Here is the bandsaw Gunner gave to me.  It worked for a minute 
and then stopped. I tracked it down to a faulty roll pin which 
had sheared. Note the pieces sticking out the end of the gear 
in the xmission pics. A good roll pin is flush with the gear 
diameter. <g>

The worm driven gear is kaput (check those teeth!) but the shaft 
isn't badly scored. It does wobble a lot, though, and the nut was 
loose to the driven wheel. The wheel doesn't come off and it 
appears that the shaft doesn't want to come out the inspection 
plate side.  I'll have to find a manual for this puppy.

The new roll pin and some grease got it running for the time being.

The new bimetal blade works like a champ. $23 at Medford Tool

Thanks, Gunner!