by LiberalPacifist » Sat Oct 16, 2010 7:56 pm
I had this happen to my '47 right before the piston went out. What it was for me was the first tooth on the piston was so worn down, the gear's first tooth would slip past and it jammed between the first and second gear tooth. At first it happened only occasionally, so I would simply take a micro screwdriver and manually cycle the gears past it. Eventually the piston's tooth was so worn out it wouldn't catch anymore, and I had to replace it.
Or it could be the battery. That one is easier to fix, get a new battery or recondition it.