Assembling Crankcase Half - Arctic Cat 300 Utility Service Manual

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 con-
necting 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 crank-
shaft.
3. Zero the indicator and rotate the crankshaft slowly.
CAUTION
Care should be taken to support the connecting rod
when rotating the crankshaft.
4. Maximum runout must not exceed specifications.
66

NOTE: Proceed to check runout on the other end of
the crankshaft by positioning the indicator contact at
point 2 and following steps 3-4.
Measuring Crankshaft (Web-to-
Web)
1. Using a calipers, measure the distance from the out-
side edge of one web to the outside edge of the other
web.
2. Acceptable width range must be within specifica-
tions.
CRANK BALANCER SHAFT
Inspecting
Inspect the gear teeth and bearing surfaces for chips, dis-
coloration, or excessive wear.
CC289D
Assembling Crankcase

NOTE: For ease of assembling, install components
on the left-side crankcase half.
ATV-1074
To assemble center crankcase components, install the
balancer shaft into the left-side crankcase half; then align
the timing mark on the balancer shaft with the timing
mark on the crankshaft. Install the crankshaft.
ATV-1017
Half
KM724