31
NOTE: If the center electrode insu-
lators are light gray, white, or black
and if the oil-injection pump synchro-
nization and ignition timing are cor-
rect, different heat-range spark plugs
may be necessary. Authorized Arctic
Cat Snowmobile dealers have detailed
spark plug information. Consult a
dealer before changing spark plugs,
as incorrect heat-range spark plugs
could cause poor engine performance
or engine damage.
Checking/Adjusting
APV Cables
Proper cable adjustment is critical to the
operation of the APV system. Although
inspecting cable adjustment is recommended
every 1000-2000 miles, the cable should not
need adjustment often. To check the cable
adjustment, use the following procedure:
0745-819
1. Using a small needle-nose pliers,
remove the servomotor cable holder.
0745-823
2. Using an adjustable wrench, rotate
the servomotor actuator counter-
clockwise to loosen the cable; then
pull the cable housings down and
out of the servomotor.
NOTE: For installing purposes,
note the side that the servomotor
cables are installed on.
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.
NOTE: When measuring the cables,
they are to be routed as close to their
installed position as possible.
5. While holding the cable housing,
lightly pull on one cable end to remove
any slack; then measure the amount of
exposed cable from the cable housing
to the end of the cable (cable drum).
0735-516
NOTE: The two cable measure-
ments must be equal in length or
less than 0.5 mm (0.020 in.) differ-
ence in length from each other.
CAUTION
If a spark plug is light gray, white, or
black and another is tan or light
brown, take the snowmobile to an
authorized Arctic Cat Snowmobile
dealer for inspection and service. If
not under warranty, this service is at
the discretion and expense of the
snowmobile owner.
CAUTION
Do not use the nut securing the
clutch to the servomotor to rotate the
actuator.
APV CABLE LENGTH
6000/8000
36.5 mm ± 1 mm
