Briggs and Stratton problem

how come this one sized? the berings look fine



the cylinder

At what point during disassembly were you able to turn everything? Looks pretty good in the pictures. It just locked up while you were running it?

Judging by the amount of aluminum in the seal in the top picture, I'd guess that someone didn't leave enough end play for the crankshaft. Assembled with a silicone gasket and no paper perhaps? I've done that and learned the hard way!

no, the metal is from it sitting. I got it sized from a mower repair shop that sold new ones, which was probly why he said it was sized, so he could sell another one. it was never opened until I got it.

Interesting.  How is the rod big end?  That's what usually runs out of oil first.  Anyway, the cylinder looks pretty well glazed.  This is not a new motor, but might be a good one to build...