
adjustment nut counter-
clockwise to decrease free-
play in the cable.
4. There should be approxi-
mately 6 mm (1/4 in.) free-
play in the cable.
5. Tighten the jam nut to
secure the adjustment.
ATV-0051
ATV0052A
! WARNING
Adjust the idle to the correct RPM. Make sure the engine is at
normal operating temperature before adjusting the idle RPM.
KM004A
KM070A
KM071A
Содержание 2011 ATV 90
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