Small Engine Troubleshooting Problems? Ask a Mechanic Now.
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There is also a relay in the system that could be causing your problem. I am including the parts manual with this comment so that you can get a better idea as to what you are looking for. On page 16, reference 7 is the relay, page 17 gives you the part number for it.
If this relay goes bad it can cause the same issue that you are having in that it will not keep the fuel pump or system operating when the start switch is released.
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