pops21
Addicted to ArboristSite
I'm rebuilding my 041. I pulled the cylinder over sand paper on a peice of glass while rotating it and got the squish down to .019 from .031. Well before I sealed it up I put the cylinder on the saw to see what the compression was. Before I put the cylinder on I lightly oiled the cylinder with some stihl ultra. After sever pulls of the cord it read 205lbs. Is this too much?
Its actually got a stihl 031 piston ring in it. I broke the original 041 ring pulling it off the piston to measure it in the bore. I had 4 031 used rings laying around. 041 ring was 44mm x1.5mm 031 ring was 44mm x 1.5mm. Ring end gap on the best 031 ring I had was .011" so I used it.
Its actually got a stihl 031 piston ring in it. I broke the original 041 ring pulling it off the piston to measure it in the bore. I had 4 031 used rings laying around. 041 ring was 44mm x1.5mm 031 ring was 44mm x 1.5mm. Ring end gap on the best 031 ring I had was .011" so I used it.