sheer pins

[chaz]

I have a 25 hp johnson. I'm going through sheer pins like crazy, can any one help?

[rich64]

Maybe you should stay out of that river....Just kidding, I was thinking that maybe your propeller may be out of balance. You could try taking a file to the edges  to even the blades out ,just a thought

[Wayne P.]

If you change from forward to reverse or the opposite way without a few seconds pause, that will attribute to the weakening of the pin. Of course avoiding lower unit collisions will help too.