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JACOBSEN AR3
SAFETY, OPERATORS & MAINTENANCE MANUAL
9.1 TRACTION CONTROL PEDAL
Adjustment to eliminate wheel creep.
1. Lift and support both front and rear wheels.
2. Remove ball joint A from foot pedal C to
allow damper B to set pedal neutral
position.
3. Start engine, manually move the pump
control lever D until wheels stop rotating.
4. Adjust ball joint A until holes in foot pedal
and ball joint align.
5. Reattach ball joint to foot pedal.
6. Move the foot pedal in forward & reverse
directions to ensure there is no creep in
neutral position.
9.2 WEIGHT TRANSFER ADJUSTMENT
The weight transfer bias can be adjusted on the lift
valve. The valve is accessible from the front of the
machine and is situated under the right hand side of
the footplate when facing the machine (left hand side
when viewed from the operating position).
To adjust:
1. Loosen the locknut A whilst holding the
threaded shaft still with the Allen Key B.
2. Using an Allen key B rotate the threaded
shaft clockwise in direction D to increase
weight onto the drive wheels when the
traction control switch is operated on the
control panel. This improves slope climbing
performance. To reduce weight on the
drive wheels when the traction control
switch is operated on the control panel,
rotate the threaded shaft counter clockwise
in direction C. This increases the ground
weight of the cutting unit and will reduce the
possibility of cutting unit “bounce” when
working at high speed on undulating
ground. It is recommended that the Allen
key is turned a 1/4 turn at a time and the
weight transfer tested.
3. Tighten locknut A. whilst holding the
threaded shaft still with the Allen Key B.
9 ADJUSTMENTS
WARNING
Properly support raised machinery with
jack stands.
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