Thanks everyone for the replies. I do see where there are shims [PC# 33] (presumably washers) called out that are no longer available.
As this pump did not have any shims, why can I not assume that the "setting" (leaf spring tightened down all the way) would be the same as it was before the screw broke?
Obviously I do not want to over-torque the screw. I assume the screw just fatigued over the 46 years of its life.
I do not like to half-*** fix things, but I do wonder why I need to have the pump flow tested is all. Is it a good idea? absolutely. Would I go that route if I actually changed the leaf spring or any of the internals except a fastener, yes. If I'm ignorant, please be patient with me. :) I'm new to injection pumps, but by no means am I a hack mechanic. I've set up ring and pinion gears in rear ends, rebuilt turbochargers, built engines, built kit cars, and can fabricate almost anything I have needed so far... except for this screw which frustrates me.
I placed a call to Parts Depot and they confirmed they have one available in Tenn. The JD dealership that told me "none available" and has an account with Parts Depot is closed. I will call them Monday when they re-open to find out what gives.
Above all, I want the part... but I'm also going to ask why I was told there were none available!!! Not good business as far as I am concerned.
Anyway.. It appears I am getting closer to a fix! Thanks for everyone's help.
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