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Original part number changed from 0584093 to OEM 0439561. Difference is gasket changed from o-ring style seal to soft, flat rubber gasket. Orignal directions
Agreed. Fix the air leaks. That's probably the source of your entire performance problem. If so, it will save you at least a day or more likely two from
I don't know about the BF 150, but on the 200's and 225's there is a draining procedure that works fine, most of the time. HondaDude will know specifically
Yes it's a I/O ford motor I have been told the marine fuel pump is a dual diaphragm fuel pump it has a vent tube that runs up into the carb if the diaphragm
Switch the non working coil with a firing coil first to see if the problem follows the coil.