Update 4 on 641, shes running!

John (TR)

Well-known Member
Well, she's running.
Purchased new timing light and timed. Found I was way advanced on static time. Used tip from Ed Ohio on main jet size as the one in the kit was likely too small for this carb. While not perfectly dialed in she's idling without a miss and revs up as expected. I still need a little throttle shaft adjustment etc etc.

I think I had a variety of problems from a long neglected tractor wh1ch include:
Bad gasket intake manifold, worn out distributor shaft, poor condition carb, timing possibly off, and a couple of spark plugs that would not fire under compression.

Like usual replaced the plugs, wires, cap, rotor, made new wire for coil to distributor, rebuilt distributor including additional thrust washer, new bushing, and new power post kit. Rebuilt carb with complete kit (watch the jet size!)

Tomorrow I'll begin to reassemble the hood and tank along with new battery cables. I may have a question on throttle shaft adjustment later.

Big thanks to all who helped including Soundguy, GlenIdaho, and Ed H Ohio.

Funny thing, shortly after I got it running there was a man here installing a new water softener who stated his dad bought new a Power Master when he was a kid. Said the only problem they ever had with it was the distributor.
 
Heres a picture of the beast. The Previous owner did a number of repairs including a basic paint job. Shes not in too bad of shape, could stand new rear tires and the correct fenders but what the heck. Thanks guys!
S5030963.jpg
S5030962.jpg
 
John, Great Job! Doesn't it feel great when you wip the beast. I'm happy for you that it worked out, as you earned that one. The only trouble now is when you get all the bugs out of that little honey you're not going to want to sell it.-ed
 
Hey John, good job. I'm happy you got it running. It looks like a great tractor to keep around. Thanks for all the updates, I sure learned alot from them. Who would have thought it would have been the new seat for the high speed jet. That was a good call by Ed. I think I'll print the posts and file them away for future reference. Have fun with your tractor(s).
 
I'm already thinking about installing the chains on the WorkMaster and "evaluating" it over the winter.
 
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