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Instruction Manual
STIHL MS 441
Manual de instrucciones
Warning!
This saw is capable of severe kickback which
may cause serious or fatal injury. Only for
users with extraordinary cutting needs and
experience and training dealing with kickback.
Chainsaws with significantly reduced kickback
potential are available. STIHL recommends
the use of STIHL reduced kickback bar and
low kickback chain.
Advertencia!
Esta sierra es capaz de causar contragolpes
severos, los cuales pueden causar lesiones
graves o mortales. Sólo es apta para usuarios
con necesidades extraordinarias de corte y
mucha experiencia y capacitación en el
manejo de los contragolpes. Existen sierras
con un potencial mucho menor de causar
contragolpes. STIHL recomienda usar una
barra y cadena de contragolpe reducido de
STIHL.
Read and follow all safety precautions in
Instruction Manual – improper use can cause
serious or fatal injury.
Lea y siga todas las precauciones de
seguridad dadas en el manual de
instrucciones – el uso incorrecto puede causar
lesiones graves o mortales.
Instruction Manual
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1
Manual de
instrucciones
5
9 - 119
English
Contents
Allow only persons who fully understand
this Manual to operate your chain saw.
Guide to Using this Manual
2
Maintaining and Sharpening the
Saw Chain
44
48
50
52
53
53
54
Safety Precautions and Working
Techniques
2
23
23
24
24
25
25
27
27
28
28
29
30
30
33
34
35
36
36
36
37
38
38
39
39
Maintenance and Care
Main Parts
To receive maximum performance and
satisfaction from your STIHL chain saw,
it is important that you read and
understand and follow the maintenance
and safety precautions in chapter
"Safety Precautions and Working
Techniques" before using your chain
saw. For further information you can go
to www.stihlusa.com.
Cutting Attachment
Mounting the Bar and Chain
Tensioning the Chain
Check Chain Tension
Fuel
Specifications
Special Accessories
Ordering Spare Parts
Maintenance and Repairs
Fueling
STIHL Incorporated Federal
Emission Control Warranty
Statement
Chain Lubricant
54
56
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
Filling Chain Oil Tank
Checking Chain Lubrication
Chain Brake
Trademarks
Winter Operation
Electric Handle Heating
Starting / Stopping the Engine
Operating Instructions
Oil Quantity Control
Taking Care of the Guide Bar
Air Filter System
Warning!
Because a chain saw is a high-speed
wood-cutting tool, some special safety
precautions must be observed as with
any other power saw to reduce the risk
of personal injury.
Careless or improper use may cause
serious or even fatal injury.
Remove air filter
Clean standard filter
Clean HD filter
STIHL's philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
may be made from time-to-time. If the
operating characteristics or the
appearance of your chain saw differs
from those described in this manual,
please contact your STIHL dealer for
information and assistance.
Engine Management
Adjusting the Carburetor
Spark Arresting Screen in Muffler
Spark Plug
Replacing the Starter Rope and
Rewind Spring
41
43
Storing the Machine
Checking and Replacing the Chain
Sprocket
43
{
MS 441
1
English
Guide to Using this Manual
Safety Precautions and
Working Techniques
Warning!
indicates a hazardous situation which, if
not avoided, could result in severe or
fatal injury.
Because a chain saw is a
high-speed, fast-cutting
power tool, special safety
precautions must be
observed to reduce the
risk of personal injury.
Pictograms
All the pictograms attached to the
machine are shown and explained in this
manual.
Caution!
indicates a risk of property damage,
including damage to the machine or its
individual components.
It is important that you
read, fully understand
and observe the following
safety precautions and
warnings. Read the
Symbols in text
Engineering improvements
The operating and safety instructions
are supported by illustrations.
instruction manual and
the safety instructions
periodically. Careless or
improper use may cause
serious or fatal injury.
STIHL’s philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
are made from time to time. Therefore,
some changes, modifications and
improvements may not be covered in
this manual. If the operating
characteristics or the appearance of
your machine differ from those
described in this manual, please contact
your STIHL dealer for assistance.
The individual steps or procedures
described in the manual may be marked
in different ways:
N
A bullet marks a step or procedure
without direct reference to an
illustration.
Warning!
A description of a step or procedure that
refers directly to an illustration may
contain item numbers that appear in the
illustration. Example:
Reactive forces, including kickback, can
be dangerous. Pay special attention to
the section on reactive forces.
Have your STIHL dealer show you how
to operate your power tool. All safety
precautions that are generally observed
when working with an axe or a hand saw
also apply to the operation of chain
saws. Observe all applicable federal,
state and local safety regulations,
standards and ordinances. When using
a chain saw for logging purposes, for
instance, refer to the OSHA regulations
for "logging operations" at 29 Code of
Federal Regulations 1910.266.
N
N
Loosen the screw (1)
Lever (2) ...
In addition to the operating instructions,
this manual may contain paragraphs
that require your special attention. Such
paragraphs are marked with the
symbols and signal words described
below:
Danger!
indicates an imminent risk of severe or
fatal injury.
2
MS 441
English
These conditions reduce the hand's
ability to feel and regulate temperature,
produce numbness and burning
Most of these safety precautions and
warnings apply to the use of all STIHL
chain saws. Different models may have
different parts and controls. See the
appropriate section of your instruction
manual for a description of the controls
and the function of the parts of your
model.
Warning!
Do not lend or rent your power tool with-
out the instruction manual. Be sure that
anyone using it understands the infor-
mation contained in this manual.
sensations and may cause nerve and
circulation damage and tissue necrosis.
All factors which contribute to white-
finger disease are not known, but cold
weather, smoking and diseases or
physical conditions that affect blood
vessels and blood transport, as well as
high vibration levels and long periods of
exposure to vibration are mentioned as
factors in the development of whitefinger
disease. In order to reduce the risk of
whitefinger disease and carpal tunnel
syndrome, please note the following:
Warning!
Safe use of a chain saw involves
The use of this machine may be hazard-
ous.The saw chain has many sharp
cutters. If the cutters contact your flesh,
they will cut you, even if the chain is not
moving. At full throttle, the chain speed
can reach 67 mph (30 m/s).
1
2
3
the operator
the saw
the use of the saw.
THE OPERATOR
Use your chain saw only for cutting
wooden objects.
–
Most STIHL power tools are
available with an anti-vibration
Physical Condition
(
"AV") system designed to reduce
You must be in good physical condition
and mental health and not under the
influence of any substance (drugs,
alcohol, etc.) which might impair vision,
dexterity or judgment. Do not operate
this machine when you are fatigued.
Warning!
the transmission of vibrations
created by the machine to the
operator's hands. An AV system is
recommended for those persons
using power tools on a regular or
sustained basis.
Do not use it for other purposes, since
misuse may result in personal injury or
property damage, including damage to
the machine
–
–
Wear gloves and keep your hands
warm. Heated handles, which are
available on some STIHL
powerheads, are recommended for
cold weather use.
Warning!
Warning!
Minors should never be allowed to use
this power tool. Bystanders, especially
children, and animals should not be
allowed in the area where it is in use.
Be alert – if you get tired, take a break.
Tiredness may result in loss of control.
Working with any power tool can be
strenuous. If you have any condition
that might be aggravated by strenuous
work, check with your doctor before
operating this machine.
Keep the AV system well
maintained. A power tool with loose
components or with damaged or
worn AV elements will tend to have
higher vibration levels. Keep the
Warning!
To reduce the risk of injury to bystand-
ers and damage to property, never let
your power tool run unattended. When it
is not in use (e.g. during a work break),
shut it off and make sure that unauthor-
ized persons do not use it.
Warning!
Prolonged use of a power tool (or other
machines) exposing the operator to
vibrations may produce whitefinger dis-
ease (Raynaud's phenomenon) or
carpal tunnel syndrome.
MS 441
3
English
saw chain sharp. A dull chain will
Clothing must be sturdy
and snug-fitting, but allow
complete freedom of
movement. Wear long
pants made of heavy
material to help protect
your legs from contact
with branches or brush.
To reduce the risk of cut
injuries, wear pants or
chaps that contain pads
of cut retardant material.
Avoid loose-fitting jack-
ets, scarfs, neckties,
jewelry, flared or cuffed
pants, unconfined long
hair or anything that
could become caught on
branches, brush or the
moving parts of the unit.
Secure hair so it is above
shoulder level.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
increase cutting time, and pressing
a dull chain through wood will
increase the vibrations transmitted
to your hands.
Never operate your power tool unless
wearing goggles or properly fitted
–
Maintain a firm grip at all times, but
do not squeeze the handles with
constant, excessive pressure. Take
frequent breaks.
protective glasses with adequate top
and side protection complying with ANSI
Z 87.1 (or your applicable national
standard). To reduce the risk of injury to
your face STIHL recommends that you
also wear a face shield or face screen
over your goggles or protective glasses.
All the above-mentioned precautions do
not guarantee that you will not sustain
whitefinger disease or carpal tunnel
syndrome. Therefore, continual and
regular users should closely monitor the
condition of their hands and fingers. If
any of the above symptoms appear,
seek medical advice immediately.
Always wear gloves
when handling the
machine and the cutting
tool. Heavy-duty, nonslip
gloves improve your grip
and help to protect your
hands.
Warning!
The ignition system of the STIHL unit
produces an electromagnetic field of a
very low intensity. This field may inter-
fere with some pacemakers. To reduce
the risk of serious or fatal injury, persons
with a pacemaker should consult their
physician and the pacemaker manufac-
turer before operating this tool.
THE POWER TOOL
Good footing is very
important. Wear sturdy
boots with nonslip soles.
Steel-toed safety boots
are recommended.
For illustrations and definitions of the
power tool parts see the chapter on
"Main Parts and Controls."
Wear an approved safety
hard hat to reduce the
risk of injury to your head.
Chain saw noise may
damage your hearing.
Wear sound barriers (ear
plugs or ear mufflers) to
help protect your hearing.
Continual and regular
users should have their
hearing checked
Warning!
Proper Clothing
Never modify this power tool in any way.
Only attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL model are
authorized. Although certain unauthor-
ized attachments are useable with
STIHL power tools, their use may, in
fact, be extremely dangerous.
Warning!
To reduce the risk of injury, the operator
should wear proper protective apparel.
If this tool is subjected to unusually high
loads for which it was not designed (e.g.
heavy impact or a fall), always check
that it is in good condition before
regularly.
continuing work. Check in particular that
4
MS 441