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OM-487 Page 14
4-3. Engine Prestart Checks
ST-801 939-C / ST-801 940 / ST-801 961
1/2 in
(13 mm)
Full
Diesel
Full
Open Valve
Full
Check all fluids daily. Engine must be
cold and on a level surface. Unit is
shipped with 10W30 engine oil. Engine
stops if oil pressure is low or engine tem-
perature is high.
. This unit has a low oil pressure shut-
down switch. However, some condi-
tions may cause engine damage be-
fore the engine shuts down. Check
oil level often and do not use the oil
pressure shutdown system to moni-
tor oil level.
Follow run-in procedure in engine manu-
al. If unburned fuel and oil collect in ex-
haust pipe during run-in, see Section 9.
Fuel
Y Do not use gasoline. Gasoline will
damage engine.
Add fresh diesel fuel before starting
engine the first time (see maintenance la-
bel for specifications). Fill fuel tank up to
1/2 in. (13 mm) from top to allow room for
expansion. Open fuel shut-off valve.
Do not run out of fuel or air enters fuel
system and causes starting problems.
See engine manual to bleed air from fuel
system.
Oil
After fueling, check oil with unit on level
surface. If oil is not up to full mark on dip-
stick, add oil (see maintenance label).
Y Engine may use oil and wetstack-
ing may occur during run-in.
Check oil several times daily dur-
ing run-in.
Coolant
Check coolant level in radiator before
starting unit the first time. Add coolant if
below bottom of filler neck (see Section
4-4 for radiator filling instructions).
Check coolant level in recovery tank dai-
ly. If coolant is below Cold Full level, add
coolant until level in tank is between Cold
Full and Hot Full levels. If recovery tank
coolant level was low, check coolant level
in radiator (see Section 4-4).
Engine coolant is a mixture of water and
ethylene glycol base antifreeze. A solu-
tion of 50% antifreeze and 50% water
must be used in this engine. Do not use
100% antifreeze or severe damage will
occur.
Keep radiator and air intake clean.
Y Incorrect engine temperature can
damage engine. Do not run engine
without a properly working ther-
mostat and radiator cap.
. To improve cold weather starting:
Keep battery in good condition. Store
battery in warm area off concrete
surface.
Use fuel formulated for cold weather
(diesel fuel can gel in cold weather).
Contact local fuel supplier for fuel
information.
Use correct grade oil for cold
weather.
Full
Capacity: w/Overflow
Tank 6.9 qt (6.5 L)
Check radiator coolant
level when fluid is low in
recovery tank.
Coolant Recovery
Tank