Land Pride Razor Pro ZRP52 User Manual
Page 17
15
Section 3 Adjustments
7/14/08
ZRP44 & ZRP52 Zero Turning Radius Mowers 356-117M
Land Pride
Control Lever Neutral Adjustment
Refer to Figure 3-2
Before considering any adjustment, check the tire air
pressure and make certain hydraulic system oil is at
operating temperature. Unequal tire pressure will cause
the mower to drift to one side. Refer to “Tire Inflation
Chart” on page 19 and page 39.
Fine adjustment to the steering is made with the
adjustable pump linkage rods located between the control
lever and pump arms.
Steering Control Linkage
Figure 3-2
Neutral is properly adjusted when the control levers are in
the neutral position and the drive wheels are not turning.
If the mower creeps in the neutral position the control
linkage may be adjusted as follows:
1.
Raise and block the mower up so the drive wheels are
off of the floor.
!
WARNING!
Make certain mower is secure when it is raised and placed on
the jack stands. The jack stands should not allow the mower to
move when the engine is running and the drive wheels are
rotating. Use only certified jack stands.
2.
Position the control levers in the neutral position.
Disengage the blades.
3.
Start the engine and observe which way the wheels
are rotating.
4.
If wheel(s) are rotating forward, loosen the jam nuts on
the pump linkage rods and rotate the rod to lengthen
the steering control linkage until the wheel(s) come to
a stop. Repeat for the opposite side if necessary.
5.
If wheel(s) are rotating in reverse then loosen the jam
nuts on the pump linkage rods and rotate the rod to
shorten the steering control linkage until the wheel(s)
come to a stop. Repeat for the opposite side if
necessary.
6.
When both wheels remain in neutral, tighten the jam
nuts to lock the turnbuckle in place.
7.
Test again by moving the control levers forward and
backward before returning them to the neutral
position. If the tires are in neutral, the unit is now ready
for operation.
8.
After adjusting for neutral it may be necessary to
readjust the steering dampener and/or the control
lever stop. Fig. 5-3 or Fig. 5-4
Control lever stops
Refer to Figure 3-3
The control lever stops are designed to do two things:
First, and most important, they must keep the pumps from
bottoming out internally. Secondly, the stops may be
adjusted to help drive straight when the control levers are
pushed forward against the stops.
Figure 3-3
To keep the pumps from bottoming out internally use the
following procedure:
1.
To make the first adjustment the tractor engine must
NOT be running.
2.
Check to make sure the control levers are against the
stops before the pumps are bottomed out internally. To
do this, gently and slowly move the control levers
forward and feel if there is some resistance on the
pump lever before the control levers hit the stops.
Check one side at a time. If you sense that the pump
arms are stopping the forward motion of the control
arms, loosen the jam nut on the adjustable stop of the
corresponding side and turn the stop (set screw)
inward to stop the control levers slightly before the
pump bottoms out. Lock in place when the adjustment
is correct by re-tightening the jam nut.
Jam Nut
Pump Linkage Rod
20684
NOTE: The left linkage controls the right hydraulic
pump and the right linkage controls the left hydraulic
pump.
Jam Nut
Stop
Control Lever
21067