Assembling - Arctic Cat Sno Pro 120 2013 Service Manual

CRANKSHAFT BEARINGS
Removing
1. Using a flat-blade screwdriver, carefully work the
oil seal from side-to-side out of the crankcase and
cover.
2. Using a suitable press and with the crankcase or
crankcase cover secured into position, carefully
heat the case; then press the bearings out of the
case.
CAUTION
Never reuse the crankshaft bearings. If the bearings
have been pressed out of the crankcase or crankcase
cover, they must be discarded.
 NOTE: Thoroughly clean the bearing areas of the
crankcase and crankcase cover and inspect for any
nicks or imperfections of the bearing bosses of the
case.
Installing
1. Secure the crankcase and press the new bearing
into the boss of the crankcase and crankcase cover.
CAUTION
When installing the new bearings, always press
against the outside race of the bearing.
2. With the bearings installed and using a suitable
seal driver, install the oil seals with the spring side
of the seal facing the bearing; then coat the wear
surfaces of the seals with a film of grease.
18
CARBURETOR INSULATOR PLATE
1. Inspect for cracks, scoring, pitting, imperfections,
or warping.
2. Inspect the sealing surfaces for trueness by placing
each on the surface plate covered with #400 grit
wet-or-dry sandpaper. Using light pressure, move
both sides in a figure eight motion. Inspect the
sealing surfaces for any indication of high spots or
warping. Correct highs spots by continuing to
move each side in a figure eight motion. Warped
components must be replaced.
GEN-0039
Water or parts-cleaning solvent must be used in con-
0744-992
junction with the wet-or-dry sandpaper or damage to
the sealing surfaces may result.
 NOTE: The use of new gaskets and seals is recom-
mended when assembling the engine.
 NOTE: Prior to assembling the engine, use parts
cleaning solvent and compressed air and thoroughly
clean the threaded holes of the crankcase and cylinder
and head to properly tighten.
Always wear safety glasses when drying components
with compressed air.
 NOTE: When the use of a lubrication is indicated, use
clean engine oil.
1. Lubricate the piston pin, connecting rod, and pis-
ton pin bore with engine oil; then install the piston
to the connecting rod and secure the piston pin
with the circlips directed either up or down.
CAUTION

Assembling

! WARNING
A932