Arctic Cat 2004 650, Service Manual

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KX297
Servicing Center
Crankcase Components
CRANKSHAFT ASSEMBLY
Measuring Connecting Rod
(Small End Inside Diameter)
1. Insert a snap gauge into the upper connecting rod
small end bore; then remove the gauge and
measure it with micrometer.
CC290D
2. Maximum diameter must not exceed
specifications.
„
NOTE: Always tighten connecting rod cap nuts
to the specified torque value before making any
measurements.
3. Measure the connecting rod big end insert to crank
pin clearance using plastigauge. Check the
clearance (A) by reading the width (B) with the
gauge provided. Clearance must be within
specifications. Do not move the connecting rod
with the plastigauge installed.
ATV2072
4. Measure the crank pin diameter (A) and check the
crankshaft marking (B). If no mark is on the
crankshaft, the crank pin diameter should be
39.984-39.992 mm (1.5742-1.5745 in.). If the
crankshaft is marked with “O,” crank pin diameter
should be 39.993-40.000 mm (1.5745-1.5748 in.).
„
NOTE: If the crank pin diameter does not coin-
cide with the marking, make a new mark.
ATV2073
5. Measure the connecting rod big end inside
diameter; then check the mark (A) to see if the
measurement coincides with the mark. If there is
no mark on the connecting rod, the big end inside
diameter should be 43.000-43.016 mm
(1.6929-1.6935 in.). If there is an “O,” the big end
inside diameter should be 43.009-43.016 mm
(1.6933-1.6935 in.).
ATV2074
6. Place the crankshaft on a set of V blocks; then
mount a dial indicator and base on the surface
plate.