Hydraulic System; Fuel System - HUSTLER Z4 Owner's Manual

Hydraulic system

IMPORTANT: Never use hydraulic or automatic transmis-
sion fluid in this system; use only motor oil as specified.
Remember, dirt is the primary enemy of any hydraulic system.
WARNING: 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 dis-
connecting 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. Check more often
if system appears to be leaking or otherwise malfunctioning.
Fluid level should be 1" (2.54cm) from top of reservoir. Use
only SAE 20W50 SL/SM service motor oil. Figure 9-1
Change hydraulic system filter element after first 50 hours of
tractor operation, then replace filter and oil in reservoir every
500 hours thereafter. Figure 9-1
The system filter is located 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.
Figure 9-2

Fuel system

DANGER: To avoid personal injury or property dam-
age, use extreme care in handling gasoline. Gasoline is
extremely flammable and the vapors are explosive.
DANGER: Observe usual fuel handling precautions:
Do not smoke while refueling. Extinguish all ciga-
rettes, cigars, pipes and other sources of ignition.
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Fuel filter
• Do not remove fuel cap or fill tank with engine running
or while engine is hot. Clean up any fuel spills.
• Allow engine to cool before storing machine inside a
building.
• Keep fuel away from open flame or spark and store
machine away from open flame or spark or pilot light
such as on a water heater or appliances.
• Use extreme care when handling gasoline and other
fuels. They are extremely flammable and vapors are
explosive. A fire or explosion from fuel can burn you
and others and can damage property.
• Refuel outdoors. Never refuel or drain the fuel from the
machine indoors.
• Never attempt to start engine when there is a strong
odor of gasoline or diesel fuel fumes present. Locate
and correct cause.
• Store fuel in an approved container and keep it out of
the reach of children. Never buy more than a 30 day
supply of fuel.
• Do not fill fuel containers inside a vehicle or on a
truck or trailer bed with interior carpets or plastic truck
bed liners. Always place fuel containers on the ground
away from your vehicle before filling.
• When practical, remove gas-powered equipment from
the truck or trailer and refuel the equipment with its
wheels on the ground. If this is not possible, then
refuel such equipment on the truck or trailer using a
portable container and not a fuel dispenser nozzle. If a
gasoline dispenser nozzle must be used, keep the noz-
zle in contact with the rim of the fuel tank or container
opening at all times until fueling is complete. Do not
use a nozzle lock-open device.
• Never use gasoline for cleaning parts.
• Read and observe safety precautions elsewhere in this
manual.
WARNING: Gasoline is harmful or fatal if swal-
lowed.
Long-term exposure to vapors can cause serious injury
and illness.
Avoid prolonged breathing of vapors.
Keep face away from nozzle and gas tank or fuel con-
tainer opening.
Keep gas away from eyes and skin.
If fuel is spilled on clothing, change clothing immedi-
ately.
The fuel tanks are located in the tractor's fenders.
Use regular unleaded gasoline with an octane rating of 87 or
higher. IMPORTANT: Never use methanol, gasoline
containing methanol, or gasohol containing more than 10%
ethanol because the fuel system could be damaged. Do not mix
oil with gasoline.
The fuel filter is an in-line filter located in the fuel line
between the fuel tank and the fuel pump. Figure 9-2
A fuel shut-off valve is located on each tractor. The location
and operation of the fuel valve will vary depending upon the
unit. Close the fuel valve to prevent fuel flow to the engine.
The valve's two other positions will allow fuel to be drawn from
either one or the other fuel tank. Figure 9-3
9-3