Service Manual

20 P Series
RETURN TO NEUTRAL SETTING
WARNING
POTENTIAL FOR SERIOUS INJURY
Inattention to proper safety, operation, or
maintenance procedures could result in
personal injury, or damage to the equip-
ment. Before servicing or repairing the P
Series Pump, fully read and understand
the safety precautions described in this
manual.
The return to neutral mechanism on the pump is
designed to set the directional control into a neutral
position when the operator releases the vehicle
hand control. Follow the procedures below to
properly adjust the return to neutral mechanism on
the pump:
1. Conrm the pump is in the operating mode
(bypass disengaged). Raise the vehicle’s drive
tires off the ground to allow free rotation.
2. Remove the Original Equipment Manufacturer’s
(OEM’s) control linkage at the control arm.
3. Start the engine and increase the throttle to full
engine speed.
WARNING
Do not attempt any servicing or ad-
justments with the engine running.
Use extreme caution while inspecting
the drive belt assembly and all vehicle
linkage!
Follow all safety procedures outlined in
the vehicle owner’s manual.
4. Check for axle rotation. If the axle does not
rotate, go to Step 5. If the axle rotates, go to
Step 6.
5. Stop the vehicle’s engine. Reattach and adjust
the vehicle’s linkage according to the vehicle
owner’s manual.
6. Note the axle directional movement. Stop the ve-
hicle engine. Loosen the RTN adjustment screw
until the control arm can be rotated. Rotate the
control arm in the proper direction until neutral is
obtained (motor shaft does not rotate). Tighten
the RTN adjustment screw. Recheck according
to steps 3 and 4. Refer to Figure 12.
Figure 17. P Series Pump RTN Adjustment
RTN Adjusting Screw
Speed & Direction
Control Arm