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Matthew RogersAug 20, 2025
How to fix a Firman P03612 that will not start or runs rough?
- AAndrew ChandlerAug 20, 2025
If your Firman Portable Generator engine will not start, starts and runs rough, or shuts down, make sure the engine switch is in the ON position and the fuel shutoff lever is also in the ON position. Check the oil level and add oil if it's low, or place the generator on a level surface. Inspect the air cleaner and replace it if it's dirty. Ensure there is fuel in the tank, and if the fuel is stale, drain and replace it with fresh fuel. Verify the spark plug wire is connected, and replace the spark plug if it's bad. If the engine is flooded, wait 5 minutes before re-cranking. If equipped with a starting battery, ensure it has sufficient charge.