![]() ![]() Even older saws without the electronic stuff pose problems that would not be there if the user would just turn them off at the first sign of running out of fuel. Part of this depends on how often the carb "samples" to make an adjustment. AT or Mtronic saws have the additional problem of the fuel settings changing as the saw tries to compensate for the tank running dry. But running saws dry all the time opens up the user to variables that can cause some restart problems on any saw. Granted I don't belong in a stihl thread cause I don't know what I'm talking about. Finally, is there some source that actual explains mtronic? Does it control just the mixture and timing or does it control the throttle plate too? Does it have an oxygen sensor and if not how does it "know" when the mixture is right? Does it have temperature and pressure sensors? What does the solenoid do? Does it adjust a needle in an orifice or something else? First, what are you supposed to do with a vapor locked mtronic saw? I can't put the choke on and pull to get the vapor out because the $%^#ing computer is controlling the choke and I am not patient enough to just sit there? Second, do these saws flood? It sure acts like it floods when it is warm and running can fuel. I still have trouble with the both saws dying when bleeping the throttle after cranking and they seem to flood sometimes. I switched to premix from the hardware store (expensive!) and they run better, but not perfect. The bulb on the 201 would go dry and when I opened the gas tank I could see bubbles coming out of the fuel filter. I am pretty sure a lot of the trouble was vapor lock. I have had trouble with both saws using filing station lead free/synthetic. Quote from: Jim Chance on April 18, 2021, 08:40:52 PM I recently bought two new saws, a MS 201CM V3 and an MS 261 CM V2. I recently bought two new saws, a MS 201CM V3 and an MS 261 CM V2. ![]()
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