Arctic Cat Sno Pro 120 Service Manual page 137

 NOTE: If cleaning or replacing the cylinder head
cover is necessary, the cam position sensor must be
removed.
17. Obtain top-dead-center by rotating the crankshaft
until the arrows on the intake camshaft face (A) are
in the 12 o'clock and 9 o'clock positions and the
arrows on the exhaust camshaft face (B) are in the 12
o'clock and 3 o'clock positions.
 NOTE: At this point if the technician's objective is to
service the valves, see Servicing Components -
Valves in this sub-section.
18. Loosen but do not remove the tension adjuster bolt
and washer (A) from the chain tensioner assembly.
Remove the two cap screws (B) securing the assem-
bly to the engine. Remove the assembly.
ZJ049B
19. Remove the cap screws securing the camshaft covers
to the cylinder head; then remove the covers.
Remove both camshafts. Account for the dowel pins.
ZJ037A
20. Using a magnet or needle-nose pliers, carefully
remove the tappets (A) from the cylinder head and
account for the shims (B).
741-593A
When removing the tappets, note the location of the tap-
pet, the valve from which the tappet was removed, and
the shim number of the tappet or severe engine damage
may occur.
CAUTION
ZJ038A
2
741-624A
ZJ083B
2-117