Yes removing that leaf spring just made it to where you have zero idea of the fuel setting now. That spring limits how far out the rollers come and that in turn controls the pistons under the rollers. This set the maximum fuel delivery the pump can deliver. It is a very sensitive adjustment. A half a turn on the screw that holds the spring on can easily be 1015% different is the top fuel delivery.
So a word of caution to any others out there that are "rebuilding" one of these pumps because of a governor ring failure. You do not have to take the entire pump apart down to this level. You can slide the roller/guides out and then the plungers with the leaf spring in place. You just need to clean out the fuel passages in the head. 95% of the time compressed air with do this fine. I am not a professional pump guy but have done 40-50 of these that just have that ring fail.
JPayne you will need to have the pump ran on a test stand to have the fuel metering set.
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Today's Featured Article - 12-Volt Conversions for 4-Cylinder Ford 2000 & 4000 Tractors - by Tommy Duvall. After two summers of having to park my old 1964 model 4000 gas 4 cyl. on a hill just in case the 6 volt system, for whatever reason, would not crank her, I decided to try the 12 volt conversion. After some research of convert or not, I decided to go ahead, the main reason being that this tractor was a working tractor, not a show tractor (yet). I did keep everything I replaced for the day I do want to restore her to showroom condition.
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