25
747-545A
Spark Plug
NOTE: Always use the recom-
mended spark plug in the engine.
See the appropriate specifications
sheet for correct spark plug gap.
1. Remove the springs securing the
expansion chamber to the exhaust
manifold and resonator.
2. Move the expansion chamber out of
the way to access the spark plug.
3. Remove the spark plug cap from the
plug.
4. Using a spark plug wrench, remove
the plug.
5. Install the plug and finger-tighten.
6. Tighten the spark plug to 19 ft-lb
(25.8 N-m); then install the spark
plug cap.
7. Place the expansion chamber into
position and secure to the exhaust
manifold and resonator with the
springs.
Checking/Adjusting
APV Cable
Proper cable adjustment is critical to the
operation of the APV system. Although
inspecting cable adjustment is recommended
every 1000-2000 miles (1600-3200 km), the
cable should not need adjustment often. To
check the cable adjustment, use the follow-
ing procedure:
0752-970
1. Remove the servomotor cable holder.
0752-969B
2. Rotate the servomotor actuator
counterclockwise to loosen the
cable; then pull the cable housing up
and out of the servomotor.
NOTE: For installing purposes,
note the side on which the servomo-
tor cable is installed.
3. Slide each cable drum out of the slot
of the servomotor actuator.
4. While holding the cable housing
firmly, pull the cable as far out as it
will go; then release. Repeat three to
four times. The cable/exhaust valve
should move freely without binding.
NOTE: If the cable/exhaust valve
does not move freely, the exhaust valve
assembly will need to be removed for
further inspection. Take the snowmo-
bile to an authorized Arctic Cat Snow-
mobile dealer for this service.
CAUTION
After operating the snowmobile for
the initial 5-10 minutes, stop the
engine, allow the engine to cool
down, and check the coolant level.
Add coolant as necessary.
CAUTION
If adjusting spark plug gap is neces-
sary, do not use the center electrode
as a leverage point. Damage to the
plug may occur.
