MMSC
ArboristSite Lurker
I know this saw has been discussed extensively on here & abroad. I’ve gone over everything I can find on it and it’s STILL winning the Argument.
Stihl MS261c M-Tronic 1st Gen.
Coughs on Start & Run Position. Will Start with Throttle Trigger Squeezed. Will Not Idle.
Has 140 PSI Compression (Piston & Cylinder Look Great), Spark & Fuel. New Plug - Plug is wet every time I Pull it and Fuel Seems to be Leaking out BELOW Muffler - Possibly through outlet and running down. Definitely seems to be Flooding. Spark Arrestor Screen is Clean.
Have Gone over Carb , Welch Plug Removed - All Passages Clear. Pressure Tested to 7 PSI - OK.
Swapped Black Fuel Solenoid Valve for Green. Interchanged several times with No Difference.
Repaired Bare Wires in M-Tronic wiring harness between Carb & Coil.
Pressure & Vacuum Test on Cylinder / Crank / Intake Boot - OK.
NEED to get it to Idle to Reset / Calibrate M-Tronic.
Ran it through 5 Cuts - Runs Great from Just above Idle to Wide Open Throttle.
Can’t Figure Out why it won’t Start without Pegging Throttle - or Idle. I Plan on Picking up a New Orange Fuel Filter this afternoon - about the Only thing I haven’t Ruled Out.
What am I Missing?
Stihl MS261c M-Tronic 1st Gen.
Coughs on Start & Run Position. Will Start with Throttle Trigger Squeezed. Will Not Idle.
Has 140 PSI Compression (Piston & Cylinder Look Great), Spark & Fuel. New Plug - Plug is wet every time I Pull it and Fuel Seems to be Leaking out BELOW Muffler - Possibly through outlet and running down. Definitely seems to be Flooding. Spark Arrestor Screen is Clean.
Have Gone over Carb , Welch Plug Removed - All Passages Clear. Pressure Tested to 7 PSI - OK.
Swapped Black Fuel Solenoid Valve for Green. Interchanged several times with No Difference.
Repaired Bare Wires in M-Tronic wiring harness between Carb & Coil.
Pressure & Vacuum Test on Cylinder / Crank / Intake Boot - OK.
NEED to get it to Idle to Reset / Calibrate M-Tronic.
Ran it through 5 Cuts - Runs Great from Just above Idle to Wide Open Throttle.
Can’t Figure Out why it won’t Start without Pegging Throttle - or Idle. I Plan on Picking up a New Orange Fuel Filter this afternoon - about the Only thing I haven’t Ruled Out.
What am I Missing?