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My JD X475 will run start and run fine for about an hour and then quit. The fuel filter is empty then. If I let it sit for about another hour it will start and then do the same. Could it be the electric fuel pump or the board? I tested the fuel pump wires and at times it was receiving 12 volts and other times the voltage will vary 6, 8, etc. volts. Thanks

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Fuel pump could be getting weak, however I recommend to check the vent on the fuel cap. I have seen this many times with the JD machines. The tiny hole in the middle of the fuel cap gets clogged with debris and won't vent, causing the engine to vapor lock. Next time you have this condition, with the engine off, remove the cap for a few seconds and try to restart.
Good luck!

Posted on Sep 09, 2010

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