cylinder problems

Bought a used Stihl 462c from guy claimed it wasn't sparking, sparked just fine, thought it was fuel problem, PLENTY of fuel getting to cylinder (EXCESSIVE flooding), took the head off and find this carnage!!! first question is where did that piece of metal come from? all bearing pins are...

Hello chainsaw experts, This is an VI 955 cylinder where the piston scuffed the wall and began to wear through plating at port edges. Would this present future problems, decrease longevity, or cause any performance issues? If okay to use, what should be done to minimize any negative impact? I...

I'm in the process of cleaning up a Husqvarna 42 special that had a blown top end with muriatic acid, and the aluminum transfer is coming off just fine. While I was wiping the aluminum slurry off, I noticed slight delaminations in the lining around what I think are the transger ports. Will this...