Guys,
I really appreciate all the help on this one.
I have a 36" chainbar on this that I use for milling up local wood, mostly city trees that are cut down, and the occasional cedar that drifts onto a local beach. The saw has worked like a charm for me for several years, I took it in for a 'pre-season tune up' last week and it came back dead.
They told that the damage was on the intake side of the piston as was mentioned, but they attributed it to water rather than dirt. Also that the cylinder head is chipped at the intake, though to be honest I don't see that.
The shop I have been taking it to is Point Grey Sales and Service in Vancouver. The guy there is pretty old-school but good, an old hippie/faller from way back I am sure. In the past I have preferred Pacific Falling though, but they seem to have gone belly up last month. I also have called Joe's in Langley, and Walker's in Nanaimo. I'd be inclined to send it over to Walker's if I can find the parts, and if they ever call me back . . .
Can someone elaborate on the difference between A B and C types and what the thin ring business is? What am I looking at for mine? I do see pistons available on the internet, not sure if they are the right type though. I have not seen any cylinder heads for sale. I guess buying a complete used unit is an option.
I've attached some better pictures, further comments are welcome.
Randy, thanks for the offer of help. I feel like I need a lifeline right now! I have enough invested in the saw, the bar, the chains, the mill, that I am reluctant to abandon it and buy something new. I'd sure prefer to get this fixed up.