JT520 Operator’s Manual Service - 129
50 Hour
CMW
Check and Adjust Fan Belt Tension
Check belt tension every 50 hours. Belt is properly
tensioned when it moves about 1/4-3/8” (7-9 mm)
when pushed at the long span.
1. Loosen two alternator bolts (shown).
2. Adjust position as needed.
3. Tighten bolts.
4. Check tension.
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