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Note: Make sure that the brake-shaft sensor does not
contact the switch plunger.
5. Secure the switch jam nuts.
6. Test the adjustment as follows:
A. Ensure that the parking brake is engaged and you
are not sitting on the seat, then start the engine.
B. Move the control levers out of the neutral locked
position.
The engine should stop. If not, recheck the
adjustment you made to the switch.
7. Install the front panel.
Belt Maintenance
Checking the Alternator Belt
Service Interval: Every 100 hours
Check the condition and tension of the belts (Figure 77) after
every 100 operating hours.
1. Proper tension will allow 10 mm (3/8 inch) deflection
when a force of 44 N (10 lb.) is applied on the belt
midway between the pulleys.
2. If the deflection is not 10 mm (3/8 inch), loosen the
alternator mounting bolts (Figure 77). Increase or
decrease the alternator belt tension and tighten the
bolts. Check the deflection of the belt again to ensure
that the tension is correct.
1. Mounting bolt
Replacing the Blade Drive
Belts
Service Interval: Every 50 hours
The blade drive belts, tensioned by the spring loaded idler
pulleys, are very durable. However, after many hours of use,
the belts will show signs of wear. Signs of a worn belt are:
squealing when belt is rotating, blades slipping when cutting
grass, frayed edges, burn marks and cracks. Replace the belts
if any of these conditions are evident.
1. Lower the cutting unit to the 1 inch height-of-cut
setting, move the throttle lever to the Slow position,
stop the engine, set the parking brake, and remove the
ignition key.
2. Remove the belt covers from the top of the cutting unit
and set the covers aside.
3. Using a breaker bar or similar tool, move the idler
pulley for the top belt (Figure 78) away from the top
55
Figure 77
2. Alternator
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