Service manual
Lubrication System
28 62 690 01 Rev. CKohlerEngines.com
This engine uses a full pressure lubrication system which delivers oil under pressure to crankshaft, camshaft,
connecting rod bearing surfaces, and hydraulic valve lifters.
A high-effi ciency gerotor oil pump maintains high oil fl ow and oil pressure, even at low speeds and high operating
temperatures. A pressure relief valve limits maximum pressure of system. Closure plate must be removed to service
oil pickup, pressure relief valve, and oil pump.
Lubrication Components
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 and drain plug.
Remove drain plug and oil fi ll cap/dipstick. Allow oil
to drain completely.
2. Clean area around oil fi lter; remove fi lter; wipe off
mounting surface. Reinstall drain plug and torque to
21.4 N·m (16 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.
9. Dispose of used oil and fi lter in accordance with
local ordinances.
A
B
C
D
E
F
G
I
H
A Oil Filter B Back Side C Oil Cooler D Cylinder Shroud E Oil Drain Plug
F Oil Fill Cap G Dipstick Tube H Pressure Switch I Dipstick