Arctic Cat 2014 M 2-STROKE Service Manual page 91

Check each of the above probable causes in the order
given to locate the problem of the servomotor cycling
three times in succession; then shutting down.
Check for correct exhaust valve cable length specifica-
tions for model being worked on in this section.
Servomotor Makes No Attempt To
Cycle
If when running the engine the servomotor makes no attempt
to operate, this is caused by one or more of the following:
A. Bad connection from the wiring harness and con-
nector from the lighting coil to the ECM, or from
the ECM to servomotor.
B. ECM output to servomotor is too low.
C. Servomotor failure.
D. Blown fuse.
E. Voltage Regulator/Rectifier.
 NOTE: For testing individual APV system compo-
nents, see the Electrical Systems section.
MAINTENANCE
The APV system requires only periodic cleaning and
cable adjustment. The cables should be checked every
2600 miles and adjusted as necessary.
CABLE ADJUSTMENT
Proper cable adjustment is critical to the operation of the
APV system. To check the cable adjustment, use the fol-
lowing procedure.
1. Using a small needle-nose pliers, remove the servo-
motor cable holder.
2. Pull the cable housings down and out of the servo-
motor; then slide each cable end out of the slot of the
pulley.
88
 NOTE: Ensure the exhaust valves are free to move.
3. 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. If the cable/exhaust
valve does not move freely, the exhaust valve assem-
bly will need to be removed for further inspection.
 NOTE: When measuring the cables, they are to be
routed and as close to their installed position as pos-
sible.
4. 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.
 NOTE: The two cable measurements must be equal
in length or less than 0.5 mm (0.020 in.) difference in
length from each other.
 NOTE: Repeat steps 3 and 4 for each cable; then
compare the measurements to the APV Cable Length
chart in the General Information section. The mea-
surements must be within the specifications from the
chart. If the measurements are within specifications,
no adjustment is necessary (proceed to step 7). If
they are not within specifications, proceed to step 5.
5. Loosen the jam nut on the cable to be adjusted; then
using the adjusting nuts, lengthen or shorten the
housing as needed.
6. Once the proper length has been attained, hold the
adjusting nut in place and tighten the jam nut
securely.
7. Insert the servomotor cable ends into the slot in the
PC187A
pulley. Secure the cables with the holder.
 NOTE: If the pulley was removed from the servomo-
tor, align the space between the two cable slots with
the mark on the shaft of the servomotor. Tighten the
nut to 35 in.-lb.
PC134