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37 590 02 Rev. B
KohlerPower.com
EN
Oil Recommendations
We recommend use of Kohler oils for best 
performance. Other high-quality detergent 
oils (including synthetic) of API (American 
Petroleum Institute) service class SJ or higher 
are acceptable. Select viscosity based on air 
temperature at time of operation as shown in 
table below.
°F
-20
020324060
50 80 100
°C
-30 -20
-10 0
10 20 30
40
 5W-30
10W-30
SAE 30
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 (I).
Ensure engine is cool. Clean oil fi ll plug/dipstick 
(I) areas of any debris.
1. Remove oil fi ll plug/dipstick (I); wipe oil off.
2. Remove oil fi ll plug/dipstick (I); check oil 
level. Level should be at top of indicator on 
dipstick (I).
3. If oil is low, add oil up to point of overfl owing 
fi ller neck.
4. Reinstall oil fi ll plug/dipstick (I) and tighten 
securely.
Change Oil
Change oil while engine is warm.
1. Clean area around oil fi ll plug/dipstick (I) and 
oil drain plug (H).
2. Remove oil drain plug (H) and oil fi ll plug/
dipstick (I). Drain oil completely.
3. Reinstall oil drain plug (H). Torque to 13 ft. lb. 
(17.6 N·m).
4. Fill crankcase with new oil, up to point of 
overfl owing fi ller neck.
5. Reinstall oil fi ll plug/dipstick (I) and tighten 
securely.
6. Dispose of used oil in accordance with local 
ordinances.
Oil Sentry
™
 (if equipped)
This switch is designed to prevent engine 
from starting in a low oil or no oil condition. Oil 
Sentry
™
 may not shut down a running engine 
before damage occurs.
Fuel Recommendations
 WARNING
Explosive Fuel can cause fi res 
and severe burns.
Do not fi ll fuel tank while engine is 
hot or running.
Gasoline is extremely fl ammable and its 
vapors can explode if ignited. Never refuel 
while smoking or in vicinity of an open fl ame. 
Store gasoline only in approved containers, 
in well ventilated, unoccupied buildings, away 
from sparks or fl ames. Spilled fuel could 
ignite if it comes in contact with hot parts or 
sparks from ignition. Never use gasoline as a 
cleaning agent.
NOTE:  E15, E20 and E85 are NOT approved 
and should NOT be used; effects of 
old, stale or contaminated fuel are not 
warrantable.
Fuel must meet these requirements:
●  Clean, fresh, unleaded gasoline.
●  Octane rating of 86(R+M)/2 or higher.
●  Research Octane Number (RON) 91 octane 
minimum.
●  Gasoline up to 10% ethyl alcohol, 90% 
unleaded is acceptable.
●  Methyl Tertiary Butyl Ether (MTBE) and 
unleaded gasoline blend (max 15% MTBE by 
volume) are approved.
●  Do not add oil to gasoline.
●  Do not overfi ll fuel tank.
●  Do not use gasoline older than 30 days.