Re: 68 FD 20 hp johnson fuel pump


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Posted by Spike (24.58.64.136) on September 01, 2005 at 08:14:16:

In Reply to: 68 FD 20 hp johnson fuel pump posted by Mark on August 31, 2005 at 21:06:16:

I don't have a scanner but the lay out of the pump is logical there is the diaphram that pulses back and forth to pump.There is a valve that opens and closes to let gas in. There is a
valve that opens and closes to let the gas out.
These valves need to be placed so the gas can flow through the pump to the carb(s).
This info comes from an older manual with rebuildable pumps.The long spring goes between the diaphram and the valve retainer with the larger replacement disc on top toward the diaphram.The shorter spring goes between the diaphram and the cover with the disc against the diaphram.I don't even know if the parts for these pumps are available any more.


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