Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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Yes, it could be that the low oil sensor is keeping it from firing. I assume that you have checked the oil level and made certain that the engine is full. The switch is turned on. If it won't start even with starting fluid sprayed directly into the throat of the carburetor and you have verified that there is no spark at the spark plug. You can bypass the oil sensor by just unplugging it from the wiring o the right side of the engine, it is normally a small yellow wire coming out of the side of the engine block and going up to the switch.