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.

🔶 STIHL PPE: https://www.stihl.co.uk/STIHL-Products/01531/Personal-protective-equipment.aspx

🔶 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

Always double check your Instruction Manual to make sure you are following the right reset procedure – you can find copies of STIHL Instruction Manuals at stihl.co.uk.

🔶 STIHL PPE
https://www.stihl.co.uk/STIHL-Products/01531/Personal-protective-equipment.aspx

To find out more about STIHL M-Tronic, visit stihl.co.uk, or your nearest STIHL approved dealer using the links below.
https://shop.stihl.co.uk/pages/dealer-locator.

🔶 STIHL Website: https://www.stihl.co.uk/
🔶 STIHL M-Tronic Technology: https://www.stihl.co.uk/stihl-m-tronictrade-engine-management-system.aspx

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