Arctic Cat 660 cc Service Manual page 52

2. There are paints on the cylinder block. The color
(red or blue) of each paint represents cylinder bore
diameter. The first paint from crank pulley side
represents inner diameter of No. 1 cylinder, the
second paint of No. 2 cylinder, and the third paint
of No. 3 cylinder.
3. Stamped number on piston and paint on cylinder
block should correspond.
Piston
Number Outer Diameter
at the
top
(mark)
1 67.98-67.99 mm
(2.6764-2.6768 in.)
2 67.97-67.98 mm
(2.6760-2.6764 in.)
CRANKSHAFT RUNOUT
1. Support the crankshaft using a set of V blocks; use
a dial indicator to read crankshaft runout.
Back
2-40
738-533A
AO345
Cylinder
Color Bore Diameter
(paint)
Red 68.01-68.02 mm
(2.6776-2.6780 in.)
Blue 68.00-68.01 mm
(2.6772-2.6776 in.)
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NOTE: The contact point of the dial indicator
should be on the center of each crankshaft journal.
2. Rotate the crankshaft slowly.
3. The reading must be within specifications or
crankshaft repairing/replacing will be necessary.
MEASURING CONNECTING ROD BIG
END SIDE CLEARANCE
1. Check big end of connecting rod for side clearance
with rod fitted and connected to its crank pin in the
normal manner.
2. Clearance measurement
specifications.
3. If measured clearance is found to exceed its limit,
replace connecting rod.
MEASURING CRANKSHAFT
JOURNALS (Bearing Surfaces)
1. Using a micrometer, measure each journal from
along its length and 180° from the first
measurement. Measurement must not exceed
specifications.
2. If any journal is badly damaged or has wear that
exceeds the specifications, the crankshaft must be
reground or replaced.
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AO348
must be within
0738-541
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