Engine Oil - Scag Power Equipment SZL-36H-18FR Operator's Manual

Section 7
6. Install new drain bolt hardware on both transaxles
and torque to 15-18 ft/lbs.
7. Install new hydraulic oil filters to both axles.
8. Clean residual residue off caps and reinstall. Torque
the cap to 6-9 ft/lbs.
9. Clean and remove the fill port dipstick and vent
valve cap from the top of both transaxle. See Figure
7-6. Fill each transaxle with Tuff Torq Tuff Tech Oil.
Approximately 1.95 quarts capacity per transaxle
(3.9 quart total). Reinstall the fill port dipstick and
vent valve cap.
FILL PORT DIPSTICK
VENT VALVE CAP
Figure 7-6. Right Side Fill Port Plug
10. The hydraulic system will need to be purged of
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.
Figure 7-7. Dump Valve Control Lever
DUMP VALVE
CONTROL LEVER
11. With an operator in the operator's position, start the
engine.
12. Locate the by-pass lever on the transaxle. See
Figure 7-7.
13. Cycle the by-pass lever on and off 10 times to
allow the air to purge from the hydraulic circuit. It
may be necessary to repeat this step until the air is
completely purged from the system.
14. After the purge process is complete, remove the fill
port dipstick from both transaxles to check the oil
level. If necessary, fill oil until the oil is at the correct
level on the dipstick.

7.4 ENGINE OIL

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 8 hours of operation, change the engine
crankcase oil and replace the oil filter. Thereafter, change
the engine crankcase oil after every 50 hours of operation or
yearly, whichever occurs first. Refer to the Engine Operator's
Manual furnished with this mower for instructions.
C. CHANGING ENGINE OIL FILTER
Replace the oil filter after every 100 hours of operation.
Refer to Engine Operator's Manual for instructions.
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