BiodieselNC
ArboristSite Member
I know you guys are going to get on me for this.....
So I have a Stihl FS250 strimmer that i modded a bit. Milling the cylinder yielded me about 175psi, but now I am having problems with breaking starter ropes and am wearing out the starter pawl. So I am wondering what it would take to add a decompression valve.
I know that the FS350 (and up) all come with decompression valves. Interesting though, that the FS350 has the same 40mm P/C as the 250 and it is rated at the same horsepower as well. So did they just drill a hole and tap threads? Does anyone have experience with this? Has anyone ever added a decomp to a cylinder that wasn't tapped for one?
I know this seems stupid to do for a 40cc motor, its not that I can't pull it over but more an issue of parts breakage.....
So I have a Stihl FS250 strimmer that i modded a bit. Milling the cylinder yielded me about 175psi, but now I am having problems with breaking starter ropes and am wearing out the starter pawl. So I am wondering what it would take to add a decompression valve.
I know that the FS350 (and up) all come with decompression valves. Interesting though, that the FS350 has the same 40mm P/C as the 250 and it is rated at the same horsepower as well. So did they just drill a hole and tap threads? Does anyone have experience with this? Has anyone ever added a decomp to a cylinder that wasn't tapped for one?
I know this seems stupid to do for a 40cc motor, its not that I can't pull it over but more an issue of parts breakage.....