Technical Information 40.2010 Page 3
TI_40_2010_13_01_02.fm
2. STIHL M-Tronic
The FS 460 C is the first STIHL clearing saw to be
equipped with the innovative M-Tronic fully
electronic engine management system. It regulates
the ignition timing and electronically adjusts the fuel
flow, taking external conditions into account.
Electronic cold / warm start detection permits a
position "Start }" on the choke lever for starting the
engine and ensures easy starting with fewer pulls of
the starter rope. The very good acceleration is
realized using the electronic controller. By means of
the engine temperature and speed, the control unit
continually checks the operating state of the
clearing saw and adjusts the fuel flow so that
optimal engine power is always available. The
electronic memory (memory function) remembers
the settings from the last time the machine was
used. Thus if the machine is restarted under the
same general conditions, the full power of the
engine is available immediately.
According to the system of product names for
convenience features (C-versions), machines with
M-Tronic are denoted with an "M".
2.1 Functional description
2.2 Components
Control unit (1)
Control center for the optimum adjustment of fuel
flow, the exact ignition timing and the memory
function.
Second pair of poles (2)
Supplies power to the control unit and solenoid
valve
Wiring harness (3)
Connects control unit, solenoid valve, micro switch
(integrated in switch gear) and diagnostic jack
Solenoid valve (4)
Electronically switched solenoid valve adjusts the
overall fuel flow in milliseconds – this permits
adjustment from 0 % to 100 % fuel
Micro switch (5)
Reports the position of the choke shutter – start
detection;
the micro switch (5) is integrated in the switch gear
Diagnostic jack (6)
Preparation for a software-based diagnostic unit
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5903TI001 KN
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