HUSTLER 3700 Operator's Manual page 34

Do not remove fuel cap or fill tank with engine run-
ning or while engine is hot. Clean up any diesel fuel
spills immediately.
Always tighten the fuel cap securely.
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 other appliances.
Use extreme care when handling diesel fuel. It is
extremely flammable and vapors are explosive. A
fire or explosion from diesel fuel can burn you and
others and can damage property.
Never refuel or drain the diesel fuel from the
machine indoors.
Never attempt to start engine when there is a strong
odor of diesel fuel fumes present. Locate and cor-
rect cause.
Store diesel fuel in an approved container and keep it
out of the reach of children.
Do not fill diesel fuel containers inside a vehicle or
on a truck or trailer bed with interior carpets or plas-
tic truck bed liners. Always place diesel fuel con-
tainers on the ground away from your vehicle before
filling.
When practical, remove diesel fuel-powered equip-
ment from the truck or trailer and refuel the equip-
ment 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 dis-
penser nozzle. If a fuel dispenser nozzle must be
used, keep the nozzle in contact with the rim of the
fuel tank or container opening at all times until fuel-
ing is complete. Do not use a nozzle lock-open
device.
Never use diesel fuel or gasoline for cleaning parts.
Read and observe safety precautions elsewhere in
this manual.
WARNING: Diesel fuel 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 fuel tank or diesel
fuel container opening.
Keep diesel fuel away from eyes and skin.
If diesel fuel is spilled on clothing, change clothing
immediately.
WARNING: Under no circumstances should gas-
oline, alcohol, or gasohol be added to diesel fuel.
These combinations can create an increased fire or
explosive hazard.
REV F
WARNING: Fuel System Under Pressure! Fuel in
the injection system is under high pressure and can
penetrate the skin. Unqualified persons should not
remove or attempt to adjust a pump injector, nozzle
or any part of the fuel injection system.
Do not use your hand to check for leaks. Use a piece
of cardboard or paper to search for leaks.
If any fluid is injected into the skin, obtain medical
attention immediately or gangrene may result.
Failure to follow these instructions can result in seri-
ous injury.
Check the fuel line periodically as it is subject to
wear and aging, fuel may leak onto the engine which
could cause a fire.
IMPORTANT: Do not fill tank to capacity. Allow room
for expansion.
IMPORTANT: If the original fuel tank cap is lost, always
replace it with a Hustler approved cap. A "will fit cap" may
not be safe.
Diesel fuel
• Use clean, quality No. 1-D or No. 2-D fuel
• Use No. 1-D fuel if the ambient temperature is
expected to be lower than 4 degrees C or if the power
unit is to be used at an altitude exceeding 1524 m.
• Use diesel fuel with a pour point of at least 12°C
below the expected ambient temperature to prevent
fuel flow problems in cold weather.
• Keep dirt from entering the fuel tank.
• Sulfur content of the fuel should be no more than
0.05%.
• Sediment and water content should not exceed
0.05%.
• Minimum cetane number is 40. Low temperature or
high altitude operation may require use of fuel with a
higher Cetane number.
• Use properly mixed winter fuel when temperatures
are extremely cold. In most areas, diesel fuel is prop-
erly blended for summer and winter grades as ambi-
ent temperatures change. In winter, use winter grade
diesel fuel only. Otherwise, the fuel may cloud and
block the fuel system.
Refueling the power unit
The fuel tank filler cap is located at the left side of the
power unit hood. Before removing the cap, wipe all dust and
dirt from around the cap to prevent debris from falling into the
tank while filling. Figure 4-10
Use an approved fuel container and check the inside of the
container periodically for cleanliness. Fuel tank capacity is
50.5L.
NOTE: The fuel cap is a vented-type. Use only an
approved Hustler replacement cap to prevent fuel system-
related problems.
If there is no filter on the storage tank or fuel container,
filter the fuel through a 100-mesh or finer screen when filling
the mower fuel tank. Keep the mower tank as full as possible
(without filling to capacity) to minimize condensation.
4-6 109627CE_0512