Assembling Engine (660 Cc Models) - Arctic Cat 660 cc Service Manual

26. Secure the air cleaner end cap to the air cleaner
housing with the wing nut.
Assembling Engine
(660 cc Models)
NOTE: During assembling, Plastigauge is used
to determine proper oil clearances.
NOTE: Arctic Cat recommends that new gaskets,
seals, and O-rings be installed whenever assem-
bling the engine.
1. With the upper crankcase half upside down on the
workbench, install the four upper crankcase-to-
lower crankcase dowel pins; then clean the bearing
surfaces and install the dry bearings into the upper
and lower crankcase halves.
NOTE: Make sure the tabs and the oil holes in
the bearings line up with the notches and oil pas-
sages in the upper and lower crankcase halves.
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2-46
GF314D
A002
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2. Lay the crankshaft into position and place a small
piece (about the width of the bearing) of
plastigauge onto all four journal surfaces of the
crankshaft. Install the lower crankcase half over
the crankshaft and onto the upper crankcase half.
3. Install the lower crankcase-to-upper crankcase
mounting cap screws; then using a crisscross
pattern, 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.
NOTE: Leave in the assembled condition for
three minutes. DO NOT rotate or move crankshaft.
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MD1471
MD1551A
MD1567
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