Stihl ms 192t User manual

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STIHL MS 192 T Instruction Manual
Manual de instrucciones
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.
Warning!
To reduce the risk of kickback injury use
STIHL reduced kickback bar and STIHL
PMMC3 (3/8" Picco) or PMC3 (3/8" Picco)
chain depending on sprocket pitch or other
available low kickback components.
Advertencia!
Para reducir el riesgo de lesionarse como
resultado de un culatazo, utilice la barra de
contragolpe reducido y la cadena PMMC3
(Picco de 3/8 pulg) o PMC3 (Picco de 3/8 pulg)
de STIHL, dependiendo de la rueda dentada
usada y de otros componentes reductores de
contragolpe.

Instruction Manual
1 - 54
Manual de instrucciones
55 - 115

Original Instruction ManualPrinted on chlorine-free paper
Printing inks contain vegetable oils, paper can be recycled.
© ANDREAS STIHL AG & Co. KG, 2011 0458-217-8621-B. VA1.J11. 0000000707_011_GB
MS 192 T, MS 192 TC
English
1
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Contents
This manual contains operating and
safety instructions for all STIHL
Professional Tree Service Chain Saws.
A professional tree service chain saw is
designed especially for in-tree
maintenance, tree surgery and other
cutting work in confined spaces such as
a lift-bucket.
Allow only persons who fully understand
this manual to operate your chain saw.
To receive maximum performance and
satisfaction from your STIHL chain saw,
it is important that you read, understand
and follow the safety precautions and
the operating and maintenance
instructions in chapter "Safety
Precautions for Chain saw Users" and
"Safety Precautions" before using your
chain saw. For further information you
can go to www.stihlusa.com.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 3
Cutting Attachment 19
Mounting the Bar and Chain 20
Tensioning the Saw Chain (side
chain tensioner) 21
Checking Chain Tension 21
Fuel 22
Fueling 23
Chain Lubricant 24
Filling Chain Oil Tank 25
Checking Chain Lubrication 25
Chain Brake 26
Information Before You Start 27
Starting / Stopping the Engine 27
Operating Instructions 30
Taking Care of the Guide Bar 31
Air Filter System 32
Cleaning the Air Filter 32
Engine Management 33
Adjusting the Carburetor 33
Spark Arresting Screen in Muffler 34
Checking the Spark Plug 34
Replacing the Starter Rope and
Rewind Spring 35
Storing the Machine 38
Checking and Replacing the Chain
Sprocket 38
Maintaining and Sharpening the
Saw Chain 39
Maintenance and Care 43
Main Parts 45
Specifications 47
Special Accessories 48
Ordering Spare Parts 49
Maintenance and Repairs 49
STIHL Incorporated Federal
Emission Control Warranty
Statement 49
STIHL Incorporated California
Exhaust and Evaporative
Emissions Control Warranty
Statement 51
Trademarks 53
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.

MS 192 T, MS 192 TC
English
2
Pictograms
The meanings of the pictograms
attached to or embossed on the
machine are explained in this manual.
Depending on the model concerned, the
following pictograms may be on your
machine.
Symbols in Text
Many operating and safety instructions
are supported by illustrations.
The individual steps or procedures
described in the manual may be marked
in different ways:
NA bullet marks a step or procedure.
A description of a step or procedure that
refers directly to an illustration may
contain item numbers that appear in the
illustration. Example:
NLoosen the screw (1).
NLever (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:
Engineering Improvements
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 differs from those
described in this manual, please contact
your STIHL dealer for assistance.
Guide to Using this Manual
Fuel tank; fuel mixture of
gasoline and engine oil
Chain oil tank; chain oil
Engaging and disengag-
ing the STIHL Quickstop
chain brake
Direction of chain rotation
Ematic; chain oil quantity
control
Tension the chain
Intake air preheating for
winter operation
Intake air for summer
operation
Handle heating
Operate decompression
valve
Operate manual fuel
pump
Danger!
Indicates an imminent risk of severe or
fatal injury.
Warning!
Indicates a hazardous situation which, if
not avoided, could result in severe or
fatal injury.
Caution!
Indicates a risk of property damage,
including damage to the machine or its
individual components.

MS 192 T, MS 192 TC
English
3
This top handle chain saw is designed
specifically for tree surgery and
maintenance in the tree.
The increased risk includes injuries due
to uncontrolled reactive forces of the
chain saw or leg injuries due to the saw
"dropping" at the end of the cut.
Regular chain saws (with wider spaced
handles) are recommended for all other
cutting work at ground level.
Never work in a tree unless you have
received specific, professional training
for such work, including training in the
use of the safety and other climbing
equipment, such as harnesses, ropes,
belts, climbing irons, snap hooks,
carabiners, etc.
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.
Use your chain saw only for cutting
wooden objects.
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.
Safe use of a chain saw involves
1the operator
2the power tool
3the use of the power tool.
Safety Precautions and
Working Techniques
Due to the special com-
pact handle design
(closely spaced handles),
there is an increased risk
of injury from loss of
control.
For this reason
these special
chain saws should
be used only for
work in a tree by
persons who are
trained in special
cutting and work-
ing techniques and
who are properly
secured (lift
bucket, ropes,
safety harness)
Warning!
Working in a tree requires the use of
special cutting and working techniques
which must be observed in order to
reduce the increased risk of personal
injury.
The use of any chain saw
may be hazardous. The
saw chain has many
sharp cutters. If the cut-
ters contact your flesh,
they will cut you, even if
the chain is not moving.
It is important that you
read, fully understand
and observe the following
safety precautions and
warnings. Read the
instruction manual and
the safety instructions
periodically. Careless or
improper use may cause
serious or fatal injury.
Warning!
Reactive forces, including kickback, can
be dangerous. Pay special attention to
the section on reactive forces.
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.
Warning!
Do not use it for other purposes, since
misuse may result in personal injury or
property damage, including damage to
the machine.
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.

MS 192 T, MS 192 TC
English
4
THE OPERATOR
Physical Condition
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.
These conditions reduce the hand's
ability to feel and regulate temperature,
produce numbness and burning
sensations and may cause nerve and
circulation damage and tissue necrosis.
All factors which contribute to
whitefinger 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:
–Most STIHL power tools are
available with an anti-vibration
("AV") system designed to reduce
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.
–Wear gloves and keep your hands
warm. Heated handles, which are
available on some STIHL
powerheads, are recommended for
cold weather use.
–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
saw chain sharp. A dull chain will
increase cutting time, and pressing
a dull chain through wood will
increase the vibrations transmitted
to your hands.
–Maintain a firm grip at all times, but
do not squeeze the handles with
constant, excessive pressure. Take
frequent breaks.
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.
Proper Clothing
Warning!
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.
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.
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.
Warning!
To reduce the risk of injury, the operator
should wear proper protective apparel.
Clothing must be sturdy
and snug-fitting, but allow
complete freedom of
movement. To reduce the
risk of cut injuries, wear
overalls, long pants or
chaps that contain pads
of cut-retardant material,
depending on the indidi-
vidual application. Avoid
loose-fitting jackets,
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.

MS 192 T, MS 192 TC
English
5
Never operate your power tool unless
wearing goggles or properly fitted
protective glasses with adequate top
and side protection complying with ANSI
Z 87.1 (or your applicable national
standard).
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
Any crew member in the cutting area
should also wear proper protective
clothing, especially hard hats, to protect
their heads.
THE POWER TOOL
For illustrations and definitions of the
power tool parts see the chapter on
"Main Parts".
THE USE OF THE POWER TOOL
Transporting the Power Tool
By hand: When carrying your saw by
hand, the engine must be switched off
and the saw must be in the proper
position. Grip the top handle and place
the muffler away from the body. The
chain guard (scabbard) should be over
the chain and guide bar, which should
point backwards.
By vehicle: When transporting in a
vehicle, keep chain and bar covered with
the chain guard. Properly secure your
saw to prevent turnover, fuel spillage
and damage to the saw.
Fuel
Your STIHL power tool uses an oil-
gasoline mixture for fuel (see chapter on
"Fuel" of your instruction manual).
Good footing is very
important. Wear sturdy
boots with nonslip soles.
Steel-toed safety boots
suitable for climbing in
trees are recommended.
Always wear gloves
when handling the
machine and the cutting
tool. Heavy-duty, nonslip
gloves improve your grip
and help to protect your
hands.
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
regularly.
Use proper equipment at
all times to protect your-
self from falling.
Warning!
Never operate your power tool if it is
damaged, improperly adjusted or main-
tained, or not completely or securely
assembled.
Warning!
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 powerhead, their use may, in
fact, be extremely dangerous.
Warning!
Always stop the engine before putting a
chain saw down or carrying it. Carrying
a chain saw with the engine running is
extremely dangerous. Accidental accel-
eration of the engine can cause the
chain to rotate. Always engage the
chain brake when taking more than a
few steps.
0012BA024 KN

MS 192 T, MS 192 TC
English
6
Fueling Instructions
In order to reduce the risk of burns and
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap on your power tool carefully so as to
allow any pressure build-up in the tank
to release slowly. Never remove the fuel
filler cap while the engine is running.
Select bare ground for fueling and move
at least 10 feet (3 m) from the fueling
spot before starting the engine. Wipe off
any spilled fuel before starting your
machine.
Toolless cap with grip
To do this with this STIHL cap, raise the
grip on the top of the cap until it is upright
at a 90° angle. Insert the cap in the fuel
tank opening with the raised positioning
marks on the grip of the cap and on the
fuel tank opening lining up. Using the
grip, press the cap down firmly while
turning it clockwise as far as it will go
(approx. 1/4 turn).
Misaligned, damaged or broken cap
NIf the cap does not drop fully into the
opening when the positioning marks
line up and/or if the cap does not
tighten properly when twisted, the
base of the cap may be prematurely
rotated (in relation to the top) to the
closed position. Such misalignment
can result from handling, cleaning
or an improper attempt at
tightening.
Warning!
Gasoline is an extremely
flammable fuel. If spilled
and ignited by a spark or
other ignition source, it
can cause fire and seri-
ous burn injury or
property damage. Use extreme caution
when handling gasoline or fuel mix. Do
not smoke or bring any fire or flame near
the fuel or the power tool. Note that
combustible fuel vapor may escape
from the fuel system.
Warning!
Fuel your power tool in well-ventilated
areas, outdoors. Always shut off the
engine and allow it to cool before refu-
eling. Gasoline vapor pressure may
build up inside the fuel tank depending
on the fuel used, the weather conditions
and the tank venting system.
Warning!
Check for fuel leakage
while refueling and dur-
ing operation. If fuel
leakage is found, do not
start or run the engine
until the leak is fixed and
any spilled fuel has been wiped away.
Take care not to get fuel on your cloth-
ing. If this happens, change your
clothing immediately.
Warning!
In order to reduce the risk of fuel spill-
age and fire from an improperly
tightened fuel cap, correctly position
and tighten the fuel cap in the fuel tank
opening.
001BA220 KN
Fold the grip flush with
the top of the cap. Grip
the cap and check for
tightness. If the grip does
not lie completely flush
with the cap and the
detent on the grip does
not fit in the correspond-
ing recess in the filler
opening, or if the cap is
loose in the filler opening,
the cap is not properly
seated and tightened and
you must repeat the
above steps.
Left: Base of cap in closed posi-
tion (with open space)
Right: Base of cap correctly posi-
tioned for installation
001BA227 KN

MS 192 T, MS 192 TC
English
7
NTo return the cap to the open
position for installation, turn the cap
(with the grip up) until it drops fully
into the tank opening. Next, twist the
cap counterclockwise as far as it will
go (approx. 1/4 turn) – this will twist
the base of the cap into the correct
position. Then, twist the cap
clockwise, closing it normally.
NIf your cap still does not tighten
properly, it may be damaged or
broken; immediately stop use of the
unit and take it to your authorized
STIHL dealer for repair.
See also the "Fueling" chapter in your
Instruction Manual for additional
information.
Before Starting
Take off the chain guard (scabbard) and
inspect the saw for proper condition and
operation. (See the maintenance chart
near the end of the instruction manual.)
For proper assembly of the bar and
chain follow the procedure described in
the chapter "Mounting the Bar and
Chain" of your instruction manual.
STIHL Oilomatic chain, guide bar and
sprocket must match each other in
gauge and pitch. Before replacing any
bar and chain, see the chapter entitled
"Specifications" in the instruction
manual and the section "Kickback" and
the "ANSI B 175.1-2000 chain saw
kickback standard" below.
Since longer bars add weight and may
be more difficult to control, select the
shortest bar that will meet your cutting
needs. Check the throttle trigger and
throttle trigger lockout for smooth action
– throttle trigger must return
automatically to idle position. The
Master Control lever / stop switch must
move easily to STOP and 0.
Keep the handles clean and dry at all
times; it is particularly important to keep
them free of moisture, pitch, oil, fuel mix,
grease or resin in order for you to
maintain a firm grip and properly control
your power tool.
Starting
Start and operate your saw without
assistance. For specific starting
instructions, see the appropriate section
of the instruction manual. Proper starting
methods reduce the risk of injury.
001BA226 KN
Warning!
Always check your power tool for proper
condition and operation before starting,
particularly the throttle trigger, throttle
trigger lockout, stop switch and cutting
attachment. The throttle trigger must
move freely and always spring back to
the idle position. Never attempt to mod-
ify the controls or safety devices.
Warning!
Check that the spark plug boot is
securely mounted on the spark plug – a
loose boot may cause arcing that could
ignite combustible fumes and cause a
fire.
Warning!
Proper tension of the chain is extremely
important. In order to avoid improper
setting, the tensioning procedure must
be followed as described in your man-
ual. Always make sure the hexagonal
nut(s) for the sprocket cover is (are)
tightened securely after tensioning the
chain in order to secure the bar. Never
start the saw with the sprocket cover
loose. Check chain tension once more
after having tightened the nut(s) and
thereafter at regular intervals (whenever
the saw is shut off). If the chain
becomes loose while cutting, shut off
the engine and then tighten. Never try to
adjust the chain while the engine is
running!
Warning!
To reduce the risk of fire and burn inju-
ries, start the engine at least 10 feet
(3 m) from the fueling spot, outdoors
only.

MS 192 T, MS 192 TC
English
8
Place the chain saw on firm ground or
other solid surface in an open area.
Maintain good balance and secure
footing.
Once the engine has started,
immediately blip the throttle trigger,
which should release the Master Control
lever to the run position and allow the
engine to slow down to idle.
Important Adjustments
If you cannot set the correct idle speed,
have your STIHL dealer check your
power tool and make proper
adjustments and repairs.
During Operation
Holding and Controlling the Power Tool
Always hold the saw firmly with both
hands when the engine is running. Place
your left hand on the front handle bar
and your right hand on the control
handle and throttle trigger. Left-handers
should follow these instructions too.
Wrap your fingers tightly around the
handles, keeping the handles cradled
between your thumb and forefinger.
With your hands in this position, you can
best oppose and absorb the push, pull
Warning!
To reduce the risk of injury from chain
contact and/or reactive forces, the chain
brake must be engaged when starting
the saw.
Warning!
Do not drop start. This method is very
dangerous because you may lose con-
trol of the saw.
0012BA008 KN
Warning!
Be sure that the guide bar and chain are
clear of you and all other obstructions
and objects, including the ground. When
the engine is started, the engine speed
with the starting throttle lock engaged
will be fast enough for the clutch to
engage the sprocket and, if the chain
brake is not activated, turn the chain. If
the running chain near the upper quad-
rant of the tip of the bar touches any
object, it may cause kickback to occur
(see section on reactive forces). To
reduce this risk, always engage the
chain brake before starting. Never
attempt to start the chain saw when the
guide bar is in a cut or kerf.
Warning!
When you pull the starter grip, do not
wrap the starter rope around your hand.
Do not let the grip snap back, but guide
the starter rope to rewind it properly.
Failure to follow this procedure may
result in injury to your hand or fingers
and may damage the starter
mechanism.
Warning!
To reduce the risk of personal injury
from loss of control and/or contact with
the running cutting attachment, do not
use your unit with incorrect idle adjust-
ment. At correct idle speed, the cutting
attachment should not move. For direc-
tions on how to adjust idle speed, see
the appropriate section of your instruc-
tion manual.
0012BA019 KN
H
L