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1. Parts Ordering

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.

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 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.

Frequency

Daily or Before

Starting Engine

Every 100 Hours

Annually or

Every 200 Hours

Every 250 Hours

Annually or

Every 500 Hours

Every 2 Years or

Every 1000 Hours

Every 1500 Hours

Perform these maintenance procedures more frequently under extremely dusty, dirty conditions.

Cleanout Kits 25 755 20-S (black) or 25 755 21-S (gold) allow cooling areas to be cleaned without removing shrouds.

Maintenance Required

• Fill fuel tank.

• Check oil level.

• Check coolant level.

• Check air cleaner for dirty

• Check air intake screen, radiator, and cooling areas, clean as necessary

• Clean and check cooling areas

• Change oil and oil filter (more frequently under severe conditions).

• Check spark plug condition and gap.

• Replace fuel filter (carbureted engines).

• Replace air cleaner element and check inner element

• Replace spark plugs.

• Change engine coolant.

• Replace fuel filter

(EFI engines),

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.

, loose, or damaged parts.