Snapper Mount Mower Lawn Mower User Manual


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FIGURE 4
STEP 10: HYDRAULIC SYSTEM, PURGING
When initially putting hydraulic system into
service, one or both of the wheel drives may not
pull properly. This is likely to be caused by air
entrapped in the system. If you experience a
pulling issue during initial setup or after completing
repairs, perform the following procedure to purge
the air from one or both of the hydraulic drive
systems.
IMPORTANT: WHEN REPLACING THE HYDRAULIC
FLUID FILTERS, PRE-FILL BOTH WITH OIL
(SAE 20W50 API SL) BEFORE INSTALLING.
PRE-FILLING THE FILTERS WITH OIL WILL
REDUCE OR POSSIBLY ELIMINATE THE NEED
TO PURGE THE SYSTEM OF ENTRAPPED AIR.
A. Locate hydraulic reservoirs underneath
operator’s seat. After thoroughly cleaning the area
around the top of each reservoir, remove filler cap.
Bring fluid to proper level (1-1/2” below the top of
the filler neck). With engine off, add SAE 20W50
automotive oil. See Figure 5.
B. Open pressure relief valve on hydraulic pump,
turning counter clockwise 2 full turns. See Figure
6.
C. Carefully raise the rear of the machine so the
wheels are off of the ground. Securely block the
machine to prevent it from falling.
D. While seated in the operator’s position, start the
engine. Place engine speed control in FAST
position.
E. Release parking brake and move motion
control levers out of the neutral lock position.
F. Slowly move motion control levers to the full
forward and then to the full reverse positions.
Repeat this process 6 times.
G. Stop engine and wait for all rotation to stop
before leaving the operator’s position.
H. Close pressure relief valve on hydraulic pump,
turning clockwise. Tighten snuggly.
I. With pressure relief valve closed, repeat Steps
D thru G.
J. Remove blocks and lower rear of machine.
K. Check fluid level in reservoirs. Add SAE 20W50
automotive oil as required to bring fluid level to 1-
1/2” from top of filler neck. Do Not overfill.
L. Install and tighten filler cap.
FIGURE 5
FIGURE 6
ADJUSTMENT
PLATE
LEFT SIDE MOTION
CONTROL LEVER
LOOSEN BOLTS.
SLIDE PLATE TO
MAKE MACHINE
TRACK STRAIGHT
ROTATE RELIEF VALVE
COUNTERCLOCKWISE
TO RELIEVE PRESSURE
RELIEF VALVE
HYDRAULIC
RESERVOIRS
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