YOU'VE GOT QUESTIONS.  WE HAVE ANSWERS.

Have a question about KOHLER engines? We've compiled a list of common questions and answers below. 

Topics

Maintenance

What can I do to maximize the life of my engine?

 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)
What fuel is recommended for my engine?

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.

What blends of gasoline may I use in my Kohler Engine?

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.

What oil should I use?

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

Can I use synthetic oil?

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. To allow the piston rings to seat properly, we recommend operating a new or rebuilt engine for at least 50 hours on standard oil before switching to synthetic oil.

How much oil goes in my engine?

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.

Can I use additives in my engine?

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.

Troubleshooting

Why does my engine backfire when I shut it off?

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.

Why is my engine running poorly? Or, why does it have gas running out of the air filter when it comes out of storage?

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.

My battery is dead. Can I jump start my engine?

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.

Engine Information

When was my engine built?

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.

How do I identify my engine? Where are the engine ID numbers located?

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.

Is there a Command PRO that will fit in place of my old K-Series?

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.

What applications are powered by KOHLER engines?

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.

Parts

Can I use aftermarket parts on my engine?

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.

Where can I buy service parts?

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

Can I buy parts for a discontinued KOHLER engine?

 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.

I want to buy a new engine. Where should I go?

Visit your local KOHLER engines dealer.

Warranty

What is the warranty period for my engine?

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.

Do I need to register my engine?

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

My engine is under warranty and needs to be repaired. What do I do?

Visit your local KOHLER engines dealer.

How do I locate the nearest KOHLER engines dealer?

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