Crankshaft End Play Adjustment - Polaris Sportsman 400 Service Manual

ENGINE
END PLAY INSPECTION/ADJUSTMENT
Before reassembling the crankcase,the following steps should be performed to determine the amount of crank-
shaft, counter balancer shaft, and pump shaft end play. Excessive end play may cause engine noise at idle and
slow speeds. Too little play will side load the bearings which may lead to premature bearing failure.

CRANKSHAFT END PLAY ADJUSTMENT

1. Make sure all bearings are firmly seated in the
both Mag and PTO crankcase.
2. Measure the distance from the PTO crankcase
mating surface to the main bearing using a dial
caliper and a straight edge.
3. Subtract the thickness of the straightedge from
the measurement obtained in Step 2 and record.
PTO Case Depth
3.56
- projex@inbox.lv -