How to Reset STIHL M-Tronic | STIHL M-Tronic Engine Management System | STIHL Maintenance | STIHL GB

STIHL M-Tronic Engine Management System is designed to make sure that your petrol tool delivers an optimum performance, all day, every day, by making automatic adjustments to regulate the fuel and air mix to the machine.

There are a couple of instances where you may need to reset the STIHL M-Tronic technology on your machine. If you carry out any work on the fuel system, such as changing a solenoid valve, replacing or cleaning a carburettor or even just replacing an old fuel filter, you will need to do an M-Tronic reset. If you find that the chainsaw isn’t running as expected (for example, not revving to its full potential), it is always worth resetting your machine as this may offer a quick and simple resolution.

There are two methods to reset a petrol machine with STIHL M-Tronic as there have been a number of new and improved versions of M-Tronic launched over the years.
Method 1 is for petrol machines with STIHL M-Tronic technology 2.0 or lower, and Method 2 for Machines with M-Tronic 2.1 or higher. It’s easy to tell which version you have by looking at the C-E label. Machines with M-Tronic 2.1 or higher are shown on the label highlighted here. If it’s not marked on the C-E label as M2.1 or M3.0, then it is likely you have an older version of M-Tronic technology.

When using a STIHL chainsaw, even just for an M-Tronic reset, you should always wear the correct Personal Protective Equipment.

🔶 Method 1 for STIHL M-Tronic re-set: 🔶
1. Remove the scabbard
2. Put the machine in the ▲ Cold start position
3. Start the machine and run it in the ▲ Cold start position for at least 90 seconds
4. Do not touch the throttle or accelerate the chainsaw during this time
5. After 90 seconds, switch off the machine
6. Your machine is now re-calibrated and ready for operation

🔶 Method for resetting STIHL M-Tronic 2.1 or higher: 🔶
1. Remove the scabbard
2. Ensure the chain brake is on
3. Put the machine in the ▲ Cold start position
4. Start the machine and run it in the ▲ Cold start position for at least 30 seconds but no more than 60 seconds
5. Do not touch the throttle or accelerate the chainsaw during this time
6. Turn off the chain brake
7. Squeeze the throttle fully for at least 30 seconds
8. Engine speed varies noticeably during calibration
9. As soon as the engine speed drops noticeably, release the throttle
10. When the engine is back to idle speed, put the chain brake on and switch off your chainsaw
11. Your chainsaw is now calibrated and ready for operation

🔶 STIHL PPE

#STIHL #STIHLGB #STIHLMTronic #STIHLMTronicReset #HowToResetSTIHLMtronic #MTronicReset #STIHLMaintenance #STIHLMTronicEngineManagementSystem #MTronicEngineManagementSystem #STIHLCarburettors #STIHLSolenoidValve

[NASCAR_NEAL]

Did this after I put a bark box on my 661-C and she’s When the saws running the entire city knows what time it is

[DanRussell-qs]

I have an old 044 Sthil saw that is in great shape . I bought in new in Montgomery Indiana in 2002 and the ONLY things I have replaced on it was the bar and chain when they wore out . NOT EVEN A SPARK PLUG !!! It is a simple saw with power and not like these new saws that something breaks all the time . I heated my whole home for many years with wood that the 044 has cut .

[tonyalways]

Thank you. Very clear and much clearer than the manual.

[onlygodknowswhat]

Very helpful thanks, my saw runs like new again.

[lawncare-u]

Interesting.. I have old ms280 cbqi ....

[stokermeister]

I’m just wondering if I would have to reset my sthil ms 261 cm when I switch from winter to summer mode ? And if I am putting a 20” bar on the chainsaw?

[bigguy]

Hi, I Like your proper explanation how to reset a mtronic, but my chainsaw doesn't run at idle because I need to reset. But how can I reset the chainsaw if it doesn't idle, it only runs while you open the throttle.(half to full)
I think it has run on low fuel. So the mtronic has prevented an air leak, by raising the mixture level?
Please help.
What to do now???
Greetings Eelco Zijlstra from the Netherlands.

[JacobMcGinn-sp]

Do you have to shut it off after the 30seconds of full rev? Or Can you just run it after that period

[elkhund]

Hello. Is the decompressor pressed before starting?For ms 462 c-m.

[rottiejakeluke]

I have a MS441C-M and wonder when I do this reset, per the correct revision, how often does this need to be done? Does it matter if I use the saw and then don’t use it for a month or two? Is there any reason to do a reset special as for if changing a muffler or air filter type? Thank you.

[C_JMJ]

I have a question, do I have to reset it every time I use it or only the first time I use it? thanks

[johnclarke]

I have a 241cm and was trying to recalibrate its computer. The rear handle says ICES-2/NBK-2. What version do I have? It would seem to be V. 2.0. Is that correct? Will Stihl update it for free?

[thomasgronek]

What should one do if the control module and solenoid have been replaced ? which control modules go with which reset methods ? Thank you

[gravityloose]

Hello, for 3.0 M-tronic does the saw needs to be warm or cold before calibration?

[markkromer]

The dealership I bought my saw from said it was not m-tronic; the price tag said "MS-661C-M" but the power head
just says "MS-661C". How do I know if it has m-tronic?

[nathanhill]

I’m wanting to do this to my 661 but I’m worried I’ll blow it up on the full throttle with no load is it true Mtronic will adjust in 4 or 5 cuts or no

[thomasgronek]

Has the STIHL M-Tronic Engine Management System been discontinued ?

[kenberscheit]

question for stihl-gb, why cant the people at rocky mountain stihl set me up as a dealer??/ they said it takes 10-20k investment . i told them i was thinking 40-60k, wont even call me back. when someone wants to spend that kind of money is that how corporate treats if it is Ill sell my 4 stihl saws and buy huskys

[qazmlp]

Как заглушить если нельзя газовать. ?Рычаг не переходит в положение stop пока не нажмёшь на рычаг газа

[СергейДерябин-лй]

Здравствуйте а у меня ничего не написано