Operating Guide
7
18 590 12 Rev. --
KohlerEngines.com
EN
Spark Plugs
 CAUTION
Electrical Shock can cause injury.
Do not touch wires while engine 
is running.
Clean out spark plug recess. Remove plug and 
replace.
1. Check gap using wire feeler gauge. Adjust 
gap, see specifi cation table for adjustment.
2. Install plug into cylinder head.
3. Torque plug to 20 ft. lb. (27 N·m).
Air Cleaner
NOTE:  Operating engine with loose or 
damaged air cleaner components 
could cause premature wear and 
failure. Replace all bent or damaged 
components.
NOTE:  Paper element cannot be blown out 
with compressed air.
Unhook cover latch and remove air cleaner 
cover.
Paper Element: Remove and replace paper 
element.
Foam Element: Remove foam element; 
replace or wash in warm water with detergent. 
Rinse and allow to air dry.
Reinstall air cleaner cover and secure cover 
latch.
Breather Tube
Ensure both ends of breather tube are properly 
connected.
Air Cooling
 WARNING
Hot Parts can cause severe 
burns.
Do not touch engine while 
operating or just after stopping.
Never operate engine with heat shields or 
guards removed.
Proper cooling is essential. To prevent over 
heating, clean screens, cooling fi ns, and other 
external surfaces of engine. Avoid spraying 
water at wiring harness or any electrical 
components. See Maintenance Schedule.
Repairs/Service Parts
We recommend that you use a Kohler 
authorized dealer for all maintenance, 
service, and replacement parts for engine. 
To fi nd a Kohler authorized dealer visit 
KohlerEngines.com or call 1-800-544-2444 
(U.S. and Canada).
Storage
If engine will be out of service for 2 months or 
more follow procedure below.
1. Add Kohler PRO Series fuel treatment or 
equivalent to fuel tank. Run engine 2-3 
minutes to get stabilized fuel into fuel system 
(failures due to untreated fuel are not 
warrantable).
2. Change oil while engine is still warm from 
operation. Remove spark plug(s) and pour 
about 1 oz. of engine oil into cylinder(s). 
Replace spark plug(s) and crank engine 
slowly to distribute oil.
3. Disconnect negative (-) battery cable.
4. Store engine in a clean, dry place.








