Arctic Cat Sno Pro 120, Service Manual

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741-584A

NOTE: Prior to installing the oil pan, ensure the oil
strainer is cleaned thoroughly.
ZJ078A

NOTE: If the oil pan drain plug was removed, always
install new drain plug and reservoir washers.

NOTE: Rotate the engine to the upright position;
then, if applicable, remove the cap screw and washer
securing the pistons in the cylinder.
27. Install the cam chain onto the sprocket on the crank-
shaft and route the chain up through the engine case;
then install the front-side cam chain guide number
one properly seating it into the groove in the engine
case.
ZJ079A

NOTE: Prior to installing the cam chain tensioner,
assure the chain is properly seated to the gear on the
crankshaft.
28. Install the cam chain tensioner; then install the wash-
ers between the engine case and guide/tensioner and
secure with two Allen-head cap screws (coated with
blue loctite #243). Tighten to 84 in.-lb.
ZJ080
29. Position the pistons at the top-dead-center position
by rotating the crankshaft until the keyway on the
crankshaft is directed upward and aligned with the
cylinder.
ZJ081A
30. Install the alignment pins into the top of the engine;
then install the new head gasket.
ZJ102A
31. With the head gasket and dowel pins in place, install
the cylinder head by carefully tilting the head to the
front side of the engine allowing the cam chain guide
to slide into the passage in the cylinder head; then
work the head back and forth until the head is prop-
erly seated to the engine.
CAUTION
Make sure the oil-port hole of the head gasket is unre-
stricted or severe engine damage may occur.