Cleaning The Air Filter; M-Tronic; Spark Arresting Screen In Muffler - Stihl MS 441 C-M Instruction Manual

Cleaning the Air Filter

If there is a noticeable loss of engine
power:
Knock out the filter or blow it clear
N
with compressed air from the inside
outwards
If knocking-out or blowing-out does not
suffice, or in the case of stubborn dirt or
stuck filter fabric, the filter must be
subjected to a thorough cleaning.
Always replace a damaged filter.
Thorough filter cleaning
Wash the filter in STIHL special-
N
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
Dry all filter parts – do not expose to
N
extreme heat
Do not oil the filter
N
Reinstall filter
N
MS 441 C-M

M-Tronic

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:
Carry out five uniform cuts to length
N
under full load
Spark Arresting Screen in
Muffler
In some countries, the muffler is fitted
with a spark arresting screen.
If engine performance deteriorates,
N
check the spark arresting screen in
the muffler
Let the muffler cool down
N
Remove screw (1)
N
Pull out spark arresting screen (2)
N
Clean the dirty spark arresting
N
screen, replace if damaged or
heavily carbonized
Refit the spark arresting screen
N
Insert and tighten down the screw
N
English
35