Dragcutter
ArboristSite Lurker
Hey guys yall are great help. It nice to have such a knowledge resource.
I have an MS271 Farm boss 2 years old. I got it pretty hot and when I let off the trigger it quit. I let it cool down it would not start back. I check it out ant it has spark and fuel. The compression however is only at 90 psi. It was NOT RUN ON UNMIXED. It was run on recommend mix stihl oil and marine gas. Non ethanol.
Looking in the exhaust port and intake I cant see any scaring on the cylinder. Piston looks a little dark but not melted by no means. Rings are dark as well. As for usage it has never worn out the original chain yet.
Questions
What should compression be?
Shouldn’t it run at 90psi?
Could I just have collapsed or weakened the rings?
I have an MS271 Farm boss 2 years old. I got it pretty hot and when I let off the trigger it quit. I let it cool down it would not start back. I check it out ant it has spark and fuel. The compression however is only at 90 psi. It was NOT RUN ON UNMIXED. It was run on recommend mix stihl oil and marine gas. Non ethanol.
Looking in the exhaust port and intake I cant see any scaring on the cylinder. Piston looks a little dark but not melted by no means. Rings are dark as well. As for usage it has never worn out the original chain yet.
Questions
What should compression be?
Shouldn’t it run at 90psi?
Could I just have collapsed or weakened the rings?