Maintenance Instructions
LUBRICATION
51
Changing Engine Crankcase Oil/Oil Filter
Change the engine crankcase oil
after every 100
hours
of operation and replace the oil filter every
other oil change (
every 200 hours
of operation).
1. Park the mower on a
level surface with the
en gine stopped.
The engine oil should be
warm before draining. If not warm from opera-
tion, start the engine and run a few minutes to
warm the oil.
2. Before removing the dipstick, clean the area
around it to keep any dirt or debris out of the
en gine.
3. Remove the dipstick and oil drain plug, and
drain the oil into a suitable container. Be sure
to allow ample time for complete drainage.
Oil Filter
Drain Plug
Oil Drain/Oil Filter Location
4. Before removing the oil filter, clean the area
around the filter to keep dirt and debris out of
the engine.
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 en-
gine manufacturer (Kohler 28-050-01). After-
market 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 additional
1/2 turn.
8. Reinstall the drain plug. Make sure it is tight-
ened to 10 lb
·
ft (14 N
·
m).
9. Remove the fill cap on the engine valve cover,
and fill the crankcase with new, clean oil. Use
only crankcase lubricants recommended by the
en gine manufacturer. Refer to
Specifications
in this manual or the engine owner’s manual.
Use the recommended oil viscosity for the ex-
pected ambient temperature. Oil with the cor-
rect vis cosity will aid starting in cold weather
and assure proper lubrication in hot weather.
Fill up to, but not above, the “F” mark
on the
dipstick. Crankcase capacity is 1.85 quarts
(1.75 liters) plus 1/2 pint (0.24 liters) for the new
oil filter.
IMPORTANT:
Check the dipstick reading be-
fore adding the last 1/2 pint of oil and
fill only
to
the “F” mark.
DO NOT
overfill the crankcase
(oil above “F” mark) as this
CAN
result in en-
gine 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 en-
gine is first operated with a new oil filter, the oil
level drops slightly as the filter is filled with oil.)
Mower Deck Gearbox Lubrication
NOTE:
These instructions apply to all mower decks
with gear-driven blades. Refer to
DS52 or DS62
Mower Deck Lubrication
in this section for the
DS52 or DS62 deck with belt-driven blades. Refer
to
Mower Deck Spindle Lubrication
in this section
for the DS42 Belt Drive deck with belt-driven blades.
On gear driven decks, the mower deck gearboxes
(tee gearbox and blade drive gearboxes) are
connected as a unitized as
sembly, and oil flows
freely between them. The gear boxes are permanently
lubricated (oil filled) and sealed requiring no
scheduled lubrication. Howev
er, the gearbox oil
seals should be checked
every 25 hours
for
indication of an oil leak;
particularly the lower
seals
on the blade drive gearboxes should be
inspected, since they operate in a dirty en vironment.
If an oil leak is noted, replace the oil seal and
relubricate the gearbox assembly as follows:
1. Remove gearbox cover (footrest). Deck orien-
tation should be the normal operating position.
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