Ditch Witch FM25 - Manual (Page 57)

Service - 56
FM25 Operator’s Manual
As Needed
CMW
As Needed
Adjust Fan Belt
Adjust fan belt as needed.
1. Turn off engine and remove key.
2. Apply moderate thumb pressure to belt
between pulleys where shown.
Belt is properly tensioned when deflection is
about 1/4-3/8” (7-9 mm).
3. If needed, loosen alternator bolts (shown) and
pull alternator out until correct tension is
reached.
Adjust Pump Drive Belt
Adjust pump drive belt as needed.
1. Loosen two bolts (1, other bolt is on other side
of pump mount plate) until pump slides freely.
2. Adjust bolt (2) to increase or decrease tension.
When washer is aligned with cutout and
dimension A (shown) is 3/4” (19 mm), tension
is correct.
3. Once tension is set, tighten bolts.
Location Task Notes
Adjust fan belt
Adjust pump drive belt