M-Tronic: fully electronic engine management

Starting up. Working away. Restarting. Always a perfect start.

No matter if you're just starting up, working away or restarting your chain saw after a break, M-Tronic takes perfect control of ignition timing and fuel dosage whatever the operating status, and with electronic precision. It even takes account of external conditions like temperature, elevation and fuel quality. Letting you get off to a perfect start so you can concentrate on the job at hand – whether you're felling, pruning or bucking.

The M-Tronic technology

The cornerstone of M-Tronic technology is its control unit featuring a microprocessor, electronic temperature recognition and ignition system. The microprocessor represents the "brains" of M-Tronic. All relevant information on the status of the tool feeds into this. The result: an electronically precise supply of fuel – taking operating status and external conditions into account – means you will always benefit from optimal engine performance. It also saves you time and energy since you no longer have to worry about manual carburetor adjustments.

Combi-lever with stop button function

For a cold start STIHL M-Tronic only needs one start position on the combi-lever. After starting, you can immediately power up to full speed. The amount of fuel required is precisely calculated by the system and supplied as needed. Otherwise, start in position I as usual. After the machine is turned off, the control lever immediately moves back into the operating position. This allows a warm machine to be restarted immediately.

Control unit

The control unit is the control centre of M-Tronic, consisting of a microprocessor with an engine speed gauge and temperature recognition. It calculates the ignition timing and amount of fuel needed by taking into account outside temperature, elevation and fuel quality. The memory function integrated into the system remembers your previous settings, so when external conditions are the same, full engine performance is immediately at your disposal every time you start.

Micro-switch

The micro-switch registers the position of the choke and, in conjunction with electronic temperature recognition, ensures superb starting.

Solenoid valve

The electronic solenoid valve takes just milliseconds to feed the correct amount of fuel into the engine as calculated by the control unit. Manual carburetor adjustments using adjustment screws are a thing of the past.

Fan propeller

Two pole shoes are built into the fan propeller and supply the control unit with electricity. This means the fan propeller not only provides cooling for the engine when you start up your chain saw, it also generates its own energy supply to power M-Tronic.

Your M-Tronic benefits

An easy start

Thanks to electronic cold/warm start recognition there is now only one start position on the combi-lever (▲). M-Tronic calculates electronically the exact fuel dosage. The engine starts after fewer pulls and with no change of position, and can immediately accelerate up to speed – for strength-saving, faster work.

No manual carburetor adjustments

M-Tronic electronically adjusts the fuel dosage in the carburetor: whatever the operating status, whether starting, idling, partial or full-load. And it always takes account of external conditions. Saving you time and energy.

Optimal engine performance at all times

The control unit uses engine temperature and speed to continually monitor each operating status of your chain saw, feeding in the correct amount of fuel so that you always benefit from optimal engine performance.

Superb acceleration

With the STIHL MS 362 C-M, electronic ignition timing management and fuel dosage ensure fast and responsive acceleration – even from a cold start.

Memory function

M-Tronic remembers your previous settings indefinitely and restores them when you restart the chain saw. So when external conditions are the same, full engine performance is immediately at your disposal every time you start.

STIHL products with M-Tronic

Chain saw STIHL MS 261 C-M with M-Tronic

Compact, powerful and fitted with the M-Tronic (M) fully electronic engine management as standard – the new STIHL MS 261 C-M chain saw.

STIHL MS 362 C-M chain saw with M-Tronic

More power, lighter weight and M-Tronic fully electronic engine management.

STIHL clearing saws FS 490 C, FS 510 C, 560 C

Thanks to their extraordinary power and robust design, the new STIHL clearing saws are the choice of professionals. With these new premium-class tools, removing brush and uncontrolled growth, mowing large areas, or shredding and sawing in the forest are all easier than ever.