I've been using my 60's vintage Mark 7 for about 6 months now and she's been running fine. I make sure to add oil every 6-8 hours of use, or sometimes even every 5 hours after running the lathe for extended periods.
Today, i was using it as a drill press and after about 20 minutes of on and off use (boring out a few holes for a wine rack), the motor didn't turn on. It makes a humming sounds as if it's "stuck" and if I try to turn it by hand, it'll want to start but just doesn't. I added oil just in case, no help. After trying to get it to start spinning a few times, it popped the breaker so I assume the engine is strained, somehow.
Any tips? I've never seen this before so I'm pretty much at a loss.