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REPLACING DRIVE BELTS
The blade drive consists of three belts—one main drive belt
and two wing belts. The main drive belt is tensioned by a
fixed idler with a spring adjustment. The wing belts have
spring-loaded idlers. All belts are very durable but after
many hours of use, the belt will show signs of wear. Signs of
a worn belt are: squealing when belt is rotating, blades slip-
ping when cutting grass, frayed edges, burn marks and
cracks. Replace any belt if any of these conditions are evi-
dent. Adjust belt tension on main belt after 10 hours of oper-
ation to assure maximum durability.
1.
Lower the cutting unit to the shop floor. Remove the
belt covers from the top of the cutting unit and set the
covers aside.
2.
Pull on the spring loaded idlers and remove the wing
belts.
3.
Loosen the fixed idler pulley locking nut.
4.
Loosen the spring tensioning nut as required and
remove the belt.
5.
Route new belts around the spindle pulleys and through
the idler pulley assemblies as shown in figure 15.
6.
Tighten the spring tensioning nut until the spring length
is 9.9 cm inside the spring loops(Fig. 14).
7.
Tighten the idler pulley locking nut.
8.
Pull on the spring loaded idlers and install wing belts.
9.
Install belt covers to top of the cutting unit.
SERVICING THE FRONT BUSHINGS
IN THE CASTOR FORKS
The castor forks have bushings pressed into the top and bot-
tom of the casting and after many hours of operation, the
bushings will wear. To check the bushings, move the castor
fork back and forth and from side to side. If the castor spin-
dle is loose around the bushings, the bushings are worn and
must be replaced.
1.
Start the tractor and raise the deck to the highest possi-
ble position and turn off the engine.
2.
Remove the front snapper pins from the castor arms and
slide the castor wheel assembly out of the castor arm
(Fig. 14–15)
(Fig. 16)
Figure 13
1.
Gear box mount
2.
Filler plug
3.
Check plug
Figure 14
1.
Idler pulley
2.
Spring tensioning nut
3.
Idler pulley locking nut
Figure 15
15
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