Snowmobile Arctic Cat (2002 year). Manual - part 20
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0725-586
PISTON SKIRT/CYLINDER CLEARANCE
1. Measure each cylinder front to back about 2.5 cm
(1 in.) from the bottom of each cylinder.
2. Measure the corresponding piston skirt diameter at
a point 1 cm (0.394 in.) above the piston skirt at a
right angle to the piston-pin bore. Subtract this
measurement from the measurement in step 1. The
difference (clearance) must be within
specifications.
AC091
PISTON-RING END GAP
1. Place each piston ring in the wear portion above
the exhaust port of its respective cylinder. Use the
piston to position each ring squarely in each
cylinder.
2. Using a feeler gauge, measure each piston-ring
end gap. Acceptable ring end gap must be within
specifications.
AN057
PISTON PIN AND PISTON-PIN BORE
1. Measure the piston pin diameter at each end and in
the center. Acceptable piston pin measurement
must be within specifications. If any measurement
varies by more than 0.02 mm (0.001 in.), the
piston pin and bearing must be replaced as a set.
AN056
2. Insert a snap gauge into each piston-pin bore; then
remove the gauge and measure it with a
micrometer. The diameter measurement must be
within specifications. Take two measurements to
ensure accuracy.
AC092
CONNECTING-ROD SMALL END BORE
1. Insert a snap gauge into each connecting-rod small
end bore; then remove the gauge and measure it
with a micrometer.
CYLINDER TRUENESS LIMIT (max)
mm
in.
0.10
0.004