The MS391used to run well. It is a used machine, that I have had issues with. I haven't run it for a few months, now it won't start. I have found that I have spark, The plug really does not get wet. So I checked the compression. I'm getting 60psi...not good. with the same pressure test unit, the 272xp reads 120 psi, so the tester is good. I just got a pressure vacuum test tool. What do I look for? The first thing I'm checking is the torque on the head screws. people have worked on this before!
My first problem with this machine was flywheel timing incorrect. I checked it again, and this is not the problem. nope. 60 psi. So what is next? Thanks
My first problem with this machine was flywheel timing incorrect. I checked it again, and this is not the problem. nope. 60 psi. So what is next? Thanks