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1.
Park the machine on a level surface, lower the
cutting units, shut off the engine, engage the
parking brake, and remove the key.
2.
Insert the long end of the counterbalance spring
into a tube or similar object, and pivot the spring
around the shouldered stud to the desired
position
(Figure
51).
Figure 51
1. Spring
3.
Repeat steps
1
and
spring.
Adjusting the Lift-Arm
Turnaround Position
1.
Park the machine on a level surface, lower the
cutting units, shut off the engine, engage the
parking brake, and remove the key.
2.
The lift-arm switch is located underneath the
hydraulic tank and inboard of the cutting unit #5
lift arm
(Figure
29).
Figure 52
3.
Loosen the jam nut that secures lift-arm switch
to the switch plate
2. Shouldered stud
2
at the other counterbalance
(Figure
53).
1. Switch
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4.
Adjust the lift-arm switch as follows:
•
To increase the lift-arm turnaround height,
move the switch down.
•
To decrease the lift-arm turnaround height,
move the switch up.
Important:
2.5 mm (0.040 to 0.100 inches) between the
switch and the lift-arm trigger. The LED light
on the switch verifies proper function of the
switch.
5.
Tighten the jam nuts to 20 N∙m +/- 2 N∙m (15
+/- 1.5 ft-lb).
Important:
otherwise, you may damage the sensor.
Adjusting the
Turf-Compensation Spring
The turf-compensation spring
the weight from the front roller to the rear roller. This
helps to reduce a wave pattern in the turf, also known
as marcelling or bobbing.
Important:
Make spring adjustments with the
cutting unit mounted to the traction unit, pointing
straight ahead, and lowered to the shop floor.
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1.
Make sure that the hairpin is installed in the rear
hole in the spring rod
Note:
When servicing the cutting unit, move
the hairpin to the spring-rod hole next to the
turf-compensation spring.
35
Figure 53
2. Lift-arm sensing device
Maintain an air gap of 1.0 to
Do not overtighten the jam nuts;
(Figure
54) transfers
(Figure
54).
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