Hydraulic System - HUSTLER Super S General Service Manual

B
A. Transmission drive belt
B. Tension spring
C. Eyebolt
Figure 4-18

Hydraulic System

IMPORTANT: Never use hydraulic or automatic transmis-
sion fluid in this system; use only synthetic motor oil as
specified. Remember, dirt is the primary enemy of any
hydraulic system.
Hydraulic fluid escaping under pressure may have
sufficient force to penetrate skin and cause
serious injury. Foreign fluid injected into the skin
must be surgically removed within a few hours by
a doctor, familiar with this form of injury, or
gangrene may result.
Before applying pressure to hydraulic system,
make sure all connections are tight and all hoses
and lines are in good condition. To find a leak
under pressure, use a piece of cardboard or wood
— never use your hands. Relieve all pressure in the
system before disconnecting or working on
hydraulic lines. To relieve pressure, lower all
attachments and shut off engine.
Check oil level in hydraulic system after every 50 hours of
operation or weekly, whichever occurs first. The hydraulic
system must be cool when checking the oil level and the
mower should be on level ground. Check more often if
system appears to be leaking or otherwise malfunctioning.
REV A
F
A
E
C
D. Nut
E. Jam nut
F. Spring length (see table)
Use the hydraulic reservoir's sight glass to check the
reservoir fluid level. The oil level should be approximately in
the middle of the sight glass. Figure 4-19 & Figure 4-20
Use 15W50 or 20W50 synthetic oil when changing the
system oil and filter. For maximum transmission life, use
®
Hustler 100% Synthetic 20W50 Hydrostatic Transmission
Oil.
NOTE: The reservoir (Figure 4-21 & Figure 4-22) will
require approximately 1.0 U.S. gallons (3.78 liters) of full syn-
D
thetic 15W50 or 20W50 oil when replacing the oil after an oil
and filter change. Do not overfill the reservoir.
Initial system oil and filter change must be after the first 50
hours of mower operation. Thereafter, replace filter and oil in
the reservoir annually or every 500 hours, whichever comes
first.
IMPORTANT: It is necessary to drain the system oil from
the hydraulic reservoir, using the reservoir drain plug, before
removing the hydraulic filter. Replace the drain plug before
adding system oil.
The system filter is located at the left rear of the engine.
Use a Hustler
®
the filter use a standard oil filter wrench. The threads are
right hand. Figure 4-21 & Figure 4-22
IMPORTANT:
before installing, to prevent drawing air into the system
pump.
36" Mower shown
A
A. Sight glass
4-8
approved filter element only. When changing
Pre-fill the filter element with clean oil
Figure 4-19
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