D21d
Maintenance Instructions
Lubrication
61
2. Before removing the dipstick and oil fill cap,
clean the area around them to keep any dirt or
debris out of the engine.
3.
Remove the dipstick, oil fill cap, and oil drain
plug and drain the oil into a suitable container.
Be sure to allow ample time for complete
drainage.
Drain Plug
Oil Drain Location
(View from Left Side of Tractor)
4. Before removing the oil filter, clean the area
around the filter to keep dirt and debris out of
the engine.
Oil Filter
Oil Filter Location
5. Remove the old oil filter and wipe off the filter
mounting surface on the engine.
6. Apply a thin coating of clean oil to the rubber
gasket on the replacement oil filter.
IMPORTANT:
Use
ONLY
oil filters from the
engine manufacturer (Kubota HH150-32430).
Aftermarket oil filters may not seal properly
and/or may not have the correct pressure
relief valve for proper lubrication.
7. Install the new oil filter on the engine. Turn the
filter clockwise until the rubber gasket contacts
the sealing surface, then tighten an addition-
al
1/2 to 3/4 turn.
8. Reinstall the drain plug. Make sure it is tight-
ened to 10 lb·ft (14 N·m).
9. Fill the crankcase with new, clean oil. Use
only crankcase lubricants recommended by
the engine manufacturer. Refer to
Specifica
-
tions on page 3
in this manual or the en-
gine owner’s manual. Use the recommended
oil viscosity for the expected ambient tempera-
ture. Oil with the correct vis cosity will aid start-
ing in cold weather and assure proper lubrica-
tion in hot weather.
Fill up to, but not above,
the upper mark
on the dipstick. Crankcase
capacity is 3.4 quarts (3.2 liters) plus 1/2 pint
(0.24 liters) for the new oil filter.
IMPORTANT: DO NOT
use oil that is rated for
gasoline engines only (API SE/SF). This will
cause problems with a diesel engine.
IMPORTANT:
Check the dipstick reading
before adding the last 1/2 pint of oil and
fill
only to the upper mark.
DO NOT
overfill the
crankcase (oil above upper mark) as this
CAN
result in engine overheating, loss of power,
and possible engine damage.
10. Start the engine and check for oil leaks around
the oil filter. Stop the engine, recheck the oil
level, and add oil if necessary. (When the
engine is first operated with a new oil filter, the
oil level drops slightly as the filter is filled with
oil.)
