REV B 4-10 117364
Pump replacement:
1. Raise the rear of the mower and block with certified jack
stands. The rear wheels need to be able to rotate freely
and clear of all obstructions.
2. Chock the front tires.
3. Raise the seat platform and disconnect the mower harness
from the seat switch. Bypass the seat switch by
connecting the two mower harness female spades
together.
NOTE: There are two different seat options available for
this mower. On one seat you will disconnect the mower
harness directly from the seat switch as shown in Figure
4-27. On the other seat you will disconnect the wire
harness from the two connectors as shown in Figure 4-28.
4. Before installing pump on machine, (either new or
rebuilt) fill pump case with fresh, clean oil by removing
case drain plug and add 6 - 8 oz. of 15W50 Mobil 1 oil,
then install the hose fitting. Figure 4-29
5. Install pump on machine and install lines.
6. Check reservoir for contamination, metal particles, dirt,
water, etc. and clean if necessary. Replace hydraulic filter
and fill reservoir with oil until it is just below the
reservoir neck.
7. Do not open tow valves.
8. Place the steering control levers in the neutral position.
9. Set engine throttle to the half throttle position.
10. Start engine. Run at idle for 30 seconds.
11. Stroke steering control lever to the forward position.
NOTE: If wheel motor does not rotate in 15 seconds,
return steering control lever to neutral and shut off
engine. Check hydraulic oil level and replenish if needed.
Repeat steps 8 through 11.
Figure 4-26
This procedure will require that the unit to be raised and
blocked up off of the ground. It is necessary for the
wheels to rotate without coming in contact with the floor
or any object that would permit the unit to propel itself.
Stay clear and exercise caution when rotating wheels to
prevent injury. Use only appropriate vehicle stands, with
a minimum weight rating of 2000 pounds to block the
unit up. Use in pairs only. Follow the instructions sup-
plied with the vehicle stands.
Untrained maintenance personnel should never attempt to
make any adjustments or repairs to the mower’s drive
system while the engine is running. The following proce-
dures should be performed by trained maintenance
personnel only.
RH Pump as viewed
from rear of mower
Bypass valve
(Tow valve)
Top of pump
Figure 4-27
Figure 4-28
Mower
harness
Seat
switch
Female
spades
Mower
harness
Female
spades
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