Stihl MS 461 R Manuale utente
STIHL MS 461 R Instruction Manual
Notice d’emploi
Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2019
0458-180-8221-A. VA2.A19.
0000006424_004_GB
MS 461 R
English
1
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
Dear Customer,
Thank you for choosing a quality
engineered STIHL product.
It has been built using modern
production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and trouble-free use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
Your
Dr. Nikolas Stihl
Guide to Using this Manual 2
Safety Precautions 2
Mounting the depth limiter 3
Adjusting Cutting Depth 3
Chain lubrication 4
Converting a chain saw 4
Tensioning the saw chain (depth
limiter installed) 7
Checking the chain tension (depth
limiter installed) 7
Maintaining and Sharpening the
Saw Chain 8
Main Parts 10
Disposal 12
MS 461 R
English
2
Symbols in text
WARNING
Warning where there is a risk of an
accident or personal injury or serious
damage to property.
NOTICE
Caution where there is a risk of
damaging the machine or its individual
components.
Engineering improvements
STIHL's philosophy is to continually
improve all of its products. For this
reason we may modify the design,
engineering and appearance of our
products periodically.
Therefore, some changes, modifications
and improvements may not be covered
in this manual.
The -STIHL rescue saw is designed
specially for use in rescue service (e.g.
Fire Brigade, technical relief
organization, disaster control etc).
Only specially instructed and trained
personnel should be allowed to operate
the STIHL rescue saws in rescue
operations, because, apart from
handling the chainsaws, it is necessary
to estimate the circumstances and
dangers.
Using the STIHL Rescue Saws requires
special working techniques. Failure to
observe them can be fraught with
increased danger of accident for the
user or the person to be rescued.
This instruction manual supplements the
standard instruction manual for the basic
chainsaws. It describes where it differs
from the standard instruction manual.
Please read both instruction manuals
carefully, before commissioning the
equipment.
Failure to observe the safety instructions
can be fatal.
Filling fuel constitutes a fire hazard.
The special bar and chain (carbide saw
chain) cuts thin metal sheets, tar paper,
lightweight masonry, insulation material,
roofing panels, glass (e.g. ICE
windows), nails etc.
Use dust protection or respirator to
protect from cutting dust and glass dust.
Do not fail to put on personal protective
hear, as described in this instruction
manual, before starting work. Also wear
additional face shield and protective
goggles.
Flying splintered parts increase the risk
of injury. They can have sharp edges
and their high density gives them higher
kinetic energy than wooden splinters.
The cut depth limiter allows fire fighters
to precisely place return air openings in
roofs and cladding structures in positive
pressure ventilation.
The special application-related
functioning of the rail head can pose a
higher kickback risk.
In every separation procedure, take into
consideration the statics of the
separated construction; when working
on the roof ensure that neither the
person nor the roof structure collapses.
Another application is searching for
sources of fire, especially in smoldering
roofs of industrial and commercial
buildings.
The HD2 filter ensures excellent filtering
performance even under extreme
conditions in rescue operations.
Guide to Using this Manual Safety Precautions
MS 461 R
English
3
NMount the bar and chain – see
instruction manual of basic
chainsaw.
NPush the guard (1) over the guide
bar and fit the screws (2).
NSlide the depth limiter (3) onto the
guard.
NFit the star knob screw (4) with
washer (5).
NTighten down the screws (2).
NPull the depth limiter (3) forwards as
far as stop.
NTighten down the star knob (4).
The cutting depth is infinitely variable
from a few millimeters to about 20 cm.
Before adjusting the cutting depth:
NShut off the engine.
NEngage the chain brake by pushing
the hand guard (1) towards the bar
nose – this locks the chain in
position.
NPlace the chainsaw on the ground,
put the heel of your right foot on the
rear hand guard and press down.
Mounting the depth limiter
3
2
4
5
3443BA030 KN
3
4
3443BA031 KN
Adjusting Cutting Depth
MS 461 R
English
4
NGrip the handle on top of the depth
limiter with your right hand and
loosen the star knob (2) with your
left hand.
NSet the depth limiter to the required
cutting depth (arrow) and tighten
down the star knob (2) firmly.
NDisengage the chain brake.
Adjusting the delivery rate
NTurn adjusting screw (on the bottom
of the machine) to the right as far as
it will go = maximum delivery rate
Chain lubricant
Because of the anticipated long periods
of disuse, a partly synthetic chain
lubricant, e. g., STIHL Chain and Bar
Lubricant.
Removing the handlebar
NRemove the screws (1).
NLift away the handlebar (2) to the
rear.
3443BA032 KN
2
Chain lubrication
147BA012 KN
E
Converting a chain saw
11
147BA005 KN
2
11
MS 461 R
English
5
Fitting the holder
NCoat inside of hole (a) with STIHL
OH 723 press fluid or washing-up
liquid.
NPush the holder (2) onto the wrap-
around handlebar so that the
recess (b) is as shown in the
illustration.
NPosition the holder (2) with the
recess (b) as shown in the
illustration.
Assembling wrap-around handlebar
NPush bracket (3) onto center
strut (4) and secure to end (5) of
handlebar with M5x20 screw (6)
and washer (7).
Mounting wrap-around handlebar
NSlip the handlebar (b) over the saw
from the rear and bring it into
position.
NFit the P6x32.5 screws (2).
NInsert and tighten down the existing
P6x19 screws (3).
NFit the combination wrench in the
holder.
179BA039 KN
a
2b
4
5
3
147BA006 KN
67
MS 461 R
English
6
Cutting attachment
NUnscrew the nuts (1) and remove
the sprocket cover (2).
NRemove the bar and chain – see
chapter on "Mounting the Bar and
Chain" in instruction manual of saw
you are using.
Installing the guard plate
NRemove the screw (1) and nut (2).
NTake out the screw (3).
NRemove the spiked bumper (4) and
chain catcher (5).
NTake out the screw (6).
NCoat screw (7) from conversion kit
with Loctite 243 or equivalent
adhesive and install.
NFit the guard plate (8) with screw (1)
and nut (2).
NCoat the M5x12 screw (9) from
conversion kit with Loctite 243 or
equivalent adhesive.
NFit the screw (9) with washer (10) –
washer is supplied only with a
slotted guard plate and is required
only in such a case.
NMount the chain catcher (5) with
screw (3).
NTighten down the screws and nut
firmly in a crosswise pattern.
Chain sprocket cover
NTo mount the bar and chain, use the
chain sprocket cover from the
conversion kit – the spacer
washers (2), cover (3) and spiked
bumper (4) must be fitted.
NMount the bar and chain – see
instruction manual of basic
chainsaw.
NMount the depth limiter – see
"Mounting the depth limiter".
11
147BA008 KN
2
10
3
1
9
2
5
8
147BA017 KN
MS 461 R
English
7
NShut off the engine.
NWear work gloves to protect your
hands.
NLoosen the star knob (1).
NSlide the depth limiter (2) back
against the engine.
NLoosen the nuts (3).
NHold the bar nose up.
NUse a screwdriver to turn the
tensioning screw (4) clockwise until
the chain fits snugly against the
underside of the bar.
NWhile still holding the bar nose up,
tighten down the nuts firmly.
NGo to "Checking Chain Tension".
A new chain has to be retensioned more
often than one that has been in use for
some time.
NCheck chain tension frequently –
see chapter on "Operating
Instructions" in instruction manual of
basic chainsaw.
NShut off the engine.
NWear work gloves to protect your
hands.
NLoosen the star knob (1).
NSlide the depth limiter (2) back
against the engine.
NThe chain must fit snugly against
the underside of the bar and it must
still be possible to pull the chain
along the bar by hand when the
chain brake is released.
NIf necessary, retension the chain.
A new chain has to be retensioned more
often than one that has been in use for
some time.
Tensioning the saw chain
(depth limiter installed)
1
3443BA033 KN
2
33
4
3443BA034 KN
Checking the chain tension
(depth limiter installed)
1
3443BA033 KN
2
3443BA035 KN
MS 461 R
English
8
NCheck chain tension frequently –
see chapter on "Operating
Instructions" in instruction manual of
basic chainsaw.
NAdjust cutting depth.
Never use a dull or damaged saw chain
– this leads to increased physical strain,
increased vibration load, unsatisfactory
cutting results and increased wear.
NClean the saw chain
NCheck the saw chain for cracks and
damaged rivets
NReplace damaged or worn chain
components and adapt these parts
to the remaining parts in terms of
shape and level of wear – rework
accordingly
WARNING
Compliance with the angles and
dimensions listed below is absolutely
necessary. An improperly sharpened
saw chain – especially depth gauges
that are too low – can lead to increased
kickback tendency of the chain saw –
risk of injury!
Saw chain 36 RDR
ASharpening angle 15°
BSide plate angle 85°
To sharpen the carbide-tipped saw
chain, use only the USG universal
sharpener with a diamond wheel. When
doing so, proceed according to the USG
Instruction Manual.
The angles must be identical for all
cutters in the saw chain. Varying angles:
Rough, uneven running of the saw
chain, increased wear – even to the
point of saw chain breakage.
All cutters must be equally long.
With varying cutter lengths, the cutter
heights also vary and cause rough
running of the saw chain and chain
breakage.
NAll cutters must be ground down
equal to the length of the shortest
cutter
Depth gauge setting
The depth gauge determines the chip
thickness.
aRequired distance between depth
gauge and cutting edge (0.65 mm)
Lowering the depth gauges
The depth gauge setting is lowered
when the cutter is sharpened.
Maintaining and Sharpening
the Saw Chain
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