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Note: Belt tension and alignment are inter-related. Do not adjust one without checking the
other.
1. Remove belt guard.
2. Loosen (4) engine base (mount) bolts.
3. Loosen lock nuts on tension bolt and alignment bolt.
4. Turn tension bolt clockwise to increase belt tension and counter-clockwise to decrease belt
tension.
5. Check that the pulleys are aligned using a straight edge. To achieve proper pulley alignment
you may need to adjust the alignment bolt. This bolt will serve as an adjustment point to
counter the tension in the belts, which may cause the engine pulley to be misaligned with
the cutter wheel pulley.
6. When belt tension is proper; 11 to 14 ft/lbs of tension, or 3/16" deflection and pulleys are
aligned, retighten all loosened nuts and bolts.
7. Reassemble belt guard.
Alignment bolt
Note: New belts require a "break-in" period of approximately 10 hours. Readjustment may be
necessary after "break-in."
Note: Use only factory recommended belts. Contact your NorthStar dealer.
Maintenance & Repair (cont'd)
Belt Tension Adjustment
Lock nut
Tension bolt
20
Lock nut
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