88
G
E
N
E
R
A
L
M
A
IN
T
E
N
A
N
C
E
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 tempera-
ture.
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 nor-
mal operating temperature before adjusting the idle RPM.
ATV-0051
ATV-0052
KM105A
250_DVX MANUAL
02.08.2006, 15:29 Uhr
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