Owner's Manual

MS 441 C-M
English
39
In case of stubborn dirt or stuck filter
fabric
N Wash the filter in STIHL special-
purpose cleaner (special
accessory) or a clean, non-
flammable cleaning liquid (e. g.,
warm soapy water) – rinse the filter
from inside to out under a water jet
– do not use high-pressure cleaners
N Dry all filter parts – do not expose to
extreme heat
N Fit the felt prefilter (1) over the HD
filter (2), note installation position
The felt prefilter protects the HD filter
and increases its service life. Thus it
should be replaced at shorter intervals
than the HD filter.
Always replace a damaged filter.
N Reinstall filter
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
Basic information
M-Tronic regulates the fuel quantity and
ignition timing for all operating states
electronically.
M-Tronic stands for easy, fast starting,
constant optimum engine performance,
outstanding acceleration and automatic
adaptation to changes in operating
conditions.
Manual carburetor adjustments are no
longer required – the carburetor does
not have any adjusting screws.
Automatic adjustment
Under extremely changed operating
conditions, attainment of the optimal
setting can be accelerated as follows:
N Carry out five uniform cuts to length
under full load
001BA216 KN
2
1
001BA217 KN
Engine Management M-Tronic