All accessible screws, nuts and bolts (not adjusting
screws)
2)
retightenX
Spark arresting screen (present only in some
countries)
check
1)
X
clean or replace if necessary
1)
X
Chain catcher
checkX
replaceX
Exhaust bore
decarbonize after 139 hours of operation, subse-
quently after every 150 hours of operation
X
Safety information labelsreplaceX
1)
STIHL recommends STIHL servicing dealers
2)
During initial use of professional chain saws (with a power output of 3.4 kW or more), tighten the cylinder block screws after 10 to 20 hours of operation
The following information applies under normal operating conditions. The specified intervals must be
shortened accordingly when working for longer than normal each day or under difficult conditions
(extensive dust, highly resinous lumber, lumber from tropical trees, etc.). If the machine is only used
occasionally, the intervals can be extended accordingly.
before starting work
at the end of work and/or
daily
whenever tank is refilled
weekly
monthly
yearly
if faulty
if damaged
as required
MS 461 R
English
57
1Carburetor Box Cover
2Carburetor Adjusting Screws
3Spark Plug Boot
4Wrench Holder
5Chain Brake
6Chain Sprocket
7Chain Sprocket Cover
8Chain Tensioner
9Bumper Spike
10Guide Bar
11Oilomatic Saw Chain
12Chain Catcher
13Splatter Shield
14Oil Filler Cap
15Muffler
16Front Hand Guard
17Front Handle (Handlebar)
18Decompression Valve –
(Automatically Resetting)
19Starter Grip
20Fuel Filler Cap
21Master Control Lever
22Throttle Trigger
23Rear Handle
24Throttle Trigger Lockout
25Rear Hand Guard
26Depth Limiter
27Star Knob
28Bow Grip
#Serial Number
Main Parts
18
28
5
12
24
27
#
6
8
9
1
2
3
4
11
10
7
14
15
16
17
19
20
21
22
23
25
13
3443BA036 KN
26
MS 461 R
English
58
Definitions
1Carburetor Box Cover
Covers the air filter and the
carburetor.
2Carburetor Adjusting Screws
For tuning the carburetor.
3Spark Plug Boot
Connects the spark plug with the
ignition lead.
4Wrench Holder
To hold the wrench.
5Chain Brake
A device to stop the rotation of the
chain. Is activated in a kickback
situation by the operator's hand or
by inertia.
6Chain Sprocket
The toothed wheel that drives the
saw chain.
7Chain Sprocket Cover
Covers the clutch and chain
sprocket.
8Chain Tensioner
Permits precise adjustment of chain
tension.
9Bumper Spike
Toothed stop for holding saw steady
against wood.
10Guide Bar
Supports and guides the saw chain.
11Oilomatic Saw Chain
A loop consisting of cutters, tie
straps and drive links.
12Chain Catcher
Helps to reduce the risk of operator
contact by a chain when it breaks or
comes off the bar.
13Splatter Shield
Helps to shield the crankcase and
the muffler from cutting debris.
14Oil Filler Cap
For closing the oil tank.
15Muffler
Reduces engine exhaust noises
and diverts exhaust gases away
from operator.
16Front Hand Guard
Provides protection against
projecting branches and helps
prevent left hand from touching the
chain if it slips off the handlebar. It
also serves as the lever for chain
brake activation.
17Front Handle (Handlebar)
Handlebar for the left hand at the
front of the saw.
18Decompression Valve –
(Automatically Resetting)
Releases compression pressure to
make starting easier – when
activated.
19Starter Grip
The grip of the pull starter, for
starting the engine.
20Fuel Filler Cap
For closing the fuel tank.
21Master Control Lever
Lever for choke control, starting
throttle, run and stop switch
position.
22Throttle Trigger
Controls the speed of the engine.
23Rear Handle
The support handle for the right
hand, located at the rear of the saw.
24Throttle Trigger Lockout
Must be depressed before the
throttle trigger can be activated.
25Rear Hand Guard
Gives added protection to
operator's right hand.
26Depth Limiter
For adjusting the cutting depth of
the cutting attachment to limit the
depth of entry into material.
27Star Knob
Locks depth limiter in selected
position.
28Bow Grip
For adjusting the depth limiter.
Guide Bar Nose
The exposed end of the guide bar.
(not illustrated, see chapter
"Tensioning the Saw Chain".
Clutch
Couples engine to chain sprocket
when engine is accelerated beyond
idle speed. (not illustrated)
Anti-Vibration System
The anti-vibration system includes a
number of anti-vibration elements
designed to reduce the
transmission of vibrations created
by the engine and cutting
attachment to the operator's hands.
(not illustrated)
MS 461 R
English
59
Engine
STIHL single cylinder two-stroke engine
Ignition system
Electronic magneto ignition
Fuel system
All position diaphragm carburetor with
integral fuel pump
Chain lubrication
Fully automatic, speed-controlled oil
pump with reciprocating piston –
additional manual oil flow control
Weight
dry, without bar and chain
Cutting attachment
Rescue missions
In rescue missions, use only the chains
expressly approved by STIHL for such
applications, e.g., the Rapid Duro
Rescue (36 RDR).
For rescue missions with the
aforementioned saw chain, STIHL
recommends the following guide bar:
Rollomatic "S" with sprocket nose (11-
tooth) 20 in (50 cm)
Normal cutting of wood
Recommended cutting attachments in
compliance with Sec. 5.11 of ANSI
standard B 175.1-2000
Observe the information about ANSI
standard B 175.1-2000 as well as the
definition "low-kickback saw chain" in
the section "Safety Precautions and
Working Techniques".
Rollomatic E guide bars
Rollomatic ES and Rollomatic ES light
guide bars
Saw chains 3/8"
Specifications
Displacement:4.67 cu. in.
(76.5 cm
3)
Bore:2.05 in. (52 mm)
Stroke:1.42 in. (36 mm)
Engine power to
ISO 7293:
6.0 hp (4.5kW) at
9,800 rpm
Idle speed:2,500 rpm
Maximum permissi-
ble speed with bar
and chain:13,000 rpm
Spark plug
(suppressed):
Bosch WSR 6 F,
NGK BPMR 7 A
Electrode gap:0.02 in. (0.5 mm)
Fuel tank capacity:27.1fl.oz (0.8 l)
Oil tank capacity:11.0fl.oz (0.325 l)
dry, without bar and
chain15.4 lbs. (7.0 kg)
Depth limiter (spe-
cial accessory)2.56 lbs. (1.16 kg)
STIHL reduced kickback guide bars
(with green label)
Bar lengths:18, 20, 25, 28, 30in.
(45, 50, 63, 71, 75 cm)
Pitch:3/8" (9.32 mm)
Groove width:0.050 in. (1.3 mm) or
0.063 in. (1.6 mm)
Sprocket nose: 10-tooth for cutting
lengths 18, 20 in. (45,
50 cm)
11-tooth for cutting
lengths 25, 28, 30 in.
(63, 71, 75 cm)
STIHL reduced kickback guide bars
(with green label)
Bar lengths:25, 28, 30, 32, 36in.
(63, 71, 75, 80, 90 cm)
Pitch:3/8" (9.32 mm)
Groove width:0.050 in. (1.3 mm) or
0.063 in. (1.6 mm)
Sprocket nose: 11-tooth
STIHL reduced kickback saw chain
(with green label)
Rapid Super 3 (33 RS3) Type 3624
Pitch:3/8" (9.32 mm)
Drive link gauge:0.050 in. (1.3 mm)
STIHL reduced kickback saw chain
(with green label)
Rapid Super 3 (36 RS3) Type 3626
Pitch:3/8" (9.32 mm)
Drive link gauge:0.063 in. (1.6 mm)
MS 461 R
English
60
Chain sprocket
In order to comply with the kickback
performance requirements of Sec. 5.11
of ANSI standard B 175.1-2000, do not
use replacement saw chains unless they
have been designated as meeting the
ANSI Sec. 5.11 requirements on this
specific engine unit, or have been
designated as "low kickback" saw
chains in accordance with the ANSI
B175.1-2000 standard.
Since new bar/chain combinations may
be developed after publication of this
Manual, ask your STIHL dealer for the
latest STIHL recommendations.
EPA / CEPA
The Emission Compliance Period
referred to on the Emissions
Compliance Label indicates the number
of operating hours for which the engine
has been shown to meet Federal
emission requirements.
Category
Contact your STIHL dealer for
information regarding special
accessories that may be available for
your product.
Please enter your saw model, serial
number as well as the part numbers of
the guide bar and saw chain in the
spaces provided. This will make re-
ordering simpler.
The guide bar and saw chain are subject
to normal wear and tear. When
purchasing these parts, always quote
the saw model, the part numbers and
names of the parts.
See "Specifications" in this manual for
the recommended reduced kickback
cutting attachments.
7-tooth for 3/8" (rim sprocket)
A = 300 hours
B = 125 hours
C = 50 hours
Special AccessoriesOrdering Spare Parts
Model
Serial number
Guide bar part number
Chain part number
MS 461 R
English
61
Users of this unit should carry out only
the maintenance operations described
in this manual. Other repair work may be
performed only by authorized STIHL
service shops.
Warranty claims following repairs can be
accepted only if the repair has been
performed by an authorized STIHL
servicing dealer using original STIHL
replacement parts.
Original STIHL parts can be identified by
the STIHL part number, the {
logo and, in some cases, by the STIHL
parts symbol K. The symbol may
appear alone on small parts.
Observe all country-specific waste
disposal rules and regulations.
STIHL products must not be thrown in
the garbage can. Take the product,
accessories and packaging to an
approved disposal site for environment-
friendly recycling.
Contact your STIHL servicing dealer for
the latest information on waste disposal.
Maintenance and RepairsDisposal
000BA073 KN
MS 461 R
English
62
Your Warranty Rights and Obligations
The U.S. Environmental Protection
Agency (EPA) and STIHL Incorporated
are pleased to explain the Emission
Control System Warranty on your
equipment type engine. In the U.S. new
1997 and later model year small off-road
equipment engines must be designed,
built and equipped, at the time of sale, to
meet the U.S. EPA regulations for small
non road engines. The equipment
engine must be free from defects in
materials and workmanship which
cause it to fail to conform with U.S. EPA
standards for the first two years of
engine use from the date of sale to the
ultimate purchaser.
STIHL Incorporated must warrant the
emission control system on your small
off-road engine for the period of time
listed below provided there has been no
abuse, neglect or improper maintenance
of your small off-road equipment engine.
Your emission control system includes
parts such as the carburetor and the
ignition system. Also included may be
hoses, and connectors and other
emission-related assemblies.
Where a warrantable condition exists,
STIHL Incorporated will repair your
small off-road equipment engine at no
cost to you including diagnosis (if the
diagnostic work is performed at an
authorized dealer), parts and labor.
Manufacturer's Warranty Coverage
In the U.S., 1997 and later model year
small off-road equipment engines are
warranted for two years. If any emission-
related part on your engine is defective,
the part will be repaired or replaced by
STIHL Incorporated free of charge.
Owner's Warranty Responsibilities
As the small off-road equipment engine
owner, you are responsible for the
performance of the required
maintenance listed in your instruction
manual. STIHL Incorporated
recommends that you retain all receipts
covering maintenance on your small off-
road equipment engine, but STIHL
Incorporated cannot deny warranty
solely for the lack of receipts or for your
failure to ensure the performance of all
scheduled maintenance.
Any replacement part or service that is
equivalent in performance and durability
may be used in non-warranty
maintenance or repairs, and shall not
reduce the warranty obligations of the
engine manufacturer.
As the small off-road equipment engine
owner, you should be aware, however,
that STIHL Incorporated may deny you
warranty coverage if your small off-road
equipment engine or a part has failed
due to abuse, neglect, improper
maintenance or unapproved
modifications.
You are responsible for presenting your
small off-road equipment engine to a
STIHL service center as soon as a
problem exists. The warranty repairs will
be completed in a reasonable amount of
time, not to exceed 30 days.
If you have any questions regarding your
warranty rights and responsibilities,
please contact a STIHL customer
service representative at 1-800-467-
8445 or you can write to
STIHL Inc.,
536 Viking Drive, P.O. Box 2015,
Virginia Beach, VA 23450-2015
www.stihlusa.com
Coverage by STIHL Incorporated
STIHL Incorporated warrants to the
ultimate purchaser and each
subsequent purchaser that your small
off-road equipment engine will be
designed, built and equipped, at the time
of sale, to meet all applicable
regulations. STIHL Incorporated also
warrants to the initial purchaser and
each subsequent purchaser that your
engine is free from defects in materials
and workmanship which cause the
engine to fail to conform with applicable
regulations for a period of two years.
Warranty Period
The warranty period will begin on the
date the utility equipment engine is
purchased by the initial purchaser and
you have signed and sent back the
warranty card to STIHL.
If any emission-related part on your
engine is defective, the part will be
replaced by STIHL Incorporated at no
cost to the owner. Any warranted part
which is not scheduled for replacement
STIHL Incorporated Federal
Emission Control Warranty
Statement
MS 461 R
English
63
as required maintenance, or which is
scheduled only for regular inspection to
the effect of "repair or replace as
necessary" will be warranted for the
warranty period. Any warranted part
which is scheduled for replacement as
required maintenance will be warranted
for the period of time up to the first
scheduled replacement point for that
part.
Diagnosis
You, as the owner, shall not be charged
for diagnostic labor which leads to the
determination that a warranted part is
defective. However, if you claim
warranty for a component and the
machine is tested as non-defective,
STIHL Incorporated will charge you for
the cost of the emission test. Mechanical
diagnostic work will be performed at an
authorized STIHL servicing dealer.
Emission test may be performed either
at STIHL Incorporated or at any
independent test laboratory.
Warranty Work
STIHL Incorporated shall remedy
warranty defects at any authorized
STIHL servicing dealer or warranty
station. Any such work shall be free of
charge to the owner if it is determined
that a warranted part is defective.
Any manufacturer-approved or
equivalent replacement part may be
used for any warranty maintenance or
repairs on emission-related parts and
must be provided without charge to the
owner. STIHL Incorporated is liable for
damages to other engine components
caused by the failure of a warranted part
still under warranty.
The following list specifically defines the
emission-related warranted parts:
–Air Filter
–Carburetor (if applicable)
–Fuel Pump
–Choke (Cold Start Enrichment
System) (if applicable)
–Control Linkages
–Intake Manifold
–Magneto or Electronic Ignition
System (Ignition Module or
Electronic Control Unit)
–Fly Wheel
–Spark Plug
–Injection Valve (if applicable)
–Injection Pump (if applicable)
–Throttle Housing (if applicable)
–Cylinder
–Muffler
–Catalytic Converter (if applicable)
–Fuel Tank
–Fuel Cap
–Fuel Line
–Fuel Line Fittings
–Clamps
–Fasteners
Where to make a Claim for Warranty
Service
Bring the product to any authorized
STIHL servicing dealer and present the
signed warranty card.
Maintenance Requirements
The maintenance instructions in this
manual are based on the application of
the recommended 2-stroke fuel-oil
mixture (see also instruction "Fuel").
Deviations from this recommendation
regarding quality and mixing ratio of fuel
and oil may require shorter maintenance
intervals.
Limitations
This Emission Control Systems
Warranty shall not cover any of the
following:
Nrepair or replacement required
because of misuse, neglect or lack
of required maintenance,
Nrepairs improperly performed or
replacements not conforming to
STIHL Incorporated specifications
that adversely affect performance
and/or durability, and alterations or
modifications not recommended or
approved in writing by STIHL
Incorporated,
and
Nreplacement of parts and other
services and adjustments
necessary for required maintenance
at and after the first scheduled
replacement point.
MS 461 R
English
64
STIHL Registered Trademarks
STIHL
®
{
K
The color combination orange-grey
(U.S. Registrations #2,821,860;
#3,010,057, #3,010,058, #3,400,477;
and #3,400,476)
4-MIX
®
AUTOCUT
®
EASYSTART
®
FARM BOSS
®
iCademy
®
MAGNUM
®
MasterWrench Service
®
MotoMix
®
OILOMATIC
®
STIHL Cutquik
®
STIHL DUROMATIC
®
STIHL Quickstop
®
STIHL ROLLOMATIC
®
STIHL WOOD BOSS
®
TIMBERSPORTS
®
WOOD BOSS
®
YARD BOSS
®
Some of STIHL’s Common Law
Trademarks
BioPlus™
Easy2Start™
EasySpool ™
ElastoStart™
Ematic™
FixCut ™
HT Plus ™
IntelliCarb ™
Master Control Lever™
Micro ™
Pro Mark™
Quad Power ™
Quiet Line ™
STIHL Arctic ™
STIHL Compact™
STIHL HomeScaper Series ™
STIHL Interchangeable Attachment
Series™
STIHL M-Tronic™
STIHL MiniBoss ™
STIHL MotoPlus 4™
STIHL Multi-Cut HomeScaper Series ™
STIHL OUTFITTERS™
STIHL PICCO ™
STIHL PolyCut™
STIHL PowerSweep ™
STIHL Precision Series ™
STIHL Protech ™
STIHL RAPID™
STIHL SuperCut ™
STIHL Territory™
TapAction ™
TrimCut™
This listing of trademarks is subject to
change.
Any unauthorized use of these
trademarks without the express written
consent of
ANDREAS STIHL AG & Co. KG,
Waiblingen is strictly prohibited.
Trademarks
TM
STIHL
Injection
Manual de instrucciones originalImpreso en papel libre de cloro.
Las tintas contienen aceites vegetales, el papel es reciclable.
consiste de un portalima con lima redonda, una lima cuadrada ahusada y el calibrador de afilado
MS 461 R
español / EE.UU
125
Información para mantenimiento
La información dada a continuación corresponde bajo condiciones normales de funcionamiento. Los
intervalos especificados deberán acortarse en consecuencia si se trabaja por un tiempo más prolon-
gado que lo normal cada día o bajo condiciones difíciles (polvo excesivo, madera muy resinosa,
madera de árboles tropicales, etc.). Si la máquina se usa sólo ocasionalmente, los intervalos pueden
extenderse en consecuencia.
antes de comenzar el trabajo
al final del trabajo y/o
diariamente
al volver a cargar el tanque
con combustible
semanalmente
mensualmente
anualmente
si falla
si tiene daños
según se requiera
Máquina completa
Inspección visual (condición general, fugas)XX
LimpiarX
Gatillo, bloqueo del gatillo. palanca de control
maestro
Revisión funcionalXX
Freno de la cadena
Revisión funcionalXX
solicite al concesionario especializado su
revisión
1)
X
Recogedor de combustible/filtro en el tanque de
combustible
RevisarX
limpie, cambie el inserto de filtroXX
ReemplazarXXX
Tanque de combustibleLimpiarX
Lubricación del tanque de aceiteLimpiarX
Lubricación de la cadenaRevisarX
Cadena de aserrado
revise, preste atención al afiladoXX
Revise la tensión de la cadenaXX
afilarX
Espada
revise (desgaste, daño)X
limpie e inviertaX
quite las rebabasX
ReemplazarXX
Piñón de la cadenaRevisarX
Filtro de aire
LimpiarXX
ReemplazarX
MS 461 R
español / EE.UU
126
Elementos antivibración
Revisar XX
solicite al concesionario especializado su
sustitución
1)
X
Aberturas de admisión de aire de enfriamientoLimpiarX
Aletas del cilindroLimpiarXX
Carburador
Comprobar el ajuste de marcha en vacío – la
cadena no debe girar
XX
Ajuste de la velocidad de marcha en vacíoX
Bujía
ajustar la distancia entre electrodosX
Cambie después de cada 100 horas de
funcionamiento
Todos los tornillos, tuercas y pernos accesibles
(no los tornillos de ajuste)
2)
Volver a apretarX
Chispero (presente solamente en algunos países)
Revisar
1)
X
Limpiar o sustituir de ser necesario
1)
X
Gancho retenedor de la cadena
RevisarX
ReemplazarX
Cavidad de escape
descarbonizar después de 139 horas de funcio-
namiento, y luego cada 150 horas
X
Etiqueta de información de seguridadReemplazarX
1)
STIHL recomienda acudir a un concesionario STIHL para servicio
2)
Durante el uso inicial de motosierras profesionales (con una potencia entregada de 3,4 kW o más), apriete los tornillos del bloque de cilindros cada 10 a 20
horas de funcionamiento
La información dada a continuación corresponde bajo condiciones normales de funcionamiento. Los
intervalos especificados deberán acortarse en consecuencia si se trabaja por un tiempo más prolon-
gado que lo normal cada día o bajo condiciones difíciles (polvo excesivo, madera muy resinosa,
madera de árboles tropicales, etc.). Si la máquina se usa sólo ocasionalmente, los intervalos pueden
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