Shutting Off the Engine
1.
Move all controls to N
EUTRAL
, engage the parking
brake, move the engine-speed switch to the low idle
position and allow the engine to reach low idle speed.
2.
Turn the key to the O
FF
position and remove it from
the switch.
Cutting Grass with the Machine
Note:
Cutting grass at a rate that loads the engine
promotes DPF regeneration.
1.
Move the machine to the job site and align the
machine outside the cutting area for the first cutting
pass.
2.
Ensure that the PTO switch is set to the
DISABLE
position.
3.
Move the lever for the mow-speed limiter forward.
4.
Press the throttle-speed switch to set the engine
speed to
HIGH IDLE
.
5.
Use the joystick to lower the cutting units to the
ground.
6.
Press the PTO switch to prepare cutting units for
operation.
7.
Use the joystick to raise the cutting units off the
ground.
8.
Begin moving the machine toward the cutting area
and lower the cutting units.
Note:
Cutting grass at a rate that loads the engine
promotes DPF regeneration.
9.
When you complete the mowing pass, use the joystick
to lift the cutting units.
10.
Perform a tear-shaped turn to quickly line up for your
next pass.
Adjusting the Turf-Compensation
Spring
The turf-compensation spring (
) transfers 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.
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.
g003863
Figure 51
1.
Turf-compensation spring
3.
Spring rod
2.
Hairpin
4.
Hex nuts
2.
Tighten the hex nuts on the front end of the spring rod
until the compressed length of the spring is 15.9 cm
(6.25 inches); refer to
.
Note:
When operating on rough terrain decrease the
spring length by 13 mm (1/2 inch). Ground following
will be slightly decreased.
Note:
The turf compensation setting will need to be
reset if the HOC setting or the Aggressiveness of Cut
setting is changed.
Adjusting the Lift-Arm Counterbalance
Rear Cutting Units
CAUTION
The springs are under tension and could cause
personal injury.
Use caution when adjusting the springs.
You can adjust the amount of counterbalance force applied
to the rear cutting-units to help compensate for different turf
conditions, and to maintain a uniform height of cut in rough
conditions or in areas of thatch buildup.
You adjust counterbalance force of each torsion spring to 1
of 4 settings. Each increment increases or decreases the
counterbalance force on the cutting unit by 2.3 kg (5 lb). You
can position the springs at the back side of the first spring
actuator to remove all counterbalance (fourth position).
Note:
To remove all counterbalance force, position the
long leg of the torsion spring above the shouldered stud.
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 (
33
