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Raymond SmithAug 10, 2025
How to fix a Forest-Master FM4DDE-MUL engine that won’t start (Petrol)?
- JJohn MontgomeryAug 10, 2025
If your Forest-Master Lawn and Garden Equipment engine won’t start, several things could be the issue. First, make sure the ignition switch is in the “ON” position and the fuel shut-off valve is also on. Check if you're using fresh, clean fuel; old fuel should be replaced, and a fuel stabilizer used if storing fuel longer than 30 days. Inspect the spark plug to ensure it is clean; replace it if dirty or cracked. Also, ensure there is sufficient oil. If the carburettor is dirty, clean it with fresh petrol, removing and cleaning the jet as well. Check for blockages in the pull start drum, and verify that the hopper securing bolt is tight, as a loose bolt can activate the safety cutout.
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