ENGINE
4234520 First Edition 3-7
3
Repair
Fan Belt
Removal and Installation
See Figures 3-8 and 3-9.
Inspect and adjust the new engine belt after the first 50
hours of operation. Check and adjust annually thereafter.
1. Park the mower safely. (See “Park Mower Safely” on
page 1-6.)
2. Raise the hood.
3. Disconnect the battery negative (–) cable at the
battery.
Figure 3-8
4. Loosen screws (2 and 4) and push the alternator (3)
toward the engine to loosen the belt (1).
Figure 3-9
5. Remove the fan belt (1) from the alternator (3),
coolant pump (6), and crankshaft pulley (5).
Installation Note
Install the fan drive belt by reversing the order of removal.
6. Adjust the belt tension by loosening the alternator
mounting screws (2 and 4) and pulling the alternator
(3) against the belt (1) until the proper tension is
achieved.
7. Measure the belt tension at the midpoint between
pulleys. Adjust the alternator belt to 0.28 to 0.35 in.
(7 to 9 mm) deflection with a tension of 22 lb (98 N).
See the engine manufacturer’s manual for further
information.
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