Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Kohler CH 22 engine. The engine may have an oil pressure switch to kill engine if oil pressure drops below setting. Located on the top, below the air filter housing. If no oil pressure, it would kill the spark as soon as engine starts. If the starter does not engage, need to use voltmeter and see if the key switch is loosing voltage .
I see question is till open, did you find problem?