Originally Posted by
Retro Grouch
If it was my bike I'd drip some light oil on the frontside crack that separates the freewheeling part from the stationery part. Let it soak in for a while and try to spin the freewheeling part with just your fingers. My bet is that'll fix it.
I've got an old Suntour freewheel with that exact problem. I've oiled it and got it to turn freely off the bike but by the next morning (still off the bike) it's seized again.
I guess that when I feel up to it I'll have to open it up and see what's going on inside it.
Good luck OP. Dripping oil in through the gap on the front might work.
Cheers