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17 590 13 Rev. --
KohlerEngines.com
EN
Fuel Line
Low permeation fuel line must be installed on
carbureted Kohler Co. engines to maintain EPA
and CARB regulatory compliance.
Fuel Valve
Engines are equipped with a fuel valve
and integral screen fi lter located at inlet of
carburetor. It controls and fi lters fuel fl ow from
tank to carburetor. Clean fuel valve cup of
debris.
1. Remove two nuts, two screws, and
carburetor cover panel.
2. Turn fuel valve lever to OFF position.
3. Remove fuel valve cup. Remove O-ring and
fi lter screen.
4. Clean screen and fuel valve cup with solvent
and wipe it off.
5. Check screen and O-ring, replace if
damaged.
6. Reinstall O-ring followed by fuel valve cup.
Rotate fuel valve cup until it is fi nger tight.
Turn with a wrench 1/2 to 3/4 full turn.
7. Turn fuel valve to ON position and check for
leaks. If fuel valve leaks repeat steps 5 & 6.
8. Tighten fuel cap securely.
9. Reinstall carburetor cover panel securing
with hardware removed in step 1.
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).
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. 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 87 (R+M)/2 or higher.
● Research Octane Number (RON) 90 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.
Add Fuel
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. 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.
Ensure engine is cool.
1. Clean area around fuel cap.
2. Remove fuel cap. Fill to base of fi ller neck.
Do not overfi ll fuel tank. Leave room for fuel
to expand.
3. Reinstall fuel cap and tighten securely.
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