STIHL MS 441 C-M manual 51

										English
The following maintenance intervals apply in normal operating conditions. The spec-
ified intervals must be shortened accordingly when working for longer than normal		workstartingbefore	and/orworkofendtheat daily	refilledistankwhenever	weekly	monthly	yearly	faultyif	damagedif	requiredas
or under difficult cutting conditions (extensive dust, highly resinous lumber, lumber
from tropical trees, etc.). If the machine is only used occasionally, the intervals can
be extended accordingly.
	check	X						X
Antivibration elements
	have them replaced by a specialist								X
	dealer1)
Cooling air intake slits	clean		X
Air intake on fan housing	clean		X		X					X
Cylinder fins	clean		X		X					X
Pre-separator duct and carburetor	clean									X
housing
Shutter "pre-heat carburetor" and pre-	clean (only in winter operation)									X
heating duct
	check idle adjustment – saw chain must	X		X
	not rotate
Idle
	if the saw chain rotates in idle, have the
	chain saw serviced by a servicing									X
	dealer1)
	adjust electrode gap							X
Spark plug
	replace after every 100 hours of
	operation
All accessible screws, nuts and bolts (not	retighten									X
adjusting screws)3)
Spark arresting screen4) in muffler	check							X
	clean or replace								X
	decarbonize after 139 hours of opera-
Combustion chamber	tion, subsequently after every 150 hours									X
	of operation
Chain catcher	check	X
	replace								X
Safety information sticker	replace								X

1)STIHL recommends STIHL servicing dealers

2)see "chain brake"

3)During initial use of chain saws (with a power output of 3.4 kW or more), tighten the cylinder block screws after 10 to 20 hours of operation

4)present only in some countries

MS 441 C-M 49