As has been pointed out previously, the rope sheave screws are a 10-30 thread. Whoever “figured out” that they were a 10-28 has created problems for whoever owns the motor next. That’s a polite way to say that they f***ed it up. Sorry, but that’s accurate.
You cannot buy 10-30 screws from any supplier in this hemisphere. Most North American built lathes do not have a 30 TPI gearbox setting, so that compounds the problem by not allowing a person with a lathe to single-point cut the thread. You CAN buy a die that allows you to make them yourself. You will either have to own or borrow and know how to use a lathe. A milling machine and slitting saw also come in handle for the screwdriver slot. If you’re gathering from this post that these screws are something someone with basic machinist skills will have to make, you’re right. If you don’t happen to have those skills or access to the equipment, you need to hire it done. That is the only way you’re going to able to “buy new” parts. The tap and die are readily available in the USA, I bought mine in Michigan. Buy them and you’re all set for tooling at least. The bonus is that whoever makes a set of rope plate screws now can also make flywheel puller screws to safely remove that part without damaging the motor or yourself. Keep hammering on the flywheel nut, and this will happen. Not “if”, but “when”.
You may find some screws on a motor but then you’re rendering that motor unusable to anyone else, and they’re likely to be bunged up anyway because people notoriously used the wrong sized screwdriver to take them out, which is what f***s them up in the first place.
Hope this helps, but I don’t pay any attention to complaints if it doesn’t.
Best,
PM T2
He's livin' in his own private Idaho..... I hope to go out quietly in my sleep, like my grand-dad did..... and not screaming, like the passengers in his car...