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 To keep your engine operating at peak performance, be sure to perform proper maintenance for each of the following areas, as outlined in your owner's manual:

• Air filter 
• Oil (and filter) 
• Cooling system (including the flywheel fan, cooling fins, and any radiators or oil coolers)

Gasoline
Use unleaded regular gasoline with a pump sticker octane rating of 87 or higher. If you are required to use oxygenated fuel, blends containing a maximum of 10% ethanol or 15% MTBE are acceptable. Fuels with higher concentrations and methanol blends are not recommended.

Diesel
Use the same type of diesel fuel as used in cars (EN 590 for E.U. - ASTM D975 regulation - S 15 for U.S). Use of other types of fuel could damage the engine. Do not use dirty diesel fuel or mixtures of fuel and water since this will cause serious engine faults. When operating the engine in ambient temperatures lower than 0 degrees Celsius, use suitable low temperature fuel normally available from fuel distributors.

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 are not approved. Any failures resulting from use of these fuels will not be warranted.

Recommendations vary for each engine type based on engine and operating temperature. Please consult your owner’s manual for oil recommendations.

Synthetic oils meeting the classifications listed in your owner's manual may be used; however, you should still perform oil changes at the recommended intervals. 

Due to possible variations within a model series, we recommend that you rely on your actual dipstick readings. Add oil of the proper type up to the "F" or "FULL" mark on the dipstick. Your owner's manual can provide you with more specific information.

We do not recommend using additives or cleaners in the oil or fuel system. Air-cooled engines operate at higher temperatures than liquid-cooled automotive engines, and additives developed for automotive use may not perform properly at higher temperatures. 
In addition, oil additives can prematurely break down, altering the properties of the oil and leading to extensive internal damage or failure. Fuel system cleaning additives have a tendency to separate and turn acidic, causing damage to fuel system components. We do, however, recommend a fuel stabilizer during periods of non-use (one month or more) to retard fuel deterioration.

Check your owner's manual for the proper shutdown procedures to avoid this. If your engine is equipped with a fuel shut-off solenoid, be sure to set the throttle between half- and full-throttle before turning the key switch to OFF.

Varnish and gum deposits from stale gasoline are frequently the cause. We recommend the engine be checked and serviced by an authorized KOHLER dealer. In the future, follow the storage procedures in your owner's manual. Adding a stabilizer to the fuel before a period of non-use (one month or more) will help prevent fuel deterioration.

We recommend that the battery be disconnected, recharged with a battery charger and then tested for full capacity. Jump-starting can damage other components on the engine.

You can determine the manufacture date of your engine using the serial number. Click Here to view a sample engine identification decal. For further information, please contact us via email with the engine serial number.

The engine identification numbers (model, spec and serial number) are on a silver decal that is normally affixed to the blower housing of the engine. Whenever you need parts, please provide these numbers to your dealer.

Switching to a Command PRO engine may be possible, but it will not be a "drop in" replacement. Extensive modifications are often required. We recommend that a KOHLER dealer perform conversions of this nature.

KOHLER engines are found in a wide array of equipment including lawn and garden, commercial landscape, industrial construction, golf course maintenance, power generation, recreational and agricultural applications.

Only KOHLER® makes genuine parts for KOHLER engines. Unlike aftermarket parts, ours are made specifically for your engine. Every part we make endures demanding quality testing to ensure proper fit, reliability and long life.

To get your KOHLER genuine parts visit your local KOHLER engines dealer visit KohlerEnginesParts.com.

 Depending on the length of time since we discontinued a given engine, service parts may still be available. Contact your KOHLER dealer for more information.

Visit your local KOHLER engines dealer.

See the warranty pages of your owner's manual for details on specific engine warranties. Or for standard engine warranties, visit the Manuals look-up page.

No, but you will need to retain your proof of purchase to verify warranty eligibility.

Visit your local KOHLER engines dealer.

Find your nearest KOHLER dealer. Or call us at 1-800-544-2444 (from the U.S. and Canada).