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TIGHTENING THE FAN BELT: Fan belts tend to
loosen after the first 50 hours of operation. If the fan
belts are loose, the engine can overheat and the bat-
tery can lose its charge. Check belt tightness by press-
ing on the belt midway between the pulleys. The belt
should deflect no more than 10 mm (0.375 in.). See
Figure D.6.
To adjust the fan belt, do the following:
1. See Figure D.6. Loosen the pivot fasteners of the
alternator (1) and the adjustment link fasteners (2).
2. Change the position of the alternator to give the cor-
rect tension. Tighten the pivot fasteners of the alter-
nator and the adjustment link fasteners.
3. Check the belt tension again to ensure that it is still
correct.
If a new belt is fitted, the belt tension must be checked
again after the first 25 hours of operation.
MAINTENANCE
D-8 D-8
SA-250
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FIGURE D.6 – TIGHTENING THE FAN BELT
1
2