Stihl MS-241C trouble idling and throttling

therealmitchconnors · Dec 31, 2025

Saw dies after idling after a while, often dies if given throttle. Sounds like misfiring, but it uses a m-tronic carburetor, which has no timing adjustment. Steps tried:

Checked Air filter and spark arrestor
Using canned premade mixed fuel from Stihl
replaced fuel filter
Replaced cylinder and piston
replaced spark plug
Rebuilt carb, replaced with similar model carb

Carburetor is zama c1q-s275, replaced with 276, as I couldn't find a reasonably priced 275...

(warning: loud volume)

Bob Hedgecutter · Dec 31, 2025

When it comes to mtronic and autotune saws- I am a complete novice- but I imagine a carb swap without the associated electronics- or at least some kind of software update is never going to play nice together.
Other options are wiring integrity- or lack thereof. The recommended mtronic rest procedure been applied?

therealmitchconnors · Dec 31, 2025

I'm afraid I don't know what the m-tronic rest procedure is... The thing is, it doesn't run any better or worse with the original carb... So the new carb might cause a new problem, but it's certainly not the only problem.

therealmitchconnors · Dec 31, 2025

Ah, Google lists the m-tronic reset procedure, but I can't get it to run full throttle for thirty seconds in order to trigger the reset...

Stihl MS-241C trouble idling and throttling

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