Arctic Cat Sno Pro 120 Service Manual page 138

21. Remove the six nuts and two cap screws (A) from
outside the cylinder head; then remove the six cap
screws (B) from inside the cylinder head. Remove
the head and account the gasket and two dowel pins.
 NOTE: If removing the oil cooler, remove the union
bolt securing the cooler to the engine; then remove
the oil cooler and account for a washer and an O-ring.
22. Remove the Allen-head cap screws (A) securing the
front and back timing chain tension guides to the
engine; then remove the guides and account for the
timing chain and the washers located between the
tension guides and engine.
2-118
ZJ051B
23. Remove the fourteen cap screws securing the oil pan
to the engine; then remove the oil pan and note the
location of the different-length cap screws for assem-
bling purposes.
24. Tip the engine upside down; then remove the 28 cap
screws securing the upper and lower crankcase
halves. Using a soft hammer, gently tap around the
bottom half until it separates.
 NOTE: Note the location of the different-length cap
screws for assembling purposes.
DO NOT drive any tool between halves to separate the
crankcase. Damage to the sealing surfaces will result.
25. After separating the crankcase halves, account for
two O-rings and three dowel pins.
741-617B
26. For easier access to components, rotate the crank-
shaft to the bottom-dead-center position (connecting
rod caps straight up).
27. Remove the front and rear crank balancers from the
engine and account for the two end seals.
ZJ040
28. On each connecting rod, remove the two connecting
rod cap screws; then remove the connecting rod cap.
Account for the two connecting rod bearings.
CAUTION
ZJ041A
ZJ043