Arctic Cat XC 450 2016, Service Manual

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9
ATV0052C
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 con-
tacts the cylinder head.
Muffler/Spark Arrester
Clean the spark arrester using the following procedure.
1. Remove the cap screws securing the spark arrester
assembly to the muffler; then loosen and remove the
arrester.
KC374A
2. Using a suitable brush, clean the carbon deposits
from the screen taking care not to damage the screen.
 NOTE: If the screen or gasket is damaged in any
way, it must be replaced.
3. Install the spark arrester assembly with gasket; then
secure with the cap screws. Tighten to 48 in.-lb.
Adjusting Throttle Cable
1. Slide the rubber boot away; then loosen the jam nut
from the throttle cable adjuster.
AL611D
2. Turn the adjuster until the throttle cable has proper
free-play of 3-6 mm (1/8-1/4 in.) at the lever.
ATV-0047
3. Tighten the jam nut against the throttle cable adjuster
securely; then slide the rubber boot over the adjuster.
Engine/Transmission Oil -
Filter
The engine should always be warm when the oil is
changed so the oil will drain easily and completely.
1. Park the ATV on level ground.
2. Remove the seat and left-side engine cover.
3. Remove the oil level stick/filler plug.
KC0051A
! WARNING
Wait until the muffler cools to avoid burns.