- 1). Verify that there is sufficient gas in the tank if the engine will not turn over. Check that all the fuel lines are securely connected and free of damage or leaks. Check the rubber fuel primer bulb for any signs of resistance or hardness. If you feel resistance, it probably means that fuel is not reaching the engine and the fuel line assembly may have to be replaced. Have a qualified marine mechanic do this for you.
- 2). Remove the spark plug and check for corrosion or excessive build-up of dirt. Usually, if the plugs are gray in color, they should be good. Clean the plugs or replace them if needed.
- 3). Open up the plastic cowling, or cover, to the engine and check for any oily residue on the inside. If you notice oil splatter, it could indicate that the rings are about to wear out. Have them replaced by a marine mechanic.
- 4). Inspect the seal (gaskets) between the engine components for any wear and tear. The gaskets are around an eight of an inch in thickness and if compromised, they can cause a vacuum leak within the system. Have a mechanic replace these for you.
- 5). Check the system for correct engine pressure. Remove the spark plug and connect the compression test gauge. The reading should be between 60 and 90 lbs per square inch (PSI). Any reading lower than this should be investigated by a mechanic.
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