Kohler ECH940 Owner's Manual
![Kohler ECH940 Engine manual cover](/images/kuLAVVoRONGkegkBdkdtgKiF/thumbs/thumb175x175.webp)
Use SAE 10W-30 oil for most conditions, or SAE 5W-30 for colder environments. Always refer to the owner's manual for specific oil recommendations.
The air filter should be inspected every 100 hours of operation and replaced as needed, typically every 200 hours or annually, whichever comes first.
Ensure the engine is at operating temperature, then adjust the idle speed screw and mixture screw to achieve a smooth idle and optimal performance. Refer to the service manual for detailed instructions.
Check the fuel level, ensure the spark plug is functioning, inspect the air filter, and verify the battery is charged. If the issue persists, consult the troubleshooting section of the service manual.
The recommended spark plug gap is 0.030 inches (0.76 mm). Always use a feeler gauge to ensure accuracy.
Remove the valve cover, rotate the engine to TDC on the compression stroke, and use a feeler gauge to check clearances. Adjust if necessary. Consult the engine manual for specifications.
Regular tasks include oil changes every 100 hours, air filter checks, spark plug inspection, and checking the coolant level. Follow the maintenance schedule in the manual for best results.
Overheating can be caused by a dirty air filter, low coolant level, or a clogged radiator. Clean or replace components as necessary and ensure proper ventilation around the engine.
Yes, synthetic oil can be used as long as it meets the SAE ratings specified in the owner's manual. Synthetic oil may provide better performance in extreme temperatures.
To winterize, drain the fuel system, change the oil, remove the spark plug and add a few drops of oil into the cylinder, then turn the engine over a few times to distribute the oil. Store in a dry place.