Arctic Cat Sno Pro 120 2011, Service Manual

Page: 107 / 535

2-69
2
7. Lubricate the inner lips of the crankshaft oil seals
with grease; then slide the seals (and rubber spacer
on the 600 cc) onto the crankshaft making sure the
spring side of each seal faces the center of the crank-
shaft.
8. Apply oil to the crankshaft bearings; then install the
crankshaft into the upper crankcase half. Be sure the
alignment hole in each bearing is positioned over its
respective dowel pin in the crankcase; then seat the
crankshaft.
CM045A

NOTE: To check the bearing for proper position,
place the point of a sharp tool into the dimple found
in the bearing race. Strike the tool with the palm of
the hand in either direction. If the bearing moves, it
isn’t positioned correctly and must be rotated until it
drops onto the dowel pin.
9. Position the two center seal rings with their end gaps
180° apart (up on one and down on the other); then
apply a thin coat of High-Temp Sealant to the entire
bottom half of the crankcase sealing surface.
CM036A

NOTE: At this point if the coolant temperature sen-
sor was removed, install the sensor (threads coated
with white Loctite #575) and tighten to 18 ft-lb.
FC071

NOTE: Use only Arctic Cat High-Temp Sealant to
seal the crankcase halves.
10. Assemble the crankcase halves making sure the
crankshaft gear and oil-injection pump driveshaft
gears mesh. Rotate the crankshaft one full turn to
align the crankshaft gear and pump driveshaft.
11. Install the crankcase cap screws securing the crank-
case halves.
12. Tighten the 6 mm cap screws to 96 in.-lb and the ten
10 mm cap screws in two steps from 13 ft-lb to 37 ft-
lb on the 500 cc or from 13 ft-lb to 31 ft-lb on the
600 cc using the appropriate pattern shown.
0738-201

NOTE: On the 500 cc after tightening the crankcase,
turn the engine right side up and tighten the four
MAG-housing cap screws in a crisscross pattern to
18 ft-lb.
738-202A
CAUTION
If the bearings are not properly seated during assembly,
the crankcase halves will not seal tightly and severe
engine damage will result.
500 cc
600 cc
Manual
Table of Contents