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NOTE: Do not operate this engine continuously at
angles exceeding 20° in any direction. Engine
damage could result from insufficient
lubrication.
Cooling
NOTE: If debris builds up on the radiator, cooling
system, or other external areas, stop the
engine immediately and clean. Operating the
engine with blocked or dirty cooling system
areas can cause extensive damage due to
overheating. See Clean Air Intake/Cooling
Area, page 14.
High Temperature Sensor
Some engines are equipped with a high temperature
sensor mounted in the cooling system. If the safe
operating temperature is exceeded, it will either shut
off the engine or activate a warning signal, depending
on the application.
If the warning light illuminates or engine kills
indicating excessive operating temperatures:
1. Make sure all air intake and cooling surfaces are
clean and free of debris.
2. After engine has sufficiently cooled, check the
coolant level in system to make sure it is not low.
See Checking Coolant Level, page 10.
3. Check the system for external leaks.
4. If the cause is none of the above or cannot be
identified, contact an Authorized Kohler Engine
Dealer for appropriate diagnosis and correction.
WARNING: Hot Parts!
Engine components can get extremely hot from operation. To
prevent severe burns, do not touch these areas while the engine
is running, or immediately after it is turned off. Never operate
the engine with heat shields or guards removed.
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 3750 RPM.
Maintenance Instructions
Maintenance, repair, or replacement of the emission
control devices and systems, which are being done at
the customers expense, may be performed by any
non-road engine repair establishment or individual.
Warranty repairs must be performed by an authorized
Kohler service outlet.
WARNING: Accidental Starts!
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 RequiredFrequency
• Fill fuel tank.
• Check oil level.
• Check coolant level.
• Check air cleaner for dirty
1
, loose, or damaged parts.
• Check air intake screen, radiator, and cooling areas, clean as necessary
1
.
• Clean and check cooling areas
2
.
• Change oil and oil filter (more frequently under severe conditions).
• Check spark plug condition and gap.
• Replace fuel filter (carbureted engines).
Every 250 Hours
Daily or Before
Starting Engine
Every 100 Hours
Annually or
Every 200 Hours
• Replace air cleaner element and check inner element
1
.
• Replace spark plugs.
Annually or
Every 500 Hours
Every 2 Years or
Every 1000 Hours
• Change engine coolant.
Every 1500 Hours
• Replace fuel filter
1
(EFI engines),
1
Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.
2
Cleanout Kits 25 755 20-S (black) or 25 755 21-S (gold) allow cooling areas to be cleaned without removing shrouds.
Maintenance Schedule
These required maintenance procedures should be performed at the frequency stated in the table. They should
also be included as part of any seasonal tune-up.