Small Engine Troubleshooting Problems? Ask a Mechanic Now.
Run a cylinder balance test. Loosen the spark plug wires and with it idling, remove one wire at a time, engine should continue to run, if engine dies when either wire is removed, the opposite cylinder is not firing. In that case, check it for spark. May have a bad coil, causing engine to run on one cylinder, causing power loss.
Kohler recommends replacing both coils if one is bad!
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