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Well, got it all finished! Turns out as I suspected at the beginning, the spring was in the wrong hole of the governor lever. Found some crud in the injection pump. Cleaned it out. Got the needed fittings for the fuel tank. Put all new fuel lines on. Tidied up all the electrical & fuel...

In case you find this post & need the TM for it, Guyfang posted them at this link; https://www.steelsoldiers.com/threads/mep-531a-2-kw-generator-set.165405/ The same TM is used for the 501A & 531A.

Got everything put back together yesterday except the fuel tank, fuel filter, & fuel lines. Found the needed parts today & ordered Found some crud in the fuel injection pump. Did the valve timing one more time. The spring on the governor was in the wrong spot & read up in the TM on where it...

Well, worked a bunch this afternoon again. Was able to remove the valves & camshaft. Got the new governor fork in. Put everything back in the way it should be. Primed it up & tried to start. Nothing! Fiddled with the valve timing & tried to start again. It ran, but poorly. I think I need...

That's what I figured. Thanks for confirming.

Alright, after going at it for a few days, I got it off! The 3/16 screw is a regular thread with yellow thread locker. Damaged my regular allen key & a socket allen key but ultimately got it off. Used a puller & heat again to get the adapter off the tapered part of the thread. Got the...

Do you use them on brush trucks or something? How to they handle being dead-headed? Best way to prime if you end up needing to is removing the pull start reel & then using a 15/16 socket on a drill to turn the bolt that's seen while holding down the decompression lever. You can also loosen the...

If you run into any kinks, let us know. I did my best to be as in depth as I could with my posts & videos to help others getting into it like you out! Guys here are extremely helpful.

There is nothing in the TM (TM 9-6115-673-13&P) on the removal of that coupling part. There is a work package (WP 0021) in the TM on inspecting them & it says "Inspect flexible flange couplings on alternator and engine crankshaft for damage and wear. If damaged or worn, refer to next higher...

This is a video I made on the first one that I took apart. Got really involved & made a cool project out of it. Ultimately, ended up selling it to help pay for me MEP-802A.

So, I got my parts in. Started working on it after work today. Slowly labeled & disconnected all the wires & got the engine with the alternator removed from the frame & control box. Got just about everything off the except the stubborn 3/16 allen head screw that holds the rubber connector...

You're a genuine hero! Problem solved. I had a lot of ideas but that wasn't one of them. As I was working on another project, I started it a few times & let it run at idle. No issues. Put a load on & off a few times as well. Seems to be all good.

The voltage reading stayed right at 0.01 volts across D & E.

Cleaned up the inside of the fan area. Lot of bee & mud dobber nests. The rubber grommets were basically goo like happens to these all the time. Replaced them with something similar. Search 1/2" Rubber Grommets for 1/8" panel, 3/8" ID x 5/8" OD on eBay. There was 550 cord in the recoil start...

Another one of my fix-up threads! Got myself another MEP 501A generator. Hour meter says it has 16 hours if it is working. Pull start handle is missing along with some of the fuel lines & fittings. That's typical of units like this that has sat around outside forever. Going to dig in & at...

I will do this all tomorrow after work & report back. Thanks for the reply!

I have the aftermarket controller that Kurt makes on this unit.