The balance wheel has a little bit of out of wobble - just a little when it is turning - barely noticeable. Probably wouldn't be a problem with a belt driven machine.
I cleaned up the balance wheel 'hole' area very thoroughly the other day when this first came up.
I changed out a hand wheel off my parts machine and it would not turn at all. I giggled it around. nadda.
I don not see any rub marks.
No odd smells - wrong - it does have a little oil smell
I'm also thinking one little chunk of dried up goo in the motor gear could do it. I need to pull it out one of these days and go at it with a pointy object and some cleaning stuff AGAIN. Maybe go over the teeth in the balance wheel AGAIN more carefully. It kinda sounds wa wa waaa wa wa wa waaa when it slows.
DH pulled out the motor and cleaned it up - it SINGS just fine when it does not turn the machine. When I pulled off the wheel the motor sounds great. It is fine in another machine. It is NOT the motor. He also tested every wire in the machine - it is NOT the wires. We also used a different and well working foot control off my go to machine. I'm wondering about taking apart the balance wheel and seeing what is beyond it - give it a good look see. Maybe there is something that can be traded from the parts machine without too much destruction...
I should tinker with it some more but I just had more therapy on my shoulder so I shouldn't get into it for a couple days.
Last edited by miriam; 01-22-2013 at 04:06 PM.