Kohler Triad OHC TH520 Owner's Manual page 9

Figure 6. Oil Drain Plugs, Oil Filter, and Optional
Oil Sentry TM Switch.
Change Oil Filter
Replace the oil filter at least every other oil change
(every 200 hours of operation). Always use a
genuine Kohler oil filter. Use chart below to determine
part number to order.
Oil Filter Part No.
12 050 01-S
28 050 01-S
277233-S
Replace the oil filter as follows:
1. Drain the oil from the engine crankcase.
2. Allow the oil filter to drain.
3. Before removing the oil filter, clean the area
around the oil filter to keep dirt and debris out of
the engine. Remove the old filter. Wipe off the
surface where the oil filter mounts.
4. Place a new replacement filter in a shallow pan
with the open end up. Pour new oil, of the proper
type in through the threaded center hole. Stop
pouring when the oil reaches the bottom of the
threads. Allow a minute or two for the oil to be
absorbed by the filter material.
5. Apply a thin film of clean oil to the rubber gasket
on the new filter.
6. Install the replacement oil filter to the filter adapter.
Turn the oil filter clockwise until the rubber gasket
contacts the filter adapter or oil cooler, then tighten
the filter an additional 2/3 to 1 turn.
7. Reinstall the drain plug. Make sure it is tightened
to 14 N·m (10 ft. lb.) torque.
Oil
Filter
TM
Oil Sentry
Oil Drain
Length
2-1/2"
2-1/4"
5"
8. Fill the crankcase with new oil, of the proper type,
to the "F" mark on the dipstick.
9. Test run the engine to check for leaks. Stop the
engine, allow a minute for the oil to drain down,
and recheck the level on the dipstick. Make sure
oil level is up to, but not over the ''F'' mark on the
dipstick.
Service Precleaner and Air Cleaner Element
This engine is equipped with a replaceable, high
density paper air cleaner element. Most engines are
also equipped with an oiled, foam precleaner which
surrounds the paper element. See Figures 7, 8, 9,
and 10.
Check the air cleaner daily or before starting the
engine. Check for a buildup of dirt and debris around
the air cleaner system. Keep this area clean. Also
check for loose or damaged components. Replace all
bent or damaged air cleaner components.
NOTE: Operating the engine with loose or damaged
air cleaner components could allow unfiltered
air into the engine causing premature wear
and failure.
Air Cleaner Cover
Figure 7. Standard Air Cleaner Housing
Components.
Wing Nuts
Rubber
Grommet
Figure 8. Standard Air Cleaner Components.
Cover Retaining
Knob
Element Cover
Air Cleaner
Element
Precleaner
9