I have a Sears Craftsman model 536.88521200 snow thrower with an
annoying problem that seems difficult to fix.

When digging into even a moderate amount of snow, one end of the auger
will suddenly pop out of the "cup" into which it fits. This plastic cup
is part of the plastic frame assembly. I have to stop the thrower, pop
the end of the auger shaft back into the lublricated cup, then hope it
doesn't pop out again.

I've replaced the cup/socket, but the problem remains. It is as though
the auger shaft doesn't go quite far enough into the cup. So, almost
any vibration above a certain point will cause the shaft to quickly
separate.

I've owned the Craftsman for about 5 years and this problem developed
last year.

Any advice appreciated.

Thanks . . . Steve