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Posted by taylor shaw on Friday, July 18, 2008:
I am working on a 2000 model new holland 5610 s with an electric fuel pump. The pump runs if the key is turned on the run position. If you turn the key to the start position, the electric fuel pump loses power. The wiring diagram shows that the relay to the pump uses two separate circuits off of the ignition switch to operate. Also, diodes are inline with the two circuits. I think that one wire is open or one of the diodes is shorted open. Has anyone experienced this type of problem? Does anyone know where the diodes are located on the tractor?
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