32
2. Grease the fittings on the three spindle bearings
(Fig. 39).
3. Grease the idler pulley pivot (Fig. 39).
4. Grease the fittings on the push arms (Fig. 39).
M–4269
1
Figure 39
Where to Add Light Oil or Spray
Lubrication
Lubricate the machine in the following areas with spray
type lubricant or light oil. Lubricate every 160 hours.
• Seat switch actuator.
• Brake handle pivot.
• Brake rod bushings.
• Motion control bronze bushings.
Checking the Tire Pressure
Maintain the air pressure in the front and rear tires as
specified. Uneven tire pressure can cause uneven cut.
Check the pressure at the valve stem after every
50 operating hours or monthly, whichever occurs first
(Fig. 40). Check the tires when they are cold to get the
most accurate pressure reading.
Pressure: 13 psi (90 kPa) drive wheels and caster wheels.
1
m–1872
Figure 40
1. Valve stem
Adjusting the Wheel Hub
Slotted Nut
Check after every 500 operating hours.
The slotted nut needs to be torqued to 125 ft-lb
(170 N m).
1. Stop the engine, set the parking brake, remove the key
and disconnect the spark plug wire(s) from the spark
plug(s).
2. Remove cotter pin.
3. Torque slotted nut to 125 ft-lb (170 N m) (Fig. 41).
4. Check the distance from bottom of slot in nut to inside
edge of hole. Two threads or less should be showing
(Fig. 41).
5. If more than two threads are showing remove nut and
install washer between hub and nut (Fig. 41).
6. Torque the slotted nut to 125 ft-lb (170 N m) (Fig. 41).
7. Tighten nut until the next set of slots line up with the
hole in the shaft (Fig. 41).
8. Replace cotter pin.
3
m–4638
1
2
4
Figure 41
1. Slotted nut
2. Two threads or less
showing
3. Hole in threaded rod
4. Washer (if needed)
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