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Oil Recommendations

Using the proper type and weight of oil in the

crankcase is extremely important. So is checking oil

daily and changing oil regularly. Failure to use the

correct oil, or using dirty oil, causes premature engine

wear and failure.

Oil Type

Use high quality detergent oil of API (American

Petroleum Institute) service class SG, SH, SJ or higher.

Select the viscosity based on the air temperature at the

time of operation as shown in the following table.

*Use of synthetic oil having 5W-20 or 5W-30 rating is

acceptable, up to 4°C (40°F).

**Synthetic oils will provide better starting in extreme cold

below -23°C (-10°F).

Figure 3. Viscosity Grades Table.

NOTE: Using other than service class SG, SH, SJ or

higher oil or extending oil change intervals

longer than recommended can cause engine

damage.

NOTE: Synthetic oils meeting the listed

classifications may be used with oil changes

performed at the recommended intervals.

However to allow piston rings to properly

seat, a new or rebuilt engine should be

operated for at least 50 hours using standard

petroleum based oil before switching to

synthetic oil.

A logo or symbol on oil containers identifies the API

service class and SAE viscosity grade. See Figure 4.

Figure 4. Oil Container Logo.

Refer to Maintenance Instructions beginning on

page 8 for detailed oil check, oil change, and oil filter

change procedures.

Fuel Recommendations

WARNING: Explosive Fuel!

Gasoline is extremely flammable and its vapors can explode if

ignited. Store gasoline only in approved containers, in well

ventilated, unoccupied buildings, away from sparks or flames.

Do not fill the fuel tank while the engine is hot or running,

since spilled fuel could ignite if it comes in contact with hot parts

or sparks from ignition. Do not start the engine near spilled fuel.

Never use gasoline as a cleaning agent.

General Recommendations

Purchase gasoline in small quantities and store in

clean, approved containers. A container with a

capacity of 2 gallons or less with a pouring spout is

recommended. Such a container is easier to handle and

helps eliminate spillage during refueling.

Do not use gasoline left over from the previous season,

to minimize gum deposits in your fuel system and to

ensure easy starting.

Do not add oil to the gasoline.

Do not overfill the fuel tank. Leave room for the fuel to

expand.

Fuel Type

For best results use only clean, fresh, unleaded

gasoline with the pump sticker octane rating of 87 or

higher. In countries using the Research method, it

should be 90 octane minimum.

Unleaded gasoline is recommended as it leaves less

combustion chamber deposits and reduces harmful

exhaust emissions. Leaded gasoline is not

recommended and must not be used on EFI engines, or

on other models where exhaust emissions are

regulated.

Gasoline/Alcohol blends

Gasohol (up to 10% ethyl alcohol, 90% unleaded

gasoline by volume) is approved as a fuel for Kohler

engines. Other gasoline/alcohol blends including E20

and E85 are not to be used and not approved. Any

failures resulting from use of these fuels will not be

warranted.

Gasoline/Ether blends

Methyl Tertiary Butyl Ether (MTBE) and unleaded

gasoline blends (up to a maximum of 15% MTBE by

volume) are approved as a fuel for Kohler engine.

Other gasoline/ether blends are not approved.