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If the machine pulls to the right, decrease the
speed for the left lever or increase the speed
for the right lever.
1. Adjustment screw
4.
Start the machine and drive forward across a
flat, level surface with the motion-control levers
fully forward to check if the machine tracks
straight. Repeat the procedure as needed.
Adjusting the Caster-Pivot
Bearings
122 cm (48 inch), 137 cm (54 inch),
and 152 cm (60 inch) Machines
Only
Service Interval: Every 500 hours/Yearly (whichever
comes first)
Note:
You do not need to adjust the caster-pivot
bearings for 91 cm (36 inch) machines.
1.
Park the machine on a level surface, disengage
the blade-control switch, and engage the parking
brake.
2.
Shut off the engine, remove the key, and wait
for all moving parts to stop before leaving the
operating position.
3.
Remove the dust cap from the caster and tighten
the locknut
(Figure
Figure 46
47).
4.
Tighten the locknut until the spring washers are
flat, and then back off a 1/4 turn to properly set
the preload on the bearings
Important:
washers are installed correctly as shown in
Figure
47.
5.
Install the dust cap
g299908
1. Spring washers
2. Locknut
Servicing the Caster
Wheels and Bearings
The caster wheels rotate on a roller bearing supported
by a spanner bushing. If the bearing is kept well
lubricated, wear will be minimal. Failure to keep the
bearing well lubricated causes rapid wear. A wobbly
caster wheel usually indicates a worn bearing.
1.
Remove the locknut and wheel bolt holding the
caster wheel to the caster fork
36
(Figure
Make sure that the spring
(Figure
47).
Figure 47
3. Dust cap
(Figure
47).
g001297
48).
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