Hi... I Have A Plobem With My B&s 11hp Motor, I Don't Know How The Counterweights (2) Are Aligned Whit The Crankshaft, Can You Help Me Please?? The Counterweigths Are Located In The Side Carnkcase Cover... thanks

You can get an exploded view here, don't know if it'll help with alignment though...

Parts view

Been so long since I rebuilt one of these... I can't remember where each weight goes.
I'd recommend getting a repair manual... (this will also tell you the specs and everything)