Arctic Cat 660 cc, Service Manual

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AO320A
AO321
10. Coat the lower crankcase half sealing surface with
Sealant (p/n 1048-044); then set it over the
crankshaft.
„
NOTE: Take care not to get sealant on the bear-
ing surfaces or journals.
„
NOTE: Mate the crankcase halves within 10 min-
utes of applying the sealant to ensure the sealant
does not dry before it can seal.
11. Install the lower crankcase-to-upper crankcase
mounting cap screws; then tighten them in two
steps to 4.0 kg-m (29 ft-lb) for step one and 5.8 kg-
m (42 ft-lb) for step two for the 10 mm cap screws
and 1.7 kg-m (12 ft-lb) for step one and 2.4 kg-m
(17 ft-lb) for step two for the 8 mm cap screws.
MD1573
0738-513
12. Install one piston pin circlip into one of the pistons
making sure the open end is directed either up or
down. Place the connecting rod in position with
the arrows on the rod cap and piston dome aligned.
Install the piston pin and piston pin circlip making
sure the open end is directed either up or down.
Repeat for the other piston/connecting rod
assemblies.
AO322A
13. Install a thin oil ring, oil ring expander, and thin
oil ring in the bottom groove of the piston.
MD1668B
14. Stagger the end gaps of the upper and lower thin
oil rings until they are on directly opposite sides of
the piston.