voltage. If the battery voltage is satisfactory, check the
cleanliness and tightness of the terminals and ground
connections. A general understanding of electrical servicing
and use of basic test equipment is necessary for
troubleshooting and repair.
Major overhaul or repair of the starting motor or
alternator should be performed by trained technicians only.
WARNING: Always wear adequate eye
protection when servicing the hydraulic system.
Hydraulic system
IMPORTANT: Never use hydraulic or automatic
transmission fluid in this system; use only motor oil as
specified. Remember, dirt is the primary enemy of any
hydraulic system.
WARNING: Hydraulic oil escaping under
pressure can penetrate skin. Hydraulic oil may
cause infection in a minor cut or opening in the
skin. If exposed to hydraulic fluid, see a doctor
at once.
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, park unit on
a flat surface and shut engine off. Stroke H-bar
lever from full forward to full reverse several
times.
The 3.9 U.S. quarts (3.69 liter) hydraulic reservoir is
located behind the fuel tank. Fig. 4-4
Check oil level in hydraulic system after every 100 hours
of operation or monthly, whichever occurs first. Check
more often if system appears to be leaking or otherwise
malfunctioning.
To check the oil level, loosen the cap screw that holds the
cap lock in place and pivot the lock away from the filler cap
(Fig. 4-3). Turn and pull up on the filler cap. Fluid level
should touch the bottom of screen under filler cap. Use only
SAE 10W40 SG, SF/CC, CD service motor oil.
Change hydraulic system filter element (Fig. 4-4) after
first 50 hours of tractor operation, then replace filter and oil
in reservoir every 500 hours thereafter. When changing
hydraulic oil use approximately 1/2 of a 7 oz. bottle of
Lubrizol additive (Hustler P/N 027912). This additive,
available from your Hustler dealer, will increase the
performance life of the hydraulic system components.
The system filter is located under the frame platform
between the two hydraulic pumps (Fig. 4-5). A standard oil
filter wrench is used to change filter, threads are right
handed. Use the Hustler approved element only.
NOTE: The hydraulic system oil is drained by removing
the oil filter. The reservoir does not have a seperate drain
plug.
IMPORTANT: Prefill the filter element with clean oil,
before installing, to prevent drawing air into the system
pump.
1. Fill the filter element with clean system oil. Smear a
light coating of oil on upper surface of rubber seal.
2. Install the filter element on base. Tighten the oil filter
by hand until the filter seal makes contact with the
filter head, then tighten an additional 3/4 turn with a an
oil filter wrench. — DO NOT OVERTIGHTEN.
3. Start tractor engine and let run at approximately 2/3
throttle for a few minutes to work any trapped air out
of the system before engaging the steering control
lever.
4. Stop the engine and check the filter and connections
for leaks.
5. Check the hydraulic reservoir for specified oil level.
Add clean oil as necessary.
Clean or replace hydraulic reservoir cap annually. Cap
may be cleaned by dipping in or flushing with cleaning
solvent. Follow manufacturer’s instructions and warnings
for application of solvent type selected.
NOTE: The hydraulic pumps are equipped with bypass
valves. For more information refer to Operation section,
Moving tractor with stalled engine.
778845 Rev. 7/04
4-4
Figure 4-5
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Figure 4-4
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