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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.
The 1.0 U.S. gallon (3.79 liter) hydraulic reservoir is
located in front of the engine and under the operator’s
platform. Fig. 4-5
Check oil level in hydraulic system after every 50 hours
of operation or weekly, whichever occurs first. Check more
often if system appears to be leaking or otherwise
malfunctioning.
Fluid level should be 1” from top of reservoir. Use only
SAE 10W40 SG, SF/CC, CD service motor oil.
Change hydraulic system filter element (Fig. 4-5) after
first 50 hours of tractor operation, then replace filter and oil
in reservoir every 500 hours thereafter. When changing
hydraulic oil use 1/2 unit (approximately 3.5 oz.) 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 directly in front of the
hydraulic reservoir. A standard oil filter wrench is used to
change filter, threads are right handed. Use a Hustler
approved filter element only.
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 - 1 turn with
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.
A hydraulic oil heat exchanger is installed on the Super
Z. This heat exchanger is designed to keep hydraulic system
oil temperature lower in hot operating conditions or heavy
continuous operating conditions.
This hydraulic heat exchanger is located above the
engine. Air is drawn across the cooling fins by an electric
fan located above the heat exchanger. Fig. 4-6
Never force anything into the heat exhanger fins which
may bend or distort them. For cleaning, use compressed air
or pressurized water only.
Fuel system
WARNING: Observe usual fuel handling
precautions; do not smoke while refueling, do
4-7
375527_0406
Figure 4-6
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Heat
exchanger
Figure 4-7
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Figure 4-8
Fuel filter
Engine
Kawasaki engine shown