Stihl MS 441 Instruction Manual page 56

Please note that the following maintenance intervals apply for normal
operating conditions only. If your daily working time is longer than normal or
cutting conditions are difficult (very dusty work area, resin-rich wood,
tropical wood etc.), shorten the specified intervals accordingly. If you only
use the saw occasionally, extend the intervals accordingly.
Cooling inlets
Cylinder fins
Prefilter channel and carburetor body
Shutter, "preheat carburetor", and preheating
channel
Carburetor
Spark plug
All accessible screws and nuts
2)
(not adjusting screws)
Spark arresting screen* in muffler
Cumbustion Chamber
Chain catcher
Safety label
1)
STIHL recommends that this work
be done by a STIHL servicing dealer
2)
Firmly tighten cylinder base screws
of professional saws (3.4 kW or
more) after 10 to 20 hours of
operation
* see "Guide to Using this Manual"
MS 441
Clean
Clean
Clean
Clean (winter only)
Check idle adjustment – chain must not rotate
Readjust idle
Readjust electrode gap
Replace after 100 hours of operation
Retighten
Inspect
Clean or replace
Decarbonizing after 139 hours of operation,
then every 150 hours of operation
Check
Replace
Replace
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