Arctic Cat Sno Pro 120, Service Manual

Page: 37 / 470

2-17
2
29. Connect the air temperature sensor and place the sen-
sor harness beneath the air-intake duct; then install
the duct into the silencer.

NOTE: To aid in installing the duct, apply a thin film
of WD-40 to the air silencer seal and to work the duct
back and forth until the sleeve of the duct is properly
seated into the silencer.
30. Secure the air-intake duct to the upper frame with the
cap screw. Tighten securely.
31. Using the illustration following step 27, secure the
left-side rear spar panel to the gas tank and support
tube with the three torx-head screws (D). Tighten the
screws securely.
32. Install the seat; then install the machine screw
(threads coated with blue Loctite #243) to the right
side of the seat support.
33. Fill the cooling system (see Liquid Cooling System
in Section 3).
34. Place the rubber exhaust bumper into position on the
chassis.
FS203A
35. Secure the negative battery cable to the battery.
36. Install the exhaust resonator and secure to the upper
frame with the tab washer and the hairpin clip.
37. Place gaskets on the resonator and exhaust manifold;
then install the expansion chamber. Secure the cham-
ber to manifold and upper frame with the springs.

NOTE: When installing the exhaust manifold
springs, the long hook portion of the spring must be
attached to the exhaust manifold or premature spring
failure will result.
38. Place the console into position on the headlight sup-
port bracket (do not secure the console with the torx-
head screws at this time); then connect the console/
main harness plug-in.
39. Install and close the left-side and right-side access
panels and the hood.
40. Start the engine and warm up to operating tempera-
ture; then verify that all components are functioning
properly and that coolant is circulating through the
cooling system properly.
41. Allow the engine to cool; then check the coolant
level and add coolant as necessary.
42. Verify the tightening torque of the drive clutch.
43. Secure the console to the steering support with the
torx-head screws (from step 38) and tighten the
screws securely; then close the left-side and right-
side access panels and close the hood.
0743-777
CAUTION
Make sure to place the sensor harness beneath the air-
intake duct to avoid contact with exhaust components.
CAUTION
Do not tighten the machine screw against the seat sup-
port. The screw must be loose enough to be effective as
a seat “stop.”
CAUTION
Never run the engine with the console harness discon-
nected or damage to the electrical system will result.
CAUTION
After running the engine to the proper operating temper-
ature, shut the engine off; then open the hood and
access panels and inspect for any signs of coolant, gas-
oline, or oil leakage.
CAUTION
If the engine had a major overhaul or if any major com-
ponent was replaced, proper engine break-in proce-
dures must be followed (see Section 1). If the proper
engine break-in procedures are not followed, severe
engine damage may result.