Scag Power Equipment FREEDOM Z SFZ48-26BS - Manual (Page 33)

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Section 7
DUMP VALVE
CONTROL LEVER
"FREEWHEEL" POSITION
"DRIVE" POSITION
2007 SFZ DVL
Dump Valve Control Lever Figure 7-5.
While in the operator's position, start the engine and 12.
disengage the parking brake.
Run the engine at 1/2 throttle and move the steering 13.
control levers to full forward and reverse 5 to 6 times.
Engage the parking brake. Move the dump valve 14.
comtrol levers to the "drive" position. See Figure 7-5.
While in the operator's position, run the engine at 15.
1/2 throttle. Release the parking brake, move the
steering control levers to full forward and reverse 5
to 6 times. It may be necessary to repeat steps 12 to
15 until the air is completely purged from the system.
Check the hydraulic system oil level as explained in 16.
Section 7.2.
ENGINE OIL 7.3
A. CHECKING ENGINE CRANKCASE OIL LEvEL
The engine oil level should be checked after every 8 hours
of operation or daily as instructed in the Engine Operator’s
Manual furnished with this mower.
B. CHANGING ENGINE CRANKCASE OIL
After the first 20 hours of operation, change the engine
crankcase oil and replace the oil filter. Thereafter,
change the engine crankcase oil after every 100 hours
of operation or bi-weekly, whichever occurs first. Refer to
the Engine Operator’s Manual furnished with this mower
for instructions.
Remove the top port plug from both axles before 7.
filling with oil. See Figure 7-4.
REMOVE TOP
PORT PLUG
top Port Plug Location Figure 7-4.
Fill the hydraulic expansion reservoir with 20w50 8.
motor oil until the oil just appears at the bottom of
each axle top port. Approximately 5 quart capacity.
Reinstall the top port plugs and torque to 180 in/lbs.
-Note-
The left side axle will fill with oil first using
approximately 4 quarts of oil. Reinstall the top port
plug in the left axle and continue to fill the hydraulic
system through the expansion reservoir. The right
side axle should fill up to the bottom on the top
port plug after adding an additional one quart of
oil. Reinstall the top port plug on the right axle and
fill the hydraulic expansion reservoir to the proper
level as explained in Section 7.2.
Reinstall the hydraulic expansion reservoir cap. 9.
The hydraulic system will need to be purged of 10.
all air. Raise the rear of the machine so the drive
wheels are off the ground. Use jackstands and block
the front caster wheels to prevent the machine from
moving.
Move the dump valve control levers to the 11.
"freewheel" position. See Figure 7-5.