MS 241 C-M
English
40
Thorough filter cleaning
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 Do not oil the filter
N Reinstall filter
Installing the air filter
N Fit air filter 
N Press the air filter in the direction of 
the filter housing and 
simultaneously turn it clockwise 
until the air filter engages – the 
"STIHL" logo must be horizontal
N Fit the shroud – see "Shroud"
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