Woohoo your working on a rare pump now. Awesome details and slow mo , thanks for such a great video. Interesting. I've rarely had issues with these type pumps. Like you Said they interals are made of metals. I'm sure you will have pressure at the injectors now. Clean the injector nozzles too make a full alround service.

Very nice, good work

Wow, you left us hanging here. I'd hoped to see the tractor running. It looks like you've probably finally found out what was wrong. Am looking forward to the next video.

Good job on finding the clogged tube. That tube should see from about 20 PSI to about 100 PSI depending on the RPM. That's the same pressure that moves the timing advance piston. The RPM governor is actually in the high pressure section. The enrichment/shutoff spool is the moving part of the governor. Make sure the spring is in good condition and the shaft is free moving when sliding in and out while rotating. This is why these pumps are very funny about trash in the fuel. Great video and good luck!

How can I tell what position to reinstall the throttle and shut off levers to the spools? Im working on a VA3 pump but they are similar for the most part.

Do you know which way the notches on the throttle shafts should point? Machine i bought had the levers off already. Whole pump was seized, lines and banjo bolts clogged, injectors seized. Just got done rebuilding but the machine ran away on me while trying to start it and get the throttle and shut off shaft adjusted. That's pretty tmuch the last thing I need figured out. Thanks.

Can the throttle shaft be removed without disassembling the pump, looks like they are held on place with the plate with four screws. My throttle shaft is stuck tight, should I just pry it out?

I came over just to say Howdy and want to know how y'all are