I have two 036 Pros that I bought used, one is much more used than the other, it works ok but it takes a few more pulls to start and doesn't have quite the power of the better one. Now that I'm shut down for the summer I put a compression gauge on the weaker saw, I could only get 140psig. My gauge isn't a high quality Snap On or anything so I expect there could be a plus or minus factor.
I got out the service manual and found that Stihl doesn't list a pressure range for the top end, only pressure and vacuum tests for the bottom end. They also don't give any specs for piston clearance. or diameter or ring gap, am I missing something?
So if I take it apart how do I decide what to replace? And what is likely to happen if I run it too long? I'm a motorcycle guy and in my old two strokes if I ran a piston too long after it started slapping a skirt could break and make a mess, does that happen with modern saws or does performance decline to a point that a rebuild is necessary before anything usually comes apart?
I got out the service manual and found that Stihl doesn't list a pressure range for the top end, only pressure and vacuum tests for the bottom end. They also don't give any specs for piston clearance. or diameter or ring gap, am I missing something?
So if I take it apart how do I decide what to replace? And what is likely to happen if I run it too long? I'm a motorcycle guy and in my old two strokes if I ran a piston too long after it started slapping a skirt could break and make a mess, does that happen with modern saws or does performance decline to a point that a rebuild is necessary before anything usually comes apart?