Servicing Center Crankcase Components - Arctic Cat ATV 250 Utility 2009 Service Manual

2. Remove the balancer shaft from the left crankcase
half.
AT THIS POINT
To service crankshaft assembly, see Servicing Center
Crankcase Components sub-section.
Servicing Center
Crankcase Components
NOTE: Whenever a part is worn excessively,
cracked, damaged in any way, or out of tolerance,
replacement is necessary.
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 mea-
sure it with micrometer.
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3-38
KM721
KM722
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2. Maximum diameter must not exceed specifications.
Measuring Connecting Rod
(Small End Deflection)
1. Place the crankshaft on a set of V-blocks and
mount a dial indicator and base on the surface
plate. Position the indicator contact point against
the center of the connecting rod small end journal.
2. Zero the indicator and push the small end of the
connecting rod away from the dial indicator.
3. Maximum deflection must not exceed specifications.
Measuring Connecting Rod
(Big End Side-to-Side)
1. Push the lower end of the connecting rod to one
side of the crankshaft journal.
2. Using a feeler gauge, measure the gap between the
connecting rod and crankshaft journal.
3. Acceptable gap range must be within specifications.
Measuring Crankshaft (Runout)
1. Place the crankshaft on a set of V blocks.
2. Mount a dial indicator and base on the surface
plate. Position the indicator contact at point 1 of
the crankshaft.
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CC290D
CC289D
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