Walker MC (20 HP - Mower Deck Gearbox Lubrication

Maintenance Instructions LUBRICATION
46
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 lter, clean the area
around the lter to keep dirt and debris out of
the engine.
5. Remove the old oil lter and wipe off the lter
mounting surface on the engine.
6. Apply a thin coating of clean oil to the rubber
gasket on the replacement oil lter.
IMPORTANT: Use ONLY oil lters from the en-
gine manufacturer (Kohler 12-050-01). After-
market oil lters may not seal properly and/or
may not have the correct pressure relief valve
for proper lubrication.
7. Install the new oil lter on the engine. Turn the
lter 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 ft-lb (13.6 N
·m).
9. Fill the crankcase with new, clean oil. Use only
crankcase lubricants recommended by the en-
gine manufacturer. Refer to
Specications in
this manual or the engine owner’s manual. Use
the recommended oil viscosity for the expected
ambient temperature. Oil with the correct 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 lter.
IMPORTANT: Check the dipstick reading be-
fore adding the last 1/2 pint of oil and ll only to
the “F” mark. DO NOT overll 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 lter. Stop the engine, recheck the oil
level, and add oil if necessary. (When the en-
gine is rst operated with a new oil lter, the oil
level drops slightly as the lter is lled with oil.)
Mower Deck Gearbox Lubrication
NOTE: These instructions apply to all mower decks
with gear-driven blades. Refer to DSD52 Mower
Deck Lubrication in this section for the DSD52
deck with belt-driven blades.
The mower deck gearboxes (tee gearbox and blade
drive gearboxes) are connected as a unitized as-
sembly, and oil ows freely between them. The gear-
boxes are permanently lubricated (oil lled) 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.