Polaris Outlaw 450 MXR LE Owner's Manual page 165

Maintenance
Chain Tension Adjustment
1. Loosen the two eccentric locking bolts.
NOTE:
Refer to the illustration on the following page.
2. Insert a pin punch into the eccentric axle housing.
3. Roll the vehicle slightly to adjust chain slack to the proper dimension.
4. Tighten the eccentric locking bolts to 35 ft. lbs. (47.5 Nm).
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