Service Manual

66 690 01 Rev. CKohlerEngines.com26
Lubrication System
This engine uses a full pressure lubrication system. This system delivers oil under pressure to crankshaft, camshaft
and connecting rod bearing surfaces. In addition to lubricating bearing surfaces, lubrication system supplies oil to
hydraulic valve lifters.
A high-effi ciency gerotor pump is located in closure plate. Oil pump maintains high oil fl ow and oil pressure, even
at low speeds and high operating temperatures. A pressure relief valve in closure plate limits maximum pressure of
system.
Lubrication Components
A
D
B
B
C
E
A Dipstick B Oil Fill Cap C Oil Filter D Oil Sentry
™
E Oil Drain Plug
OIL RECOMMENDATIONS
Refer to Maintenance.
CHECK OIL LEVEL
NOTE: To prevent extensive engine wear or damage,
never run engine with oil level below or above
operating range indicator on dipstick.
Ensure engine is cool. Clean oil fi ll/dipstick areas of any
debris.
1. Remove dipstick; wipe oil off.
2. Reinsert dipstick into tube; press completely down.
3. Remove dipstick; check oil level. Level should be at
top of indicator on dipstick.
4. If oil is low on indicator, add oil up to top of indicator
mark.
5. Reinstall and secure dipstick.
CHANGE OIL AND FILTER
Change oil while engine is warm.
1. Clean area around oil fi ll cap/dipstick, drain plug/oil
drain valve. Remove drain plug and oil fi ll cap/
dipstick. Allow oil to drain completely.
2. Clean area around oil fi lter. Place a container under
fi lter to catch any oil and remove fi lter. Wipe off
mounting surface. Reinstall drain plug. Torque to
13.6 N·m (10 ft. lb.).
3. Place new fi lter in shallow pan with open end up. Fill
with new oil until oil reaches bottom of threads. Allow
2 minutes for oil to be absorbed by fi lter material.
4. Apply a thin fi lm of clean oil to rubber gasket on new
fi lter.
5. Refer to instructions on oil fi lter for proper
installation.
6. Fill crankcase with new oil. Level should be at top of
indicator on dipstick.
7. Reinstall oil fi ll cap/dipstick and tighten securely.
8. Start engine; check for oil leaks. Stop engine; correct
leaks. Recheck oil level.