Engine Speed
NOTE:
Do not tamper with the governor setting
to increase the maximum engine speed.
Overspeed is hazardous and will void the
engine warranty. The maximum allowable
high-idle speed for these engines is 3850
± 100 RPM, no load.
Carburetor
The carburetor is designed to deliver the correct
fuel-to-air mixture to the engine under all operating
conditions. It has been calibrated at the factory and is
not adjustable.
NOTE:
To ensure correct engine operation at
altitudes above 1525 meters (5000 ft.), it
may be necessary to have a Kohler Engine
Service Center install a high-altitude jet kit.
If a high-altitude kit has been installed, the
Maintenance Instructions
Maintenance, repair, or replacement of the emission control devices and systems, which are being done at the
customer's expense, may be performed by any non-road engine repair establishment or individual. Warranty
repairs must be performed by a Kohler Engine Service Center.
Accidental Starts can cause severe
injury or death.
Disconnect and ground spark plug
lead(s) before servicing.
Disabling engine. Accidental starting can cause severe injury or death. Before working on the engine or equipment, disable the
engine as follows: 1) Disconnect the spark plug lead(s). 2) Disconnect negative (–) battery cable from battery.
Maintenance Schedule
These required maintenance procedures should be performed at the frequency stated in the table below. They
should also be included as part of any seasonal tune-up.
Frequency
Daily or Before Starting Engine
Yearly or Every 50 Hours
Yearly or Every 100 Hours
Every 200 Hours or as Necessary Replace fuel line.
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Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.
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These procedures should be performed by a Kohler Engine Service Center.
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WARNING
Maintenance Required
Check oil level.
Fill fuel tank.
Check air intake and cooling areas; clean as necessary.
Check fuel screen.
Check air cleaner element and precleaner (if equipped).
Check spark arrestor (if equipped); clean as necessary.
Clean or replace precleaner (if equipped).
Replace air cleaner element.
Change oil (after first 5 hours, then yearly or 100 hours.)
Clean cooling areas.
Clean spark arrestor (if equipped).
Clean or replace spark plug, and set gap.
Clean fuel valve cup.
Replace fuel filter (if equipped).
Check and adjust valve clearance when engine is cold.
Service starter motor drive (if equipped).
Have combustion chamber decarbonized.
engine must be reconverted to the original jet
size before it is operated at lower altitudes, or
overheating and engine damage may result.
If engine troubles appear to be fuel-system related,
check the following areas before seeking service from
a Kohler Engine Service Center.
• Ensure the fuel tank is filled with clean, fresh
gasoline.
• Ensure the air cleaner and precleaner are clean
and securely fastened.
• Ensure that the fuel tank cap vent is not blocked
and that it is operating properly.
• Ensure the in-line fuel filter, if equipped, is clean
and unobstructed. Replace if necessary.
If after checking these items the engine is still hard
to start, runs roughly, or stalls at low-idle speed, it
may be necessary to have the carburetor serviced by a
Kohler Engine Service Center.
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