Guide to Using this Manual2
Safety Precautions3
Reactive Forces8
Working Techniques10
Cutting Attachment11
Mounting the Bar and Chain12
Tensioning the Saw Chain (side
chain tensioner)13
Original Instruction ManualPrinted on chlorine-free paper
Checking Chain Tension13
Fuel14
Fueling15
Chain Lubricant18
Filling Chain Oil Tank19
Checking Chain Lubrication19
Chain Brake20
Information Before You Start21
Starting / Stopping the Engine21
Operating Instructions24
Taking Care of the Guide Bar25
Air Filter System26
Cleaning the Air Filter26
Adjusting the Carburetor27
Printing inks contain vegetable oils, paper can be recycled.
Spark Arresting Screen in Muffler28
Checking the Spark Plug29
Rewind Starter30
Storing the Machine30
Checking and Replacing the Chain
Sprocket30
Maintaining and Sharpening the
Saw Chain31
Maintenance and Care35
Minimize Wear and Avoid Damage37
Main Parts38
Specifications39
Special Accessories40
Ordering Spare Parts40
Maintenance and Repairs41
Disposal41
EC Declaration of Conformity41
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 troublefree use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
1
English
Guide to Using this Manual
This Instruction Manual refers to a
STIHL chain saw, also called a machine
in this Instruction Manual.
Pictograms
Pictograms that appear on the machine
are explained in this Instruction Manual.
Depending on the machine and
equipment version, the following
pictograms may appear on the machine.
Fuel tank; fuel mixture of
gasoline and engine oil
Tank for chain oil; chain
oil
Engage and release
chain brake
Coasting brake
Intake air baffle: winter
operation
Intake air baffle: summer
operation
Handle heating
Actuate decompression
valve
Actuate manual fuel
pump
Symbols in text
WARNING
Warning where there is a risk of an
accident or personal injury or serious
damage to property.
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.
Direction of chain travel
Ematic; chain oil flow
adjustment
Tension saw chain
2
NOTICE
Caution where there is a risk of
damaging the machine or its individual
components.
MS 192 T, MS 192 TC
English
Safety Precautions
This special chain
saw may be used
only by persons
who are trained in
special cutting and
working
techniques.
Due to the special handle
design (closely spaced
handles) there is an
increased risk of injury
using this kind of saw (cut
injuries due to uncon
trolled reactive forces of
the chainsaw). Special
safety precautions must
be observed to reduce
the risk of personal injury
when working with a
chainsaw because of the
very high chain speed
and very sharp cutters.
It is important that you
read the instruction man
ual before first use and
keep it in a safe place for
future reference. Nonobservance of the
instruction manual may
result in serious or even
fatal injury.
General
Observe all application local safety
regulations, standards and ordinances.
-
The use of noise emitting power tools
may be restricted to certain times by
national or local regulations.
-
If you have not used this model before:
Have your dealer or other experienced
user show you how to operate your unit
or attend a special course in its
operation.
Minors should never be allowed to use a
chainsaw. Exceptions to this rule are
young persons older than 16 who have
been trained in special cutting
techniques with the tree surgery saw.
Keep bystanders, especially children,
and animals away from the work area.
The user is responsible for avoiding
injury to third parties or damage to their
property.
Do not lend or rent your chainsaw
without the instruction manual. All users
must be specially trained in tree surgery
work with a tree surgery saw and be
familiar with this model and its operation.
To operate a chainsaw you must be
rested, in good physical condition and
-
mental health. If you have any condition
that might be aggravated by strenuous
work, check with your doctor before
operating a chainsaw.
Do not operate the chainsaw if you are
under the influence of any substance
(drugs, alcohol) which might impair
vision, dexterity or judgment.
To reduce the risk of accidents or injury,
put off the work in poor weather
conditions (rain, snow, ice, wind).
Persons with pacemakers only: The
ignition system of your chainsaw
produces an electromagnetic field of a
very low intensity. This field may
interfere with some pacemakers. To
reduce health risks, STIHL recommends
that persons with pacemakers consult
their physician and the pacemaker
manufacturer before operating this tool.
Intended Use
Tree surgery chainsaws are specialpurpose saws equipped with a top
handle. They are designed specifically
for tree surgery and maintenance in the
crown of the standing tree.
Chainsaw operators must be properly
secured while working in a tree (e.g. lift
bucket, personal safety equipment,
safety harness).
The chainsaw may be used for cutting
wood and wooden objects only.
It must not be used for any other
purpose because of the increased risk of
accidents.
They must not be used for felling trees or
cutting firewood. Normal chainsaws with
wider spaced handles are
recommended for such operations.
Never attempt to modify your saw in any
way since this may increase the risk of
personal injury. STIHL excludes all
liability for personal injury and damage
to property caused while using
unauthorized attachments.
Clothing and Equipment
Wear proper protective clothing and
equipment.
MS 192 T, MS 192 TC
3
English
0012BA024 KN
Clothing must be sturdy
but allow complete free
-
dom of movement. Wear
snug-fitting clothing with
cut retardant inserts for
the feet, legs and fore
-
arms – a safety
combination, not a coat.
Avoid clothing that could get caught on
branches or brush or moving parts of the
saw. Do not wear a scarf, necktie or
jewelry. Tie up and confine long hair
(e.g. with a hair net, cap, hard hat, etc.).
Wear steel-toed safety
boots with cut retardant
inserts and non-slip
soles.
Wear a safety hard hat
with a chin strap where
there is a danger of head
injuries from falling
objects. Wear safety
glasses or a face shield
and hearing protection,
e.g. earplugs or ear
muffs.
Wear heavy-duty work
gloves made of durable
material (e.g. leather) –
with cut-retardant inserts.
STIHL offers a comprehensive range of
personal protective clothing and
equipment.
Use personal fall protection equipment.
Use only certified equipment that is
suitable for the application concerned.
Check the condition of the equipment
before each use and replace any
damaged parts.
Transporting
Always stop the engine, engage the
chain brake and fit the chain guard
(scabbard) before carrying the saw short
distances. This avoids the risk of the
chain running unintentionally.
Always carry the saw by the control
handle – with the hot muffler away from
your body – the guide bar must point to
the rear. To reduce the risk of serious
burn injuries, avoid touching hot parts of
the machine, especially the surface of
the muffler.
In vehicles: Properly secure your saw to
prevent turnover, fuel spillage and
damage.
Cleaning
Clean plastic parts with a cloth. Harsh
detergents can damage the plastic.
Clean the dust and dirt off the machine –
do not use any grease solvents for this
purpose.
Clean the ventilation slots if necessary.
Do not use a high-pressure cleaner to
clean the machine. The hard jet of water
can damage parts of the machine.
Accessories
Only use those tools, guide bars, chains,
chain sprockets, accessories or
technically equivalent components that
have been approved by STIHL for this
machine. If you have any questions in
this respect, consult a servicing dealer.
Use only high quality tools and
accessories. Otherwise, there may be a
risk of accidents and damage to the
machine.
STIHL recommends the use of genuine
STIHL tools, guide bars, chains, chain
sprockets and accessories. They are
specifically designed to match your
model and meet your performance
requirements.
Refuelling
Petrol is an extremely
flammable fuel – keep
clear of naked flames and
fire – do not spill any fuel
– no smoking.
Switch off the engine before refuelling.
Never refuel the machine while the
engine is still hot – the fuel may spill over
– risk of fire!
Open the fuel filler cap carefully so that
any excess pressure is relieved
gradually and fuel does not splash out.
4
MS 192 T, MS 192 TC
English
The machine may only be refuelled in a
well ventilated place. Clean the machine
immediately if fuel is spilled. Do not spill
fuel over your clothing – contaminated
clothing must be changed immediately.
The machines can be equipped with the
following filler caps as standard:
Cliplock filler cap (bayonet-type)
Place the cliplock filler
cap (bayonet-type) in
position, turn as far as
stop and fold the cliplock
down.
This helps reduce the risk of unit
vibrations causing an incorrectly
tightened filler cap to loosen or come off
and spill quantities of fuel.
Look out for leaks! Never
start the engine if fuel has
been spilled or is leaking
– Fatal burns may result!
Before Starting Work
Check that your saw is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual.
–Check the fuel system for leaks,
paying special attention to visible
parts such as the tank cap, hose
connections and the manual fuel
pump (on machines so equipped). If
there are any leaks or damage, do
not start the engine – risk of fire.
Have your saw repaired by a
servicing dealer before using it
again.
–Check operation of chain brake,
front hand guard
–Correctly mounted guide bar
–Correctly tensioned chain
–The trigger and trigger lockout must
move freely and spring back to the
idle position when they are
released.
–Master Control lever must move
easily to STOP, 0 or †
–Check that the spark plug boot is
secure – a loose boot may cause
arcing that could ignite combustible
fumes and cause a fire.
–Never attempt to modify the controls
or safety devices in any way.
–Keep the handles dry and clean –
free from oil and dirt – for safe
control of the saw.
–Make sure there is sufficient fuel
and chain oil in the tanks.
To reduce the risk of personal injury, do
not operate your saw if it is damaged or
not properly assembled.
Starting the Saw
Start the saw on level ground only. Make
sure you have a firm footing. Hold the
saw firmly. To reduce the risk of injury
from the rotating chain, check that the
cutting attachment is not touching any
object or the ground .
The chainsaw is a one-person saw. Do
not allow other persons in the work area
– even when starting.
Do not attempt to start the saw when the
saw chain is in a cut.
Starting the saw in a tree is very
dangerous since the user may lose
control of the machine – risk of injury.
The tree surgery saw should be
checked, fueled, started and warmed up
by an assistant on the ground before it is
transported up to the operator in the
tree.
Start the engine at least 3 meters from
the fueling spot, outdoors only.
To reduce risk of chain rotation and
personal injury, lock the chain with the
chain brake before starting.
Do not drop start the power tool – start
the engine as described in the
instruction manual.
During Operation
When working in the tree, always secure
the chainsaw with a rope – tie it to the
ring and attach it to the lifeline. Always
engage the chain brake before letting
the chainsaw hang by the rope.
MS 192 T, MS 192 TC
5
English
0012BA019 KN
H
L
To reduce the risk of
accidents and injuries,
always hold your saw
firmly with both hands:
Right hand on the control
handle, even if you are
left-handed. To ensure
safe control, wrap your
fingers tightly around
both handles.
One-handed operation is
particularly dangerous,
e.g. when cutting dry,
knotty and dead wood,
the chain may not enter
the cut properly. The
resultant reactive forces
may cause the saw to
skate or bounce on the
limb and slide out of
control. This increases
the risk of serious or even
fatal injury.
Use the tree surgery chainsaw with one
hand only:
–if two-handed cutting is not possible
and
–if one hand is required for support
during the cut and
–if the saw is held firmly and
–if all parts of your body are clear of
the cutting attachment.
During one-handed cutting:
–never support yourself on the limb
being cut
–never cut with the bar nose
–never attempt to hold falling limbs
Make sure you always have good
balance and secure footing. To avoid
slipping, take special care when the bark
is wet.
In the event of impending danger or in
an emergency, switch off the engine
immediately – move the Master Control
lever in the direction of STOP, 0 or †.
Never leave a running saw unattended.
Take special care in slippery conditions
– damp, snow, ice, on slopes, uneven
ground and freshly debarked logs.
Watch out for obstacles such as tree
stumps, roots and ditches which could
cause you to trip or stumble.
Do not work alone – keep within calling
distance of other persons trained in first
aid who can provide assistance in an
emergency. Helpers at the cutting site
must also wear protective clothing (hard
hat) and stand well clear of the branches
being cut.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.
The dusts (e.g. sawdust), vapor and
smoke produced during operation may
be dangerous to health. If dust levels are
very high, wear a suitable respirator.
When the engine is running: Note that
the chain continues to rotate for a short
period after you let go of the throttle
trigger (flywheel effect).
To reduce the risk of fire, do not smoke
while operating or standing near your
chainsaw. Note that combustible fuel
vapor may escape from the fuel system.
Check the saw chain at regular short
intervals during operation or
immediately if there is a noticeable
change in cutting behavior:
–Shut off the engine and wait until the
chain comes to a complete
standstill.
–Check condition and proper
mounting.
–Check sharpness.
Do not touch the chain while the engine
is running. If the chain becomes jammed
by an obstruction, switch off the engine
immediately before attempting to
remove the obstruction – risk of injury.
Always shut off the engine before
leaving the saw unattended.
Shut off the engine before changing the
saw chain. This avoids the risk of injury
from the engine starting unintentionally.
To reduce risk of fire, keep hot exhaust
gases and hot muffler away from easily
combustible materials (e.g. wood chips,
bark, dry grass, fuel). Mufflers with a
catalytic converter can become
particularly hot.
6
MS 192 T, MS 192 TC
English
Never operate your saw without proper
chain lubrication – check oil level
regularly during operation. Stop work
immediately if the oil level is too low and
refill the oil tank – see also chapters on
"Filling Chain Oil Tank" and "Checking
Chain Lubrication".
If your saw 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
continuing work – see also "Before
Starting Work".
Check the fuel system in particular for
leaks and make sure the safety devices
are working properly. Do not continue
operating your saw if it is damaged. In
case of doubt, have the unit checked by
your servicing dealer.
Make sure the idle speed setting is
correct. The chain must not run when
the engine is idling with the throttle
trigger released. Check and correct the
idle speed setting regularly. It the chain
continues to rotate when the engine is
idling, have your dealer make proper
adjustments or repairs.
The chain saw produces
poisonous exhaust gases
as soon as the engine
starts. These gases may
be colourless and odour
less and may contain
unburnt hydrocarbons
and benzene. Never work
with the machine indoors
or in poorly ventilated
areas, even if your
machine is equipped with
a catalytic converter.
Ensure proper ventilation when working
in trenches, hollows or other confined
locations – risk of fatal injury from
breathing toxic fumes!
If you feel sick, have a headache, vision
problems (e. g., your field of vision gets
smaller), hearing problems, dizziness or
inability to concentrate, stop work
immediately. Such symptoms may be
caused by an excessively high
concentration of exhaust emissions –
risk of accident!
After finishing work
Switch off the motor, engage the chain
brake and attach the chain scabbard.
Storage
When the machine is not in use, it
should be stored in such a way that noone is endangered. Secure the machine
against unauthorised use.
Store the machine in a safe, dry room.
Vibrations
Prolonged use of the power tool may
result in vibration-induced circulation
-
problems in the hands (whitefinger
disease).
No general recommendation can be
given for the length of usage because it
depends on several factors.
The period of usage is prolonged by:
–Hand protection (wearing warm
gloves)
–Work breaks
The period of usage is shortened by:
–Any personal tendency to suffer
from poor circulation (symptoms:
frequently cold fingers, tingling
sensations).
–Low outside temperatures.
–The force with which the handles
are held (a tight grip restricts
circulation).
Continual and regular users should
monitor closely the condition of their
hands and fingers. If any of the above
symptoms appear (e.g. tingling
sensation in fingers), seek medical
advice.
Maintenance and repairs
Always switch off the engine before any
repair, cleaning or maintenance work
and any work on the chain. Risk of injury
if the engine starts inadvertently!
Exception: adjustment of carburettor
and idle speed.
The machine must be serviced regularly.
Do not attempt any maintenance or
repair work not described in the
Instruction Manual. All other work should
be carried out by a servicing dealer.
STIHL recommends that maintenance
and repair work be carried out only by
authorised STIHL dealers. STIHL
dealers receive regular training and are
supplied with technical information.
Use only high-quality spare parts.
Otherwise, there may be a risk of
accidents and damage to the machine. If
you have any questions in this respect,
consult a servicing dealer.
MS 192 T, MS 192 TC
7
English
0012BA022 KN
H
L
Do not modify the machine in any way –
this may increase the risk of personal
injury –risk of accidents!
To reduce the risk of fire due to ignition
outside the cylinder, move the master
control level to STOP, 0 or † before
turning the engine over on the starter
when the spark plug boot is removed or
the spark plug is unscrewed!
Do not service or store the machine near
a naked flame – risk of fire due to the
fuel.
Check fuel cap regularly for tightness.
Use only spark plugs that are in perfect
condition and have been approved by
STIHL – see "Specifications".
Check ignition lead (insulation in good
condition, secure connection).
Check that the muffler is in perfect
working condition.
Do not use the machine if the muffler is
damaged or missing – risk of fire,
damage to hearing!
Never touch a hot muffler – risk of burns!
The condition of the anti-vibration
elements influences vibration behaviour
– inspect anti-vibration elements
periodically.
Inspect chain catcher – replace if
damaged.
Switch off the engine
–To check the chain tension
–To retension the chain
–To replace the chain
–For remedying malfunctions
Observe sharpening instructions – for
safe and proper handling, always keep
the chain and guide bar in flawless
condition. Keep the chain properly
sharpened, tensioned and well
lubricated.
Change chain, guide bar and chain
sprocket in due time.
Regularly check that the clutch drum is
in perfect working condition.
Always store fuel and chain lubricant
only in the specified type of containers
and ensure they are correctly labelled.
Store in a dry, cool and secure place
protected against light and sunlight.
In the event of a chain brake
malfunction, switch off the machine
immediately – risk of injury! Consult a
servicing dealer – do not use the
machine until the malfunction has been
remedied, see "Chain brake".
Reactive Forces
The most common reactive forces that
occur during cutting are: kickback,
pushback and pull-in.
Dangers of kickback
Kickback can result in
serious or fatal injury.
Kickback occurs when the saw is
suddenly thrown up and back in an
uncontrolled arc towards the operator.
8
MS 192 T, MS 192 TC
English
001BA257 KN
001BA037 KN
A
001BA038 KN
B
Kickback occurs, e.g.
–when the upper quadrant of the bar
nose unintentionally contacts wood
or another solid object, e.g. when
another limb is touched accidentally
during limbing.
–when the chain at the nose of the
guide bar is pinched in the cut.
QuickStop chain brake:
This device reduces the risk of injury in
certain situations – it cannot prevent
kickback. If activated, the brake stops
the saw chain within a fraction of a
second –
for a description of this device refer to
chapter on "Chain Brake" in this manual.
–Do not cut with the bar nose.
–Take special care with small, tough
limbs, they may catch the chain.
–Never cut several limbs at once.
–Do not overreach.
–Never cut above shoulder height.
–Use extreme caution when re-
entering a previous cut.
–Do not attempt plunge cuts if you
are not experienced in this cutting
technique.
–Be alert for shifting of the log or
other forces that may cause the cut
to close and pinch the chain.
–Always cut with a correctly
sharpened, properly tensioned
chain – the depth gauge setting
must not be too large.
–Use a low kickback chain and a
narrow radius guide bar.
Pull-in (A)
Pushback (B)
Pushback occurs when the chain on the
top of the bar is suddenly pinched,
caught or encounters a foreign object in
the wood. The reaction of the chain
drives the saw straight back toward the
operator – to avoid this risk:
–Be alert to situations that may cause
the top of the guide bar to be
pinched
–Do not twist the guide bar in the cut.
To reduce the risk of kickback
–Work cautiously and avoid
situations which could cause
kickback.
–Hold the saw firmly with both hands
and maintain a secure grip.
–Always cut at full throttle.
–Be aware of the location of the guide
bar nose at all times.
MS 192 T, MS 192 TC
Pull-in occurs when the chain on the
bottom of the bar is suddenly pinched,
caught or encounters a foreign object in
the wood. The reaction of the chain pulls
the saw forward – to reduce this risk,
always engage the spiked bumper
securely in the tree or limb.
9
English
001BA082 KN
001BA064 LÄ
Working Techniques
Cutting
Do not operate your saw with the
starting throttle lock engaged. Engine
speed cannot be controlled with the
throttle trigger in this position.
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Ensure you do not endanger
others – stay alert at all times.
Use the shortest possible guide bar: The
chain, guide bar and chain sprocket
must match each other and your saw.
Position the saw so that your body is
clear of the cutting attachment.
If conditions allow, work from a lift
bucket.
Never work on a ladder or on any other
insecure support, do not work above
shoulder height.
Cordon off the work area in order to
reduce the risk of injuries and damage to
property from falling branches (e.g.
motor vehicles).
When working with a lifeline there is a
risk of cutting through the rope – to
reduce the risk of fall injuries, always
use double lifelines.
Take special care when cutting through
a limb. Hold the machine firmly to control
and counteract the feed force. Note
when reaching the end of a cut that the
saw is no longer supported in the kerf.
You have to take the full weight of the
saw – increased risk of accidents.
Make sure your saw does not touch any
foreign materials: Stones , na ils, et c. m ay
be flung off and damage the saw chain.
The saw may kick back unexpectedly –
risk of accidents.
If the rotating chain makes contact with
a rock or other solid object there is a risk
of sparking which may cause easily
combustible material to catch fire under
certain circumstances. Dry plants and
scrub are also easily combustible,
especially in hot and dry weather
conditions. If there is a risk of fire, do not
use your chainsaw near combustible
materials, dry plants or scrub. Always
contact your local forest authority for
information on a possible fire risk.
Warning! To avoid risk of
electrocution, take extra
precautions when cutting
near power lines. Have
the power switched off
before starting cutting
work in the immediate
vicinity of power lines.
Do not underbuck freely hanging limbs
because the chain may get pinched and
cause kickback and loss of control.
To reduce the risk of injury, take special
care when cutting shattered wood
because of the risk of injury from slivers
being caught and thrown in your
direction.
After finishing a cut, activate the chain
brake to lock the chain or shut off the
engine before moving the saw to
another position in the tree.
Cutting techniques:
Always start the cut with the engine at
full throttle.
10
MS 192 T, MS 192 TC
English
001BA248 KN
1
2
3
a
001BA244 KN
Always pull the saw out of the cut with
the chain running.
–Cut straight through thin limbs
–In case of thick limbs, first perform
relieving cut from below (approx. 1/5
of diameter), then buck from above
–Support and secure heavy
branches with ropes.
If the saw gets pinched in the cut:
–Shut off the engine and secure the
saw to the tree – in direction of
trunk.
–Carefully free the saw from the cut,
using another saw if necessary.
Limbs under tension:
NAlways start relieving cut (1) at the
compression side (A).
NMake relieving cut (1) and then
perform bucking cut (2) at the
tension side (B) – the saw will
otherwise pinch or kick back.
If not otherwise possible, make the
bucking cut from the bottom upwards
(underbuck) – be wary of pushback.
Cutting Attachment
A cutting attachment consists of the saw
chain, guide bar and chain sprocket.
The cutting attachment that comes
standard is designed to exactly match
the chain saw.
–The pitch (t) of the saw chain (1),
chain sprocket and the nose
sprocket of the Rollomatic guide bar
must match.
–The drive link gauge (2) of the saw
chain (1) must match the groove
width of the guide bar (3).
If non-matching components are used,
the cutting attachment may be damaged
beyond repair after a short period of
operation.
Chain Scabbard
Your saw comes standard with a chain
scabbard that matches the cutting
attachment.
If guide bars of different lengths are
mounted to the saw, always use a chain
scabbard of the correct length which
covers the complete guide bar.
The length of the matching guide bars is
marked on the side of the chain
scabbard.
MS 192 T, MS 192 TC
11
English
4
142BA057 KN
5
6
142BA058 KN
142BA059 KN
7
8
142BA060 KN
10
9
11
142BA061 KN
7
142BA062 KN
Mounting the Bar and Chain
Releasing the chain brake
NPull the hand guard (4) toward the
control handle until there is an
audibleclick – the chain is
disengaged.
Removing the chain sprocket cover
Mounting the guide bar
NTurn the screw (7)
counterclockwise until the tensioner
slide (8) butts against left end of
housing slot.
NFit the guide bar over the stud (9)
and engage the peg of the tensioner
slide in the locating hole (10).
NFit chain around the sprocket (11)
and over the guide bar – cutting
edges on top of bar must point to
bar nose.
NTurn the tensioning screw (7)
clockwise until there is very little
chain sag on the underside of the
bar – and the drive link tangs are
engaged in the bar groove.
NUnscrew the nut (5) and remove the
cover (6).
12
Fitting the chain
WARNING
Wear work gloves to protect your hands
from the sharp cutters.
MS 192 T, MS 192 TC
English
1
142BA063 KN
142BA064 KN
NRefit the sprocket cover –
the pivot pin on the hand guard must
engage the sleeve – and then screw
the nut onto the stud fingertight.
NGo to chapter on "Tensioning the
Saw Chain"
Tensioning the Saw Chain
(side chain tensioner)
Retensioning during cutting work:
NSwitch off the engine.
NLoosen the nut.
NHold the bar nose up.
NUse a screwdriver to turn the
tensioning screw (1) clockwise until
the chain fits snugly against the
underside of the bar.
NWhile still holding the bar nose up,
tighten down the nut 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".
Checking Chain Tension
NShut off the engine.
NWear work gloves to protect your
hands.
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.
NCheck chain tension frequently –
see chapter on "Operating
Instructions".
MS 192 T, MS 192 TC
13
English
Fuel
Your engine requires a mixture of
gasoline and engine oil.
WARNING
For health reasons, avoid direct skin
contact with gasoline and avoid inhaling
gasoline vapor.
STIHL MotoMix
STIHL recommends the use of STIHL
MotoMix. This ready-to-use fuel mix
contains no benzol or lead, has a high
octane rating and ensures that you
always use the right mix ratio.
STIHL MotoMix uses STIHL HP Ultra
two-stroke engine oil for an extra long
engine life.
MotoMix is not available in all markets.
Mixing Fuel
NOTICE
Unsuitable fuels or lubricants or mix
ratios other than those specified may
result in serious damage to the engine.
Poor quality gasoline or engine oil may
damage the engine, sealing rings, hoses
and the fuel tank.
Gasoline
Use only high-quality brand-name
gasoline with a minimum octane rating
of 90 – leaded or unleaded.
If your machine is equipped with a
catalytic converter, you must use
unleaded gasoline.
NOTICE
A few tankfuls of leaded gasoline will
greatly reduce the efficiency of the
catalytic converter.
Gasoline with an ethanol content of
more than 10% can cause running
problems in engines with a manually
adjustable carburetor and should not be
used in such engines.
Engines equipped with M-Tronic deliver
full power when run on gasoline with an
ethanol content of up to 25% (E25).
Engine oil
Use only high-quality two-stroke engine
oil – preferably STIHL HP, HP Super or
HP Ultra, which are specially formulated
for use in STIHL engines. HP Ultra
guarantees high performance and a
long engine life.
These engine oils are not available in all
markets.
Use only STIHL 50:1 two-stroke engine
oil for the fuel mix in models with a
catalytic converter.
Mix Ratio
STIHL 50:1 two-stroke engine oil: 50
parts gasoline to 1 part oil
fuel. Pour oil into canister first, then
add gasoline and mix thoroughly.
Storing Fuel
Store fuel only in approved safety-type
fuel canisters in a dry, cool and safe
location protected from light and the sun.
Fuel mix ages – only mix sufficient fuel
for a few weeks work. Do not store fuel
mix for longer than 30 days. Exposure to
light, the sun, low or high temperatures
can quickly make the fuel mix unusable.
STIHL MotoMix may be stored for up to
2 years without any problems.
NThoroughly shake the mixture in the
canister before fueling your
machine.
WARNING
Pressure may build up in the canister –
open it carefully.
NClean the fuel tank and canister
from time to time.
14
MS 192 T, MS 192 TC
English
001BA240 KN
001BA218 KN
001BA219 KN
Dispose of remaining fuel and cleaning
fluid properly in accordance with local
regulations and environmental
requirements.
Fueling
Preparations
Left:Tank cap without symbols
Right:Tank cap with markings and
symbols on cap and tank
Tank cap without symbols
Opening
NBefore fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
NPosition the machine so that the
filler cap is facing up.
Tank cap markings
MS 192 T, MS 192 TC
Tank caps and fuel tanks may be
marked in different ways
Depending on the version, your machine
may be equipped with a tank cap and
fuel tank with or without symbols.
NSwing the grip to the upright
position.
NRotate the tank cap about a quarter
turn counterclockwise.
15
English
001BA224 KN
001BA220 KN
001BA221 KN
001BA222 KN
001BA223 KN
001BA225 KN
001BA227 KN
NRemove the cap.
Filling up with fuel
Take care not to spill fuel while fueling
and do not overfill the tank.
STIHL recommends you use the STIHL
filler nozzle for fuel (special accessory).
NFill up with fuel.
Closing
Grip must be vertical:
NFit the cap – positioning marks on
tank cap and filler neck must be in
alignment.
NPress the cap down as far as stop.
NWhile holding the cap depressed,
turn it clockwise until it engages in
position.
NFold the grip flush with the top of the
cap.
Checking security of cap
–The lug on the grip must fully
engage the recess (arrow).
NGrip the cap – it is properly locked if
it cannot be turned or removed.
If the cap can be turned or removed
Bottom of cap is twisted in relation to
top:
Left:Bottom of cap twisted
Right:Bottom of cap correctly
positioned
16
MS 192 T, MS 192 TC
Closing
001BA226 KN
001BA236 KN
001BA232 KN
001BA234 KN
001BA237 KN
001BA234 KN
001BA233 KN
001BA231 KN
English
NPlace the cap on the opening and
rotate it counterclockwise until it
engages the filler neck.
NContinue rotating the cap
counterclockwise (about a quarter
turn) – this causes the bottom of the
cap to be turned to the correct
position.
NTurn and lock the cap clockwise –
see sections on "Closing" and
"Checking security of cap".
Tank cap with markings and symbols
Opening
NRaise the grip until it is upright.
NTurn the cap counterclockwise
(about a quarter turn).
Marks on tank cap and fuel tank must
line up.
NRemove the cap.
Filling up with fuel
Take care not to spill fuel while fueling
and do not overfill the tank.
STIHL recommends you use the STIHL
filler nozzle for fuel (special accessory).
NFill up with fuel.
Grip must be vertical:
NFit the cap – marks on tank cap and
fuel tank must line up.
NPress the cap down as far as stop.
NWhile holding the cap depressed,
turn it clockwise until it engages in
position.
The marks on the tank cap and fuel tank
are then in alignment.
MS 192 T, MS 192 TC
17
English
001BA235 KN
001BA241 KN
1
001BA238 KN
001BA239 KN
NFold the grip down so that it is flush
with the top of the cap.
Tank cap is locked.
If the tank cap cannot be locked in the
fuel tank opening
Bottom of cap is twisted in relation to
top.
NRemove the cap from the fuel tank
and check it from above.
Left:Bottom of cap is twisted –
inner mark (1) in line with
outer mark.
Right:Bottom of cap in correct posi
tion – inner mark is under the
grip. It is not in line with the
outer mark.
NPlace the cap on the opening and
rotate it counterclockwise until it
engages the filler neck.
NContinue rotating the cap
counterclockwise (about a quarter
turn) – this causes the bottom of the
cap to be turned to the correct
position.
NTurn the cap clockwise and lock it in
position – see section on "Closing".
Chain Lubricant
For automatic and reliable lubrication of
the chain and guide bar – use only an
environmentally compatible quality
chain and bar lubricant. Rapidly
biodegradable STIHL BioPlus is
recommended.
NOTICE
Biological chain oil must be resistant to
-
aging (e.g. STIHL BioPlus), since it will
otherwise quickly turn to resin. This
results in hard deposits that are difficult
to remove, especially in the area of the
chain drive and chain. It may even cause
the oil pump to seize.
The service life of the chain and guide
bar depends on the quality of the
lubricant. It is therefore essential to use
only a specially formulated chain
lubricant.
WARNING
Do not use waste oil. Renewed contact
with waste oil can cause skin cancer.
Moreover, waste oil is environmentally
harmful.
NOTICE
Waste oil does not have the necessary
lubricating properties and is unsuitable
for chain lubrication.
18
MS 192 T, MS 192 TC
English
142BA069 KN
Filling Chain Oil TankChecking Chain Lubrication
NOTICE
There must still be a small amount of oil
in the oil tank when the fuel tank is
empty.
If the oil level in the tank does not go
down, the reason may be a fault in the oil
Preparations
supply system: Check chain lubrication,
clean the oilways, contact your dealer
for assistance if necessary STIHL
recommends that you have servicing
and repair work carried out exclusively
by an authorized STIHL servicing
dealer.
NThoroughly clean the oil filler cap
and the area around it to ensure that
no dirt falls into the tank.
NPosition the machine so that the
filler cap is facing up.
NOpen the filler cap.
Filling chain oil tank
The saw chain must always throw off a
small amount of oil.
NOTICE
Never operate your saw without chain
lubrication. If the chain runs dry, the
NRefill the chain oil tank every time
you refuel.
Take care not to spill chain oil while
refilling and do not overfill the tank.
STIHL recommends you use the STIHL
filler nozzle for chain oil (special
accessory).
NClose the filler cap.
whole cutting attachment will be
irretrievably damaged within a very short
time. Always check chain lubrication and
the oil level in the tank before starting
work.
Every new chain has to be broken in for
about 2 to 3 minutes.
After breaking in the chain, check chain
tension and adjust if necessary – see
"Checking Chain Tension".
MS 192 T, MS 192 TC
19
English
Chain Brake
Locking the chain
–in an emergency
–when starting
–at idling speed
The chain brake is activated by pushing
the hand guard toward the bar nose with
your left hand – or by inertia in certain
kickback situations: The chain is
stopped and locked.
Releasing the chain brake
NOTICE
Always disengage chain brake before
accelerating the engine (except when
checking its operation) and before
starting cutting work.
High revs with the chain brake engaged
(chain locked) will quickly damage the
powerhead and chain drive (clutch,
chain brake).
The chain brake is also activated by the
inertia of the front hand guard if the
kickback force of the saw is high
enough: The hand guard is accelerated
toward the bar nose.
The chain brake will operate only if the
hand guard has not been modified in any
way.
Check operation of the chain brake
Before starting work: Run engine at idle
speed, engage the chain brake (push
hand guard toward bar nose) and open
the throttle wide for no more than
3 seconds – the chain must not rotate.
The hand guard must be free from dirt
and move freely.
Full-time professional
usage:
Semi-professional
usage:
every 3
months
every 6
months
NPull the hand guard back toward the
front handle,
20
Chain brake maintenance
The chain brake is subject to normal
wear. It is necessary to have it serviced
and maintained regularly by trained
personnel. STIHL recommends that you
have servicing and repair work carried
out exclusively by an authorized STIHL
servicing dealer. Maintain the following
servicing intervals:
MS 192 T, MS 192 TC
English
151BA006 KN
STOP
Information Before You Start
The three positions of the Master
Control lever:
Stop 0 – engine off – the ignition is
switched off.
Normal run position F – engine runs or
can fire.
To move the Master Control lever from F
to n, press down the throttle trigger
lockout and squeeze the throttle trigger
at the same time.
Starting throttle position n – this
position is used to start a warm engine.
The Master Control lever moves to the
normal run position as soon as the
throttle trigger is squeezed.
Starting / Stopping the
Engine
Starting the Engine
NPress the fuel pump bulb at least
five times – even if the bulb is filled
with fuel.
NPush the hand guard (1) forward –
the chain is locked.
NPress down the throttle interlock (2)
and squeeze the throttle trigger (3)
at the same time – hold both levers
in that position.
NMove the Master Control lever (4) to
n and hold it there.
NNow release the throttle trigger,
Master Control and trigger interlock
in that order. This is the starting
throttle position.
If the engine is cold
NMove the choke lever (5) to l.
If the engine is warm
NSet the choke lever (5) to j . Also
use this position if the engine has
been running but is still cold.
MS 192 T, MS 192 TC
21
English
time. Do not pull out the starter rope
all the way – it might otherwise
break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
When the engine begins to fire
NPlace your saw on the ground.
Make sure you have a firm footing –
check that the chain is not touching
any object or the ground.
WARNING
Bystanders must be well clear of the
general work area of the saw.
NHold the saw firmly on the ground
with your right hand on the control
handle and your right knee resting
on the carburetor box cover.
22
Models with stardard starter
NPull the starter grip slowly with your
left hand until you feel it engage –
and then give it a brisk strong pull
and push down the front handle at
the same time. Do not pull out the
starter rope to full length – it might
otherwise break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
Models with ErgoStart
The ErgoStart stores the energy
required to start the saw. For this reason
there may be a delay of a few seconds
between cranking the engine and it
actually starting.
NPull the starter grip slowly and
steadily with your left hand and push
down the front handle at the same
If the engine is cold:
NSet the choke lever (5) to j and
continue cranking until the engine
runs.
If the engine is warm
NContinue cranking until the engine
runs.
As soon as the engine runs
NBlip the throttle trigger (3). The
Master Control lever (4) moves to
the run position F and the engine
settles down to idling speed.
MS 192 T, MS 192 TC
NOTICE
As the chain brake is still engaged, the
engine must be returned to idling speed
immediately or the engine housing and
chain brake might otherwise be
damaged.
NPull the hand guard back toward the
handlebar. The chain brake is now
disengaged – your saw is ready for
operation.
Stopping the Engine
NMove the Master Control lever to 0
or STOP.
If fuel tank has been run completely dry
and then refueled
NAfter refueling, press the fuel pump
bulb at least five times – even if the
bulb is filled with fuel.
English
NOpen the twist lock (1) in the
direction of the arrow.
NRemove the carburetor box
cover (2).
NOTICE
Always disengage chain brake before
accelerating the engine. High revs with
the chain brake engaged (chain locked)
will quickly damage the powerhead and
chain drive (clutch, chain brake).
NAlways check operation of chain
lubrication before starting work.
At very low outside temperatures
NOpen throttle slightly – warm up the
engine for short period.
MS 192 T, MS 192 TC
If the engine does not start
Engine is flooded
If you did not move the choke lever to
warm start j quickly enough after the
engine began to fire, the combustion
chamber is flooded.
NMove the Master Control lever to 0
or STOP.
NInsert a suitable tool in the spark
plug boot (3).
NPry off the spark plug boot.
NUnscrew and dry off the spark plug.
NOpen the throttle wide.
NSet the choke lever to j (warm
start).
23
English
NCrank the engine several times with
the starter to clear the combustion
chamber.
NInstall the spark plug and connect
the spark plug boot, press it down
firmly – reassemble the other parts.
NSet the Master Control lever to n –
the starting throttle position.
NSet the choke lever to j (warm
start) – even if the engine is cold.
NNow start the engine.
Operating Instructions
During the break-in period
A factory new machine should not be run
at high revs (full throttle off load) for the
first three tank fillings. This avoids
unnecessarily high loads during the
break-in period. As all moving parts
have to bed in during the break-in
period, the frictional resistances in the
shortblock are greater during this period.
The engine develops its maximum
power after about 5 to 15 tank fillings.
During work
NOTICE
Do not make the mixture leaner to
achieve an apparent increase in power –
this could damage the engine – see
"Adjusting the Carburetor".
NOTICE
Open the throttle only when the chain
brake is off. Running the engine at high
revs with the chain brake engaged
(chain locked) will quickly damage the
shortblock and chain drive (clutch, chain
brake).
Check chain tension frequently
A new saw chain must be retensioned
more frequently than one that has been
in use already for an extended period.
Chain cold
Tension is correct when the chain fits
snugly against the underside of the bar
but can still be pulled along the bar by
hand. Retension if necessary – see
"Tensioning the Saw Chain".
Chain at operating temperature
The chain stretches and begins to sag.
The drive links must not come out of the
bar groove on the underside of the bar –
the chain may otherwise jump off the
bar. Retension the chain – see
"Tensioning the Saw Chain".
NOTICE
The chain contracts as it cools down. If it
is not slackened off, it can damage the
crankshaft and bearings.
After a long period of full-throttle
operation
After a long period of full-throttle
operation, allow engine to run for a while
at idle speed so that the heat in the
engine can be dissipated by flow of
cooling air. This protects enginemounted components (ignition,
carburetor) from thermal overload.
After finishing work
NSlacken off the chain if you have
retensioned it at operating
temperature during work.
24
MS 192 T, MS 192 TC
English
2
3
1
143BA026 KN
NOTICE
Always slacken off the chain again after
finishing work. The chain contracts as it
cools down. If it is not slackened off, it
can damage the crankshaft and
bearings.
Short-term storage
Wait for engine to cool down. Keep the
machine with a full tank of fuel in a dry
place, well away from sources of
ignition, until you need it again.
Long-term storage
See "Storing the machine"
Taking Care of the Guide Bar
NFlip the bar – after each sharpening
and each time the chain is changed
– to avoid uneven wear, especially
at the sprocket nose and on the
bottom
NPeriodically clean the oil inlet
hole (1), oil outlet channel (2) and
bar groove (3)
NMeasure groove depth – using the
measuring tool on the file gauge
(special accessory) – in the area
with the greatest wear
Chain type Chain pitch Minimum
groove depth
Picco1/4“ P4.0 mm
Rapid1/4“4.0 mm
Picco3/8“ P5.0 mm
Rapid3/8“; 0.325“ 6.0 mm
Rapid0.404“7.0 mm
If the groove is not at least this deep:
NReplace guide bar
Otherwise the drive links will grind
against the base of the groove – the
bottoms of the cutters and the tie straps
will not lie against the bar.
MS 192 T, MS 192 TC
25
English
Air Filter SystemCleaning the Air Filter
The air filter system can be adapted to
suit different operating conditions by
installing a choice of filters. Changing
the filter is quick and simple.
The saw comes standard with either a
fabric filter or a fleece filter.
Fabric filter
For normal operating conditions and
winter operation.
Fleece filter
For dry and very dusty work areas.
If there is a noticeable loss of engine
power
NPlace the filter (3) in position.
NFit the carburetor box cover.
NOpen the twist lock (1) in the
direction of the arrow.
NRemove the carburetor box
cover (2).
NClean away loose dirt from around
the filter.
NRemove the filter.
NKnock the filter out on the palm of
your hand or blow it clear with
compressed air from the inside
outwards.
NAlways replace damaged filters.
If filter is caked with dirt:
NWash the sfilte r with S TIHL unve rsal
cleaner or in a clean, nonflammable solution (e.g. warm
soapy water) and then dry.
26
NOTICE
Do not clean a fleece filter (option) with
a brush.
MS 192 T, MS 192 TC
English
151BA038 KN
Adjusting the Carburetor
General Information
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
Preparations
NShut off the engine.
NCheck the air filter and clean or
replace if necessary.
NCheck the spark arresting screen
(not in all models, country-specific)
in the muffler and clean or replace if
necessary.
Different Standard Settings
NDetermine the required standard
setting as follows: Turn the low
speed screw (L) carefully clockwise
as far as stop, then turn it
counterclockwise.
Is range of adjustment more than 1 turn?
NContinue with "Standard setting A"
Is range of adjustment less than 1 turn?
NContinue with "Standard setting B"
Standard setting A
Standard setting B
151BA037 KN151BA038 KN
NTurn high speed screw (H)
counterclockwise as far as stop (no
more than 3/4 turn).
NTurn the low speed screw (L)
carefully clockwise as far as stop,
then turn it back 1/4 turn.
Adjusting Idle Speed
NCarry out the standard setting.
NStart and warm up the engine.
Different carburetors are installed at the
factory. A different standard setting is
necessary for each of these carburetors.
Standard setting A
–High speed screw (H) = 3/4
–Low speed screw (L) = 1
Standard setting B
–High speed screw (H) = 3/4
–Low speed screw (L) = 1/4
MS 192 T, MS 192 TC
NTurn high speed screw (H)
counterclockwise as far as stop (no
more than 3/4 turn).
NTurn the low speed screw (L)
carefully clockwise until it is against
its seat, then turn it back 1 full turn
151BA039 KN
Engine stops while idling
NTurn the idle speed screw (LA)
clockwise until the chain begins to
run – then back it off 2 turns.
27
English
Saw chain runs while engine is idling
NTurn the idle speed screw (LA)
counterclockwise until the chain
stops moving – then turn it another
2 turns in the same direction.
WARNING
If the chain continues moving when the
engine is idling, have your saw checked
and repaired by your servicing dealer.
Erratic idling behavior, poor acceleration
(even though standard setting of low
speed screw is correct)
Idle setting is too lean
NTurn the low speed screw (L)
counterclockwise, no further than
stop, until the engine runs and
accelerates smoothly.
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Fine Tuning for Operation at High
Altitude
A slight correction of the setting may be
necessary if engine does not run
satisfactorily:
NCarry out the standard setting.
NWarm up the engine.
NTurn high speed screw (H) slightly
clockwise (leaner) – no further than
stop.
NOTICE
After returning from high altitude, reset
the carburetor to the standard setting.
If the setting is too lean there is a risk of
engine damage due to insufficient
lubrication and overheating.
Spark Arresting Screen in
Muffler
In some countries the muffler is
equipped with a spark arresting screen.
NIf the engine is down on power,
check the spark arresting screen in
the muffler.
NWait for the muffler to cool down.
NRemove the sprocket cover.
NTake out the screw (1).
NRemove the baffle plate (2).
NRemove the spark arresting
screen (3).
NClean the spark arresting screen. If
the screen is damaged or heavily
carbonized, fit a new one.
NRefit the spark arresting screen.
NFit the baffle plate.
28
MS 192 T, MS 192 TC
English
000BA002 KN
1
000BA045 KN
3
000BA050 KN
2
Checking the Spark Plug
If the engine is down on power, difficult
to start or runs poorly at idle speed, first
check the spark plug.
NRemove the spark plug – see
"Starting / Stopping the Engine".
NClean dirty spark plug.
NCheck electrode gap (A) and
readjust if necessary – see
"Specifications".
NRectify the problems which have
caused fouling of the spark plug.
Possible causes are:
–Too much oil in fuel mix.
–Dirty air filter.
–Unfavorable running conditions.
NInstall a new spark plug after about
100 operating hours – or sooner if
the electrodes are badly eroded.
Install only suppressed spark plugs
of the type approved by STIHL – see
"Specifications".
To reduce the risk of arcing and fire
If the spark plug comes with a
detachable adapter nut:
NScrew the adapter nut (1) onto the
thread and tighten it down firmly.
On all spark plugs
NAlways press the boot (2) firmly on
to the spark plug (3).
MS 192 T, MS 192 TC
29
English
001BA120 KN
Rewind StarterStoring the MachineChecking and Replacing the
Chain Sprocket
To help prolong the wear life of the
starter rope, observe the following
points:
NPull the starter rope only in the
direction specified.
NDo not pull the rope over the edge of
the guide bushing.
NDo not pull out the rope more than
specified.
NDo not allow the starter grip to snap
back, guide it back into the housing
slowly – see chapter on "Starting /
Stopping the Engine."
Have a damaged starter rope replaced
by your dealer before it breaks
completely. STIHL recommends that
you have servicing and repair work
carried out exclusively by an authorized
STIHL servicing dealer.
For periods of 3 months or longer
NDrain and clean the fuel tank in a
well ventilated area.
NDispose of fuel properly in
accordance with local
environmental requirements.
NRun the engine until the carburetor
is dry – this helps prevent the
carburetor diaphragms sticking
together.
NRemove the saw chain and guide
bar, clean them and spray with
corrosion inhibiting oil.
NThoroughly clean the machine – pay
special attention to the cylinder fins
and air filter.
NIf you use a biological chain and bar
lubricant, e.g. STIHL BioPlus,
completely fill the chain oil tank.
NStore the machine in a dry, high or
locked location, out of the reach of
children and other unauthorized
persons.
NRemove the chain sprocket cover,
chain and guide bar.
NDisengage the chain brake: Pull the
hand guard toward the front handle.
Replace the chain sprocket
–after using two saw chains or
sooner
–if the wear marks (arrows) on the
sprocket are deeper than approx.
0.5 mm since this would reduce the
life of the chain. You can use a
gauge (special accessory) to check
the depth of the wear marks.
It is best to use two saw chains in
rotation with one sprocket.
STIHL recommends the use of original
STIHL sprockets to ensure correct
operation of the chain brake.
30
MS 192 T, MS 192 TC
English
217BA051 KN
3
Removing
NRemove the spark plug boot (1).
NUnscrew the spark plug (2).
NPush the locking strip (3) – narrow
end first – into the cylinder and then
turn it 90°.
NRotate the clutch clockwise as far as
stop
NPull the chain sprocket (4) and
needle cage (5) off the crankshaft.
NClean the crankshaft stub and
needle cage, and lubricate with
STlHL grease (special accessory).
Assembling
NPush the needle cage and chain
sprocket onto the crankshaft.
NScrew the clutch onto the
crankshaft (counterclockwise).
NTighten down the clutch firmly.
NRemove the locking strip from the
cylinder. Fit the spark plug and
tighten it down firmly.
NRefit boot on the spark plug.
Maintaining and Sharpening
the Saw Chain
Sawing effortlessly with a properly
sharpened saw chain
A properly sharpened saw chain cuts
through wood effortlessly even with very
little pushing.
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
Carbide-tipped (Duro) saw chains are
especially wear-resistant. For an optimal
sharpening result, STIHL recommends
STIHL servicing dealers.
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!
NLoosen the clutch hexagon
clockwise (left-hand thread).
NUnscrew the clutch.
MS 192 T, MS 192 TC
31
English
689BA027 KN
a
A
B
689BA021 KN
689BA025 KN
001BA203 KN
Chain pitch
The chain pitch marking (a) is embossed
in the area of the depth gauge of each
cutter.
Marking (a)Chain pitch
Inchesmm
71/4 P6.35
1 or 1/41/46.35
6, P or PM3/8 P9.32
2 or 3250.3258.25
3 or 3/83/89.32
4 or 4040.40410.26
The diameter of file to be used depends
on the chain pitch – see table
"Sharpening tools".
The angles of the cutter must be
maintained during resharpening.
Sharpening and side plate angles
ASharpening angle
STIHL saw chains are sharpened with a
30° sharpening angle. Ripping chains,
which are sharpened with a 10°
sharpening angle, are exceptions.
Ripping chains have an X in the
designation.
BSide plate angle
The correct side plate angle results
automatically when the specified file
holder and file diameter are used.
Tooth shapesAngle (°)
AB
Micro = semi-chisel tooth,
3075
e. g., 63 PM3, 26 RM3,
36 RM
Super = full chisel tooth,
3060
e. g., 63 PS3, 26 RS,
36 RS3
Ripping chain, e. g.,
1075
63 PMX, 36 RMX
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.
File holder
NUse a file holder
Always use a file holder (special
accessory, see table "Sharpening tools")
when sharpening saw chains by hand.
File holders have markings for the
sharpening angle.
Use only special saw chain files! Other
files are unsuitable in terms of shape
and type of cutting.
To check the angles
STIHL filing gauge (special accessory,
see table "Sharpening tools") – a
universal tool for checking sharpening
and side plate angles, depth gauge
setting, and tooth length, as well as
cleaning grooves and oil inlet holes.
32
MS 192 T, MS 192 TC
English
689BA018 KN
90°
689BA043 KN
689BA023 KN
a
2
689BA061 KN
1
Proper sharpening
NSelect sharpening tools in
accordance with chain pitch
NClamp guide bar if necessary
NBlock saw chain – push the hand
guard forward
NTo advance the saw chain, pull the
hand guard toward the handlebar:
The chain brake is disengaged.
With the Quickstop Super chain
brake system, additionally press the
throttle trigger lockout
NSharpen frequently, removing little
material – two or three strokes of the
file are usually sufficient for simple
resharpening
markings on the file holder – rest the
file holder on the tooth head and the
depth gauge
NFile only from the inside outward
NThe file only sharpens on the
forward stroke – lift the file on the
backstroke
NDo not file tie straps and drive links
NRotate the file a little periodically in
order to avoid uneven wear
NTo remove file burr, use a piece of
hardwood
NCheck angle with file gauge
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 filed down equal
to the length of the shortest cutter –
ideally, one should have this done
by a servicing dealer using an
electric sharpener
aRequired distance between depth
gauge and cutting edge
When cutting softwood outside of the
frost season, the distance can be
increased by up to 0.2 mm (0.008").
The depth gauge setting is lowered
when the cutter is sharpened.
NCheck the depth gauge setting after
each sharpening
NGuide the file: horizontally (at a r igh t
angle to the side surface of the
guide bar) in accordance with the
specified angle – according to the
MS 192 T, MS 192 TC
Depth gauge setting
The depth gauge determines the depth
to which the cutter penetrates the wood
and thus the chip thickness.
NLay the appropriate file gauge (1)
for the chain pitch on the saw chain
and press it against the cutter to be
checked – if the depth gauge
protrudes past the file gauge, the
depth gauge must be reworked
33
English
689BA051 KN
689BA044 KN
689BA052 KN
Saw chains with humped drive link (2) –
upper part of the humped drive link (2)
(with service mark) is lowered at the
same time as the depth gauge of the
cutter.
WARNING
The rest of the humped drive link must
not be filed; otherwise, this could
increase the tendency of the chain saw
to kick back.
NAfterwards, dress the leading edge
of the depth gauge parallel to the
service mark (see arrow) – when
doing this, be careful not to further
lower the highest point of the depth
gauge
NLay the file gauge on the saw chain
– the highest point of the depth
gauge must be flush with the file
gauge
NAfter sharpening, clean the saw
chain thoroughly, removing any
filings or grinding dust – lubricate
WARNING
Depth gauges that are too low increase
the kickback tendency of the chain saw.
the saw chain thoroughly
NIn the event of extended periods of
disuse, store saw chains in cleaned
and oiled condition
consisting of file holder with round file, taper square file and file gauge
1)
34
MS 192 T, MS 192 TC
Maintenance and Care
English
The following maintenance intervals apply to normal usage and operating conditions. If your daily
working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, trop
ical wood, etc.), shorten the specified intervals accordingly. If you only use your power tool
occasionally, extend the intervals accordingly.
Complete machine
Throttle trigger, trigger lockout, choke lever, stop
switch, Master Control lever (depending on
version)
Chain brake
Manual fuel pump (if fitted)
Pickup body/filter in fuel tank
Fuel tankCleanX
Chain oil tankCleanX
Chain lubricationCheckX
Chain
Guide bar
Chain sprocketCheckX
Air filter
Visual inspection (condition, leaks)XX
CleanX
Check operationXX
Check operationXX
Have checked by servicing dealer
CheckX
Have repaired by servicing dealer
CheckX
Clean, replace filter elementXX
ReplaceXXX
Inspect, also check sharpnessXX
Check chain tensionXX
SharpenX
Check (wear, damage)X
Clean and turn overX
DeburrX
ReplaceXX
CleanXX
ReplaceX
1)
1)
-
before starting work
after finishing work or daily
after each refueling stop
weekly
monthly
every 12 months
if problem
if damaged
as required
X
X
MS 192 T, MS 192 TC
35
English
The following maintenance intervals apply to normal usage and operating conditions. If your daily
working time is longer or operating conditions are difficult (very dusty work area, resin-rich wood, trop
ical wood, etc.), shorten the specified intervals accordingly. If you only use your power tool
occasionally, extend the intervals accordingly.
Antivibration elements
Check XX
Have replaced by servicing dealer
1)
-
before starting work
after finishing work or daily
after each refueling stop
weekly
monthly
every 12 months
if problem
if damaged
as required
X
Air inlet on fan housingCleanXXX
Cylinder finsCleanXXX
Check idle adjustment – chain must not rotateXX
Carburetor
Spark plug
All accessible screws and nuts (not adjusting
screws)
Chain catcher
Exhaust port
Adjust idle speed; if necessary, have saw serv
iced or repaired by dealer
1)
Readjust electrode gapX
Replace after every 100 hours of operation
Retighten
2)
CheckX
ReplaceX
Decoke after first 139 hours of operation, then
every 150 hours of operation
-
X
X
X
Safety labelsReplaceX
1)
STIHL recommends a STIHL servicing dealer
2)
Firmly tighten down the cylinder base screws of professional saws (3.4 kW or more) after 10 to 20 hours of operation.
36
MS 192 T, MS 192 TC
English
Minimize Wear and Avoid
Damage
Observing the instructions in this manual
helps reduce the risk of unnecessary
wear and damage to the power tool.
The power tool must be operated,
maintained and stored with the due care
and attention described in this owner's
manual.
The user is responsible for all damage
caused by non-observance of the safety
precautions, operating and maintenance
instructions in this manual. This includes
in particular:
–Alterations or modifications to the
product not approved by STIHL.
–Using tools or accessories which
are neither approved or suitable for
the product or are of a poor quality.
–Using the product for purposes for
which it was not designed.
–Using the product for sports or
competitive events.
–Consequential damage caused by
continuing to use the product with
defective components.
Maintenance Work
All the operations described in the
"Maintenance Chart" must be performed
on a regular basis. If these maintenance
operations cannot be performed by the
owner, they should be performed by a
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.
If these maintenance operations are not
carried out as specified, the user
assumes responsibility for any damage
that may occur. Among other parts, this
includes:
–Damage to the engine due to
neglect or deficient maintenance
(e.g. air and fuel filters), incorrect
carburetor adjustment or
inadequate cleaning of cooling air
inlets (intake ports, cylinder fins).
–Corrosion and other consequential
damage resulting from improper
storage.
–Damage to the machine resulting
from the use of poor quality
replacement parts.
Parts Subject to Wear and Tear
Some parts of the power tool are subject
to normal wear and tear even during
regular operation in accordance with
instructions and, depending on the type
and duration of use, have to be replaced
in good time. Among other parts, this
includes:
–Saw chain, guide bar
–Drive components (clutch, clutch
drum, chain sprocket)
–Filters (air, oil, fuel)
–Starter mechanism
–Spark plug
–Components of antivibration system
MS 192 T, MS 192 TC
37
English
21
22
7
6
11
5
3
12
1
2
10
9
8
13
14
15
16
4
#
217BA043 KN
18
23
17
19
20
24
25
Main Parts
1Carburetor box cover twist lock
2Carburetor box cover
3Carburetor adjusting screws
4Control handle
5Throttle trigger interlock
6Master Control lever
7Throttle trigger
8Chain brake
9Chain sprocket
10 Chain sprocket cover
11 Spark plug boot
12 Muffler
13 Chain tensioner
14 Chain catcher
15 Guide bar
16 Oilmatic saw chain
17 Bumper spike
18 Fuel filler cap
19 Oil filler cap
20 Hand guard
21 Handlebar (front handle)
22 Starter grip
23 Choke lever
24 Manual fuel pump
25 Ring for rope
#Serial number
38
MS 192 T, MS 192 TC
English
Specifications
Engine
STIHL single cylinder two-stroke engine
MS 192 T, MS 192 TC
Displacement:30.1 cc
Bore:37 mm
Stroke:28 mm
Engine power to
ISO 7293:
Idle speed:
1)
1
to ISO 11681 +/- 50 rpm
Ignition System
Electronic magneto ignition
Spark plug (resistor
type):NGK BPMR 7 A
Electrode gap:0.5 mm
Fuel System
1.3 kW at
9,500 rpm
3,000 rpm
Weight
Weight (dry, without bar and chain):
MS 192 T:3.0 kg
MS 192 TC:3.2 kg
Cutting Attachment
Rollomatic guide bars
Bar lengths (3/8" P pitch): 30, 35, 40 cm
Groove width:1.1 mm
Bar lengths (3/8" P pitch): 30, 35, 40 cm
Groove width:1.3 mm
Carving guide bars
Bar lengths (1/4" pitch): 25, 30 cm
Groove width:1.3 mm
3/8" Picco chains
Picco Micro Mini 3 (61 PMM3)
Type 3610
Pitch:3/8" P
(9.32 mm)
Drive link gauge:1.1 mm
Chain Sprockets
6-tooth for 3/8" P (spur sprocket)
Max. chain velocity to
ISO 1168123.6 m/s
8-tooth for 1/4" (spur sprocket)
Max. chain velocity to
ISO 1168121.4 m/s
As a rule, the mean chain velocity in
operation is about 20% lower than the
maximum chain velocity in accordance
with ISO 11681. Contact your STIHL
servicing dealer for advice on personal
protective equipment.
Noise and Vibration Data
For further details on compliance with
Vibration Directive 2002/44/EC see
www.stihl.com/vib.
Sound pressure level L
to ISO 22868
peq
97 dB(A)
Sound power level L
to ISO 22868
weq
112 dB(A)
All position diaphragm carburetor with
integral fuel pump
Fuel tank capacity:270 cc (0.27 l)
Chain Lubrication
Fully-automatic speed-controlled oil
pump with rotary piston
Oil tank capacity:220 cc (0.22 l)
MS 192 T, MS 192 TC
Picco Micro Mini 3 (63 PMM3)
Type 3636
Pitch:3/8" P
(9.32 mm)
Drive link gauge:1.3 mm
1/4" saw chains
Rapid Micro Spezial (13 RMS)
Type 3661
Pitch:1/4" (6.36 mm)
Drive link gauge:1.3 mm
Vibration measurement a
hv,eq
to
ISO 22867
Handle, left2.9 m/s
Handle, right:3.1 m/s
The K-factor in accordance with
Directive 2006/42/EC is 2.5 dB(A) for
the sound pressure level and sound
power level; the K-factor in accordance
with Directive 2006/42/EC is 2.0 m/s
2
for the vibration measurement.
39
2
2
English
REACH
REACH is an EC regulation and stands
for the Registration, Evaluation,
Authorisation and Restriction of
Chemical substances.
For information on compliance with the
REACH regulation (EC) No. 1907/2006
see www.stihl.com/reach.
Special AccessoriesOrdering Spare Parts
–File holder with round file
–Filing gauge
–Reference gauges
–STIHL lubricating grease
–STIHL filler nozzle for fuel – helps
avoid spills and overfilling during
refueling
–STIHL filler nozzle for chain oil –
helps avoid spills and overfilling
Contact your STIHL dealer for more
information on these and other special
accessories.
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 reordering 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.
Model
Serial number
Guide bar part number
Chain part number
40
MS 192 T, MS 192 TC
English
000BA073 KN
Maintenance and RepairsDisposal
Users of this machine may only carry out
the maintenance and service work
described in this user manual. All other
repairs must be carried out by a
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.
When repairing the machine, only use
replacement parts which have been
approved by STIHL for this power tool or
are technically identical. Only use highquality replacement parts in order to
avoid the risk of accidents and damage
to the machine.
STIHL recommends the use of original
STIHL replacement parts.
Original STIHL parts can be identified by
the STIHL part number, the {
logo and 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 environmentfriendly recycling.
Contact your STIHL servicing dealer for
the latest information on waste disposal.
EC Declaration of Conformity
ANDREAS STIHL AG & Co. KG
Badstr. 115
D-71336 Waiblingen
confirms that the product described
below
Category:Chainsaw
Make:STIHL
Model:MS 192 T
MS 192 TC
MS 192 TC-E
Serial identification:1137
Displacement:30.1 cm
conforms to the specifications of
Directives 2006/42/EC, 2004/108/EC
and 2000/14/EC and has been
developed and manufactured in
compliance with the following
standards:.
EN ISO 11681-2, EN 61000-6-1,
EN 55012
The measured and guaranteed sound
power levels were determined according
to Directive 2000/14/EC, Annex V, using
the ISO 9207 standard.
Measured sound power level
3
MS 192 T, MS 192 TC
112 dB(A)
Guaranteed sound power level
113 dB(A)
The EC type examination was carried
out by
41
English
DPLF
Deutsche Prüf- und Zertifizierungsstelle
für Land- und Forsttechnik (NB 0363)
Max-Eyth-Weg 1
D-64823 Gross-Umstadt
Certification No.
K-EG-2009/3919
Technical documents deposited at:
ANDREAS STIHL AG & Co. KG
Produktzulassung (Product Licensing)
The year of manufacture and serial
number are applied to the product.
Done at Waiblingen, 01.08.2012
ANDREAS STIHL AG & Co. KG
Thomas Elsner
Director Group Product Management
42
MS 192 T, MS 192 TC
English
MS 192 T, MS 192 TC
43
English
44
MS 192 T, MS 192 TC
0458-217-0121-C
englisch
G
www.stihl.com
*04582170121C*
0458-217-0121-C
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