Arctic Cat Sno Pro 500 Operator's Manual page 51

Crankshaft
NOTE: If any servicing of the connecting rods,
center bearings, or oil-injection pump drive gear is
necessary, Arctic Cat recommends that the crank-
shaft be taken to a qualified machine shop for that
service.
1. Wash the crankshaft with bearings in parts-clean-
ing solvent.
2. Inspect the bearings for wear, scoring, scuffing,
damage, or discoloration. Rotate the bearings.
Bearings must rotate freely and must not bind or
feel rough. If any abnormal condition is noted,
replace the bearing.
3. Inspect the connecting-rod bearings by rotating
them. The bearings must rotate freely and must not
bind or feel rough. If a connecting-rod bearing
must be replaced, the connecting rod and crank pin
must also be replaced.
4. Inspect the oil-injection pump drive gear for any
signs of worn or chipped teeth. If either condition
exists, replace the gear.
NOTE: Lubricate bearings thoroughly prior to
assembly.
Removing/installing Outer
Crankshaft Bearings
NOTE: The end bearings are not pressed onto
the crankshaft. The bearings can be removed sim-
ply by sliding them off the crankshaft.
Inspect the crankshaft bearing area for wear. If any
wear is noted on either end, replace the crankshaft end.
NOTE: Install the bearings by sliding each bear-
ing onto the crankshaft making sure the dowel-pin
hole in the outer race is properly positioned and
will align with its hole and pin in the crankcase.
FC039
Reed Valve Assembly
1. Inspect the reed valves, stoppers, and valve blocks
for cracks or any deterioration.
FC040
2. Wash the reed valves, stopper, and cage assembly
in parts-cleaning solvent and blow dry.
CM161
CM161
CM162
45