DIVISION II - OPERATION/
MAINTENANCE
49
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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.
Air Filter
The air filter inside the air filter housing must be kept clean to pro-
vide good engine power and gas mileage. If the ATV is used under
normal conditions, service the filter at the intervals specified. If oper-
ated in dusty, wet, or muddy conditions, inspect and service the filter
more frequently. Use the following procedure to remove the filter and
inspect and/or clean it.
! WARNING
Adjust the idle to the correct RPM. Make sure the engine is at
normal operating temperature before adjusting the idle RPM.
CAUTION
Failure to inspect the air filter frequently if the ATV is used in
dusty, wet, or muddy conditions can damage the engine.