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ROUTINE AND PERIODIC
MAINTENANCE
ENGINE MAINTENANCE
(Refer to Figure D.3 for the location of maintenance
components.)
To prevent the engine from accidentally starting, dis-
connect the negative battery cable before servicing the
engine.
See Table D.1 for a summary of maintenance intervals
for the items listed below. More frequent service may
be required, depending on your specific application
and operating conditions. See the Kubota Engine
Operator's Manual for further information.
OIL
Check the oil level before starting engine or
daily. BE SURE TO MAINTAIN THE OIL
LEVEL. Change the oil for the first time after 50 hours
of operation. Then, under normal operating condi-
tions, change the oil as specified in the maintenance
schedule.
CHANGING THE OIL
Change the oil, while the engine is still warm, as fol-
lows:
1. Drain the oil from the drain plug located on the
engine bottom, as shown in Figure D.1.
2. Replace the plug and tighten it securely.
3. Remove the oil fill cap and add oil until the level
reaches the full mark on the dipstick. The quantity
of oil required for an oil and oil filter change is 5.4
quarts (5.1 L). Use oil that is rated for diesel engine
service (API classification CD/CE). Use SAE vis-
cosity grades per Table D.3.
TABLE D.3
4. Reinstall the oil fill cap and the dipstick and start
the engine. Run for several minutes and stop
engine. Wait 5 minutes to allow the oil to come
down to the oil pan and check oil level again.
FIGURE D.1
OIL COMPONENT LOCATIONS
OIL FILTER
Change the oil filter the first time after 50 hours of
operation. Then, under normal operating conditions,
change the oil filter at every oil change. See Table D.2
for recommended oil filters.
Change the oil filter as follows:
1. Drain the oil from the engine and allow the oil filter
to drain.
2. Remove the old filter (spin it off) and discard it.
Wipe off the filter mounting surface and adapter.
3. Apply a thin coat of new oil to the rubber gasket on
the new oil filter.
4. Spin the new filter on to the mounting adapter until
the gasket just touches the mounting surface, then
turn it down another 1/2 to 3/4 turn. Do not over-
tighten the new filter.
5. Refill the engine with the proper amount and type
of oil as described in the Changing the Oil section.
Start the engine and check for leaks around the fil-
ter element. Correct any leaks (usually by retight-
ening the filter, but only enough to stop leaks)
before placing the RANGER 300 back in service.
6. If there are no leaks, stop the engine and recheck
the oil level. If necessary, add oil to bring the level
up to the FULL mark, but do not overfill.
MAINTENANCE
D-3 D-3
RANGER 300 D AND 300 DLX
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CAUTION
Ambient Temperature
Above 25°C (77°F)
0°C (32°F) to 25°C (77°F)
Below 0°C (32°F)
Viscosity Grades
SAE 10W-30, SAE10W-40 or SAE30
SAE 10W-30, SAE10W-40 or SAE20
SAE 10W-30, SAE10W-40 or SAE10
OIL DRAIN PLUG
OIL FILTER
OIL FILL CAP
OIL LEVEL
DIP STICK