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Old 10-29-2018, 11:49 AM
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capnward capnward is offline
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If you rebuilt the fuel pump, I found this old jpg file showing how the pump can be reassembled incorrectly. Maybe this happened to you. Note the 'incorrect' orientation of the bar connecting the pushrod to the diaphragm. I'm not sure how this works, never having taken my pump off the engine and looked at this mechanism. It looks as if the diaphragm would not go up if the bar is installed that way, but the bail would still move the diaphragm. Hope this helps. The pushrod looks like a very simple part that not much could go wrong with, but maybe it wore down. I thought crankcase oil would have kept it from going rusty, and not sliding well as it emerges from the engine. Good Luck, and keep us posted.
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