What is it in the above motor that makes the mechanical fuel pump operate?
W Wendy317 Recruit Joined Dec 1, 2010 Messages 1 Dec 1, 2010 #1 What is it in the above motor that makes the mechanical fuel pump operate?
mettyfish Petty Officer 2nd Class Joined Jul 3, 2007 Messages 180 Dec 1, 2010 #2 Re: 1987 Johnson 4hp Fuel Pump Issue The fuel pump is mounted over a hole in the block. Through that hole air gets pumped or pushed into the fuel pump. That causes the diaphram to pump back and forth and therefore pumps gas to carb. Hope this helps.
Re: 1987 Johnson 4hp Fuel Pump Issue The fuel pump is mounted over a hole in the block. Through that hole air gets pumped or pushed into the fuel pump. That causes the diaphram to pump back and forth and therefore pumps gas to carb. Hope this helps.
