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

However, there are a couple of instances where you may need to reset your M-Tronic machine. Firstly, if you carry out any work on the fuel supply 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.STIHL M Tronic Logo

Secondly, if you find that the saw 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.

Many of the M-Tronic machines can be reset to standard factory settings by following the steps below:

  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 saw during this time
  5. After 90 seconds, switch off the machine
  6. Your machine is now re-calibrated and ready for operation

M-Tronic Chainsaw In UseFor newer M-Tronic machines (such as the MS462 chainsaw) the process is different so check your Owners’ Manual to make sure that you are following the right procedure. The procedure for newer models is listed below:

  1. Remove the scabbard
  2. Ensure the chain brake is engaged (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 (the period marked as A in the diagram below)
  5. Do not touch the throttle or accelerate the saw during this time
  6. Disengage/release the chain brake
  7. Open/squeeze the throttle fully for at least 30 seconds (B in the diagram)
  8. Engine speed varies noticeably during calibration
  9. As soon as the engine speed drops noticeably (C), release the throttle back to the idle position
  10. When the engine is back to idle speed, engage the chain brake and switch off
  11. Your saw is calibrated and ready for operation

As mentioned, for newer models, always double check your Owners’ Manual to make sure you are following the right reset procedure – you can find copies of Owners’ Manuals on the STIHL website here.

Please note that when using a chainsaw, you should always wear the correct Personal Protective Equipment and take any necessary precautions.

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