Stihl MSE 141 C User manual

STIHL MSE 141 C
Instruction Manual2 - 25

Contents
1 Introduction................................................. 2
2 Guide to Using this Manual.........................2
3 Overview..................................................... 2
4 Safety Precautions......................................3
5 Preparing the Saw for Operation.............. 10
6 Assembling the Saw................................. 10
7 Engaging and Disengaging the Chain Brake
.................................................................. 12
8 Switching the Saw On/Off......................... 12
9 Checking the Saw..................................... 12
10 Operating the Saw.................................... 14
11 After Finishing Work..................................18
12 Transporting..............................................18
13 Storing.......................................................18
14 Cleaning....................................................19
15 Maintenance............................................. 19
16 Repairing...................................................20
17 Troubleshooting........................................ 20
18 Specifications............................................21
19 Bar and Chain Combinations.................... 22
20 Spare Parts and Accessories....................22
21 Disposal.................................................... 22
22 EC Declaration of Conformity................... 22
23 General Power Tool Safety Warnings.......23
1 Introduction
Dear Customer,
Thank you for choosing STIHL. We develop and
manufacture our quality products to meet our
customers’ requirements. The products are
designed for reliability even under extreme con‐
ditions.
STIHL also stands for premium service quality.
Our dealers guarantee competent advice and
instruction as well as comprehensive service
support.
STIHL expressly commit themselves to a sus‐
tainable and responsible handling of natural
resources. This user manual is intended to help
you use your STIHL product safely and in an
environmentally friendly manner over a long
service life.
We thank you for your confidence in us and hope
you will enjoy working with your STIHL product.
Dr. Nikolas Stihl
IMPORTANT! READ BEFORE USING AND
KEEP IN A SAFE PLACE FOR REFERENCE.
2 Guide to Using this Manual
2.1 Symbols used with warnings in
the text
WARNING
■ This symbol indicates dangers that can cause
serious injuries or death.
► The measures indicated can avoid serious
injuries or death.
NOTICE
■ This symbol indicates dangers that can cause
damage to property.
► The measures indicated can avoid damage
to property.
2.2 Symbols in Text
This symbol refers to a chapter in this
instruction manual.
3 Overview
3.1 Chainsaw
12
15
16
0000-GXX-2128-A0
10
9
5
1
6
3
13
14
8
7
11
2
#
4
17
19
20
18
1 Rear Hand Guard
Protects operator’s right hand from contact
with the chain if it comes off the bar or
breaks.
2 Chain Sprocket Cover
Covers the chain sprocket and secures the
guide bar to the chainsaw.
English
2 0458-729-0121-B
© ANDREAS STIHL AG & Co. KG 2021
0458-729-0121-B. VA0.D21.
Printed on chlorine-free paper Printing inks contain vegetable oils, paper can be recycled.
Translation of Original Instruction Manual 0000007637_013_GB

3 Chain Catcher
Reduces risk of operator contact with the
chain if it comes off the bar or breaks.
4 Nut
Secures chain sprocket cover to chainsaw.
5 Chain sprocket
Toothed wheel that drives the chain.
6 Tensioning Screw
Adjusts chain tension.
7 Reset Button
Resets overload protection
8 Front Hand Guard
Helps protect operator’s left hand from con‐
tact with the saw chain, serves to engage the
chain brake and activates the chain brake by
inertia in certain kickback situations.
9 Spiked Bumper
Toothed stop for holding saw steady against
wood while cutting.
10 Guide bar
Supports and guides the saw chain.
11 Saw Chain
Cuts the wood.
12 Handlebar
For holding, controlling and carrying the
chainsaw.
13 Oil Tank Cap
Closes the oil tank.
14 Lock button
Unlocks the trigger.
15 Trigger
The trigger switches the chainsaw on and off.
16 Control Handle
For operating, holding and controlling the
chainsaw.
17 Inspection Window
For checking chain oil level.
18 Connecting Cable
Connects chainsaw to appliance plug.
19 Appliance Plug
Connects connecting cable to extension
cable.
20 Chain Scabbard
Helps protect user from contact with saw
chain.
# Rating label with serial number
3.2 Symbols
Meanings of symbols that may be on the chain‐
saw:
This symbol shows the direction of
rotation of the chain.
The chain brake is engaged and disen‐
gaged in this direction.
The hand guard disengages the chain
brake in this position.
The hand guard engages the chain brake
in this position.
Length of guide bar that may be used.
L
W
A
Guaranteed sound power level accord‐
ing to directive 2000/14/EC in dB(A) in
order to make sound emissions of
products comparable.
Do not dispose of the product with your
household waste.
4 Safety Precautions
4.1 Warning Signs
Meanings of warning signs on the chain saw:
Observe safety notices and take the
necessary precautions.
Read, understand and save the
instruction manual.
Wear safety glasses, hearing protec‐
tion and a hard hat.
Observe safety notices on kickback
and take the necessary precautions.
If the connecting cord or extension
cord is damaged: Disconnect the plug
from the wall outlet.
Protect the chain saw from rain and
dampness.
4.2 Intended Use
The STIHL MSE 141 chainsaw is suitable for cut‐
ting firewood and for other woodworking projects
close to the house.
Do not use the chainsaw in the rain.
4 Safety Precautions English
0458-729-0121-B 3

The use of this chainsaw for limbing (removing
branches) and felling is limited because its range
of movement is restricted by the connecting and
extension cables.
WARNING
■Using the chainsaw for purposes for which it is
not designed may result in serious or fatal inju‐
ries and damage to property.
►Use the chainsaw with an extension cable.
► Use the chainsaw as described in this
instruction manual.
4.3 The Operator
WARNING
■ Users without adequate training or instruction
cannot recognize or assess the risks involved
in using the chainsaw. The user or other per‐
sons may sustain serious or fatal injuries.
► Read, understand and save the
instruction manual.
► If you pass the chainsaw on to another per‐
son: Always give them the instruction man‐
ual.
►Make sure the user meets the following
requirements:
–The user must be rested.
–The user must be in good physical con‐
dition and mental health to operate and
work with the chainsaw. If the user’s
physical, sensory or mental ability is
restricted, he or she may work only
under the supervision of or as instructed
by a responsible person.
–The user is able to recognize and
assess the risks involved in using the
chainsaw.
–The user must be of legal age or is
being trained in a trade under supervi‐
sion in accordance with national rules
and regulations.
–The user has received instruction from a
STIHL servicing dealer or other experi‐
enced user before working with the
chainsaw for the first time.
–The user must not be under the influ‐
ence of alcohol, medication or drugs.
► If the user is working with a chainsaw for
the first time: Practice cutting logs on a
sawhorse or other support.
►If you have any queries: Contact a STIHL
servicing dealer for assistance.
4.4 Clothing and Equipment
WARNING
■Long hair can become entangled in the saw
during operation. This can result in serious
injuries.
►Tie up long hair so that it is above shoulder
level.
■ Objects can be thrown through the air at high
speed during operation. This can result in per‐
sonal injury.
► Wear close-fitting safety glasses.
Suitable safety glasses that have
been tested and labeled in accord‐
ance with EN 166 or national stand‐
ards are available from retailers.
►STIHL recommends that you wear a face
shield.
► Wear a long-sleeved, snug-fitting upper
garment.
■ Noise occurs during operation. Noise can
harm your hearing.
► Wear hearing protection.
■ Falling objects can cause head injuries.
► If there is a danger of falling objects
during operation: Wear a safety hard
hat.
■ Dust can be whipped up during operation:
Whipped up dust can damage the respiratory
passages and cause allergic reactions.
►If dust is whipped up and forms a cloud:
Wear a dust respirator mask.
■ Inappropriate clothing can snag on wood,
brush or the saw. Not wearing suitable cloth‐
ing may result in serious injury.
►Wear snug-fitting clothing.
► Do not wear a scarf or jewelry.
■ The user can come into contact with the rotat‐
ing saw chain during operation. This can result
in serious injuries.
►Wear long trousers with cut-retardant
inserts.
■ The user can be cut by the wood during oper‐
ation. The user can come into contact with the
saw chain during cleaning and maintenance
work. This can result in personal injury.
►Wear work gloves made of durable mate‐
rial.
■ Wearing unsuitable footwear may cause you
to slip or stumble. Contact with the rotating
saw chain can result in cuts. This can result in
personal injury.
English 4 Safety Precautions
4 0458-729-0121-B

► Wear chainsaw boots with cut retardant
inserts.
4.5 Work Area and Surroundings
WARNING
■Bystanders, children and animals are not
aware of the dangers of the chainsaw or
thrown objects. Bystanders, children and ani‐
mals may be seriously injured and damage to
property may occur.
►Keep bystanders, children and animals
away from the work area.
► Do not leave the chainsaw unattended.
► Make sure that children cannot play with
the chainsaw.
■ The saw is not waterproof. Working in the rain
or a damp location may result in an electric
shock. This can result in injuries to the user
and may damage the saw.
► Do not work in the rain or a damp
location.
■ Electrical components of the chainsaw can
produce sparks. Sparks may cause a fire or an
explosion in an easily combustible or explo‐
sive environment. This can result in serious or
fatal injuries and damage to property.
►Do not work in an easily combustible or
explosive environment.
4.6 Safe Condition
4.6.1 Chainsaw
The chainsaw is in a safe condition if the follow‐
ing points are observed:
–The chainsaw is not damaged.
–The connecting cable, the extension cord and
their plugs are undamaged.
–The saw is clean and dry.
–The chain catcher is not damaged.
–The chain brake is operating properly.
–The controls function properly and have not
been modified.
–The chain lubrication is operating properly.
–Wear marks on the chain sprocket are not
deeper than 0.5 mm.
–A combination of guide bar and saw chain rec‐
ommended in this User Manual is mounted.
–The guide bar and saw chain are properly
mounted.
–The saw chain is properly tensioned.
–Only original STIHL accessories designed for
this chainsaw model are fitted.
–The accessories are correctly attached.
–The oil tank cap is closed.
WARNING
■ If not in safe condition, components may no
longer operate correctly and safety devices
may be disabled. This may result in serous or
fatal injury to people.
►Work only with an undamaged chainsaw.
► Never use a damaged connecting cable,
extension cord or mains plug.
► If the saw is dirty or wet: Clean the saw and
allow it to dry.
► Work only with an undamaged chain
catcher.
► Never modify your chainsaw. Exception:
Mounting a combination of guide bar and
saw chain recommended in this User Man‐
ual.
►If the controls do not function properly: Do
not use your chainsaw.
► Only fit original STIHL accessories
designed for this chainsaw model.
► Mount the guide bar and saw chain as
described in this User Manual.
► Attach accessories as described in this
User Manual or in the User Manual for the
accessories.
►Never insert objects in the chainsaw’s
openings.
► Replace worn or damaged labels.
► If you have any doubts, be sure to consult a
STIHL dealer.
4.6.2 Guide Bar
The guide bar is in a safe condition if the follow‐
ing points are observed:
–Guide bar is not damaged.
–Guide bar is not deformed.
–The minimum groove depth is maintained,
18.4.
–Bar rails are free from burrs.
–Bar groove is not pinched or splayed.
WARNING
■If the guide bar is not in a safe condition, it can
no longer support and guide the saw chain
properly. The rotating saw chain can jump off
the guide bar. This can result in serious or
fatal injuries.
►Work only with an undamaged guide bar.
► If the groove depth is less than the mini‐
mum depth: Mount a new guide bar.
► Deburr the guide bar every week.
► If you have any queries: Contact your
STIHL servicing dealer.
4 Safety Precautions English
0458-729-0121-B 5

4.6.3 Saw Chain
The saw chain is in a safe condition if the follow‐
ing points are observed:
–Chain is not damaged.
–Chain is properly sharpened.
–The service marks on the cutters are still visi‐
ble.
WARNING
■ If components do not comply with safety
requirements, they will no longer function
properly and safety devices may be rendered
inoperative. This can result in serious or fatal
injuries.
►Work only with an undamaged saw chain.
► Sharpen the chain properly.
► If you have any queries: Contact your
STIHL servicing dealer for assistance.
4.7 Working
4.7.1 Sawing
WARNING
■ Always work within calling distance of others
► in case help is needed.
■ The user cannot concentrate on the work in
certain situations. The user can lose control of
the saw, trip or fall and be seriously injured.
►Work calmly and carefully.
► If light and visibility are poor: Do not use
your saw.
► Operate the chain saw alone.
► Do not work above shoulder height.
► Watch out for obstacles.
► Stand on the ground while working and
keep a good balance. If it is necessary to
work at heights: Use a lift bucket or a safe
platform.
►If you feel tired. Take a break.
■ The rotating saw chain can cut the operator.
This can result in serious injuries.
► Do not touch the rotating saw chain.
► If the saw chain is blocked by an object:
Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet. Then remove the object
causing the blockage.
■The rotating chain becomes hot and expands.
If the chain is not lubricated sufficiently and
retensioned, it can come off the guide bar or
break. This can result in serious injuries and
damage to property.
►Use special chain oil.
► Check chain tension regularly during cutting
work. If chain tension is insufficient: Ten‐
sion the chain.
■If the behavior of the saw changes during
operation or feels unusual, it may no longer be
in a safe condition. This can result in serious
injuries and damage to property.
►Engage the chain brake, disconnect exten‐
sion cable’s plug from the wall outlet and
contact your STIHL servicing dealer.
■Saw vibrations may occur during operation.
► Wear gloves.
► Take regular breaks.
► If signs of circulation problems occur: Seek
medical advice.
■ Sparks may occur if the rotating chain makes
contact with a hard object. Sparks may cause
a fire in an easily combustible location. This
can result in serious or fatal injuries and dam‐
age to property.
►Do not work in an easily combustible loca‐
tion.
■ Note that the saw chain continues to rotate for
a short period after you release the trigger.
The rotating saw chain can cut the user. This
can result in serious injuries.
►Wait for the chain to come to a standstill.
0000-GXX-1245-A0
1
21
2
WARNING
■The guide bar can be pinched when cutting
wood that is under tension. The user can lose
control of the saw and be seriously injured.
►Make a relieving cut in the compression
side (1) first, then perform bucking cut at
the tension side (2).
4.7.2 Limbing
WARNING
■If the underside of the felled tree is limbed
first, it will no longer be supported on the
ground by branches. The tree can move dur‐
ing cutting work. This can result in serious or
fatal injuries.
►Cut through large limbs on the underside of
the tree only after it has been bucked.
English 4 Safety Precautions
6 0458-729-0121-B

► Do not stand on the log while limbing it.
■ A branch may fall to the ground during limbing.
The user may trip, fall or be seriously injured.
► Limb from the base to the crown of the tree.
4.7.3 Felling
WARNING
■Inexperienced users cannot assess the dan‐
gers of felling a tree. This can result in serious
or fatal injuries and damage to property.
►If you have any queries: Do not fell the tree
yourself.
■ A tree and branches can fall on bystanders or
objects during the felling operation. This can
result in serious or fatal injuries and damage
to property.
►Determine direction of fall so that the area
in which the tree falls is clear.
► Do not allow bystanders, children or ani‐
mals within 2.5 tree lengths of the felling
site.
►Remove broken or dead branches from the
tree crown before felling.
► If broken or dead branches cannot be
removed from the crown: Do not fell the
tree.
►Observe tree crown and crowns of neigh‐
boring trees and keep clear of falling
branches.
■When the tree falls the trunk can break or
spring back in the direction of the user. This
can result in serious or fatal injuries.
►Plan an escape path sideways behind the
tree.
► Walk backwards along the escape path and
observe the falling tree.
► Do not walk backwards down slopes.
■ Obstacles in the work area and on the escape
path can hinder the user. The user may trip
and fall. This can result in serious or fatal inju‐
ries.
►Remove all obstacles from the work area
and escape path.
■ If you cut into or through the hinge, stabilizing
strap or holding strap too soon, the intended
direction of fall cannot be controlled or the tree
can fall prematurely. This can result in serious
or fatal injuries and damage to property.
►Do not cut into or through the hinge.
► Cut through the stabilizing strap or holding
strap last.
► If the tree begins to fall too soon: Abandon
the felling cut and retreat along the escape.
■ Kickback can occur if the rotating chain in the
upper quadrant of the bar nose makes contact
with a hard felling wedge and is suddenly
braked. This can result in serious or fatal inju‐
ries.
►Use aluminum or plastic felling wedges.
■ If the tree does not fall all the way to the
ground or gets caught on another tree, the
operator cannot finish the operation in a con‐
trolled manner.
►Stop the felling operation and use a cable
winch or suitable vehicle to pull the tree to
the ground.
4.8 Reactive Forces
4.8.1 Kickback
0000-GXX-2129-A0
Kickback can be caused for the following rea‐
sons:
–The rotating saw chain in the upper quadrant
of the bar nose makes contact with a hard
object and is suddenly braked.
–The rotating saw chain is pinched at the bar
nose.
The chain brake cannot prevent kickback.
WARNING
0000-GXX-2107-A0
■If kickback occurs, the saw can be thrown up
in the direction of the operator. The operator
can lose control of the saw and be seriously or
fatally injured.
►Hold the saw firmly with both hands.
► Always keep your body out of the plane of
the cutting attachment.
► Operate the saw as described in this
instruction manual.
► Do not cut with the upper quadrant of the
bar nose.
4 Safety Precautions English
0458-729-0121-B 7

► Always cut with a properly sharpened and
tensioned saw chain.
► Use a reduced kickback saw chain.
► Use a guide bar with a narrow radius nose.
► Always cut with the chain running at full
speed.
4.8.2 Pull-in
0000-GXX-1348-A0
The saw is pulled away from the operator when
the bottom of the bar is used for cutting.
WARNING
■ If the rotating chain makes contact with a hard
object and is suddenly pinched, the saw is
abruptly jerked away from the operator. The
operator can lose control of the saw and be
seriously or fatally injured.
►Hold the saw firmly with both hands.
► Operate the saw as described in this
instruction manual.
► Keep the guide bar straight in the cut.
► Apply the spiked bumper properly.
► Always cut with the chain running at full
speed.
4.8.3 Pushback
0000-GXX-1349-A0
The saw is pushed back toward the operator
when the top of the bar is used for cutting.
WARNING
■If the rotating chain makes contact with a hard
object and is suddenly pinched, the saw can
be abruptly pushed back toward the operator.
The operator can lose control of the saw and
be seriously or fatally injured.
►Hold the saw firmly with both hands.
► Operate the saw as described in this
instruction manual.
► Keep the guide bar straight in the cut.
► Always cut with the chain running at full
speed.
4.9 Connecting to Power Supply
Contact with live components may occur for the
following reasons:
–The connecting cable or extension cable is
damaged.
–Connecting cable plug or extension cable is
damaged.
–Wall outlet is not properly installed.
DANGER
■ Contact with live components can result in an
electric shock. This can result in serious or
fatal injuries.
►Check that the connecting cable, extension
cable and their plugs are not damaged.
If the connecting cable or extension
cable is damaged:
► Do not touch damaged areas.
► Disconnect the plug from the wall
outlet.
►Never touch the connecting cable, exten‐
sion cable or their plugs with wet hands.
► Insert the plug of the connecting cable or
extension cable in a properly installed fused
wall outlet with ground contact.
►Connect the chainsaw via a ground fault cir‐
cuit interrupter (30 mA, 30 ms).
■ A damaged or unsuitable extension cable can
cause an electric shock. This can result in
serious or fatal injuries.
►Use an extension cable with the correct
wire gauge, 18.2.
► Use a splash-proof extension cable
approved for outdoor use.
► Use an extension cable with the same
specifications as the chainsaw’s connecting
cable, 18.2.
WARNING
■Overvoltage can occur in the chainsaw if the
line voltage or frequency are incorrect during
operation. This can damage the saw.
►Make sure the line voltage and frequency
agree with the data on the saw’s rating
label.
■If several saws are connected to one wall out‐
let, their cables may be overloaded during
operation. The cables can overheat and cause
a fire. This can result in serious or fatal injuries
and damage to property.
English 4 Safety Precautions
8 0458-729-0121-B

► Connect each saw to a separate wall outlet.
► Do not connect saws to multiple sockets.
■ A carelessly laid connecting or extension
cable can be damaged and cause others to
trip or fall. This can result in injuries and may
damage the connecting cable or extension
cable.
►Position the connecting and extension
cables so that there is no risk of contact
with the rotating chain.
►Position and mark connecting cable and
extension cable so they do not represent a
trip hazard.
►Position the connecting and extension
cables so that they are not under tension or
entangled.
►Position the connecting and extension
cables so that they cannot be damaged,
kinked, pinched or chafed.
►Protect the connecting cable and extension
cable from heat, oil and chemicals.
► Lay the connecting and extension cables on
a dry surface.
■ The extension cable becomes hot during oper‐
ation. If the heat cannot dissipate, it may
cause a fire.
►If you use a cable drum: Unwind the exten‐
sion cable to its full length.
4.10 Transporting
WARNING
■The saw may turn over or shift during trans‐
port. This may result in personal injuries and
damage to property.
►Disconnect the extension cable’s plug from
the wall outlet.
► Disconnect the saw’s plug from the exten‐
sion cable.
► Engage the chain brake.
► Fit the scabbard so that it completely cov‐
ers the guide bar.
► Secure the chainsaw with lashing straps or
a net to prevent it turning over and moving.
4.11 Storing
WARNING
■Children are not aware of and cannot assess
the dangers of a chainsaw and can be seri‐
ously injured.
►Disconnect the saw’s plug from the exten‐
sion cable.
► Disconnect the extension cable’s plug from
the wall outlet.
► Engage the chain brake.
► Fit the scabbard so that it completely cov‐
ers the guide bar.
► Store the saw out of the reach of children.
■ Dampness can corrode the electrical contacts
on the saw and metal components. This can
damage the saw.
►Store the saw in a clean and dry condition.
4.12 Cleaning, Maintenance and
Repair
WARNING
■ The saw may start unintentionally if the plug is
not removed from the wall outlet during clean‐
ing, maintenance or repair operations. This
may result in serious injury to people and
damage to property.
►Disconnect the extension cable’s plug from
the wall outlet.
► Disconnect the saw’s plug from the exten‐
sion cable.
► Engage the chain brake.
■ Aggressive cleaning agents, a water jet or
pointed objects can damage the chainsaw,
guide bar and saw chain. If the chainsaw,
guide bar or saw chain are not cleaned cor‐
rectly, components may no longer function
properly or safety devices may be rendered
inoperative. They may cause serious injury to
persons.
► Clean the chainsaw, guide bar and saw
chain as described in this user manual.
■ If the saw, guide bar or saw chain are not are
not serviced or repaired correctly, components
may no longer function properly or safety devi‐
ces may be rendered inoperative. This may
result in serous or fatal injury to people.
►Do not attempt to service or repair the
chainsaw.
► If the connecting cable is faulty or dam‐
aged: Have the connecting cable replaced
by a STIHL dealer.
►If the chainsaw needs to be serviced or
repaired: Contact your STIHL servicing
dealer for assistance.
►Service or repair the guide bar and saw
chain as described in this User Manual.
■ The user may be cut by the sharp cutters
while cleaning or servicing the saw chain. This
may result in injury to the user.
►Wear work gloves made from resistant
material.
4 Safety Precautions English
0458-729-0121-B 9

5 Preparing the Saw for
Operation
5.1 Preparing the Saw for Opera‐
tion
Perform the following steps before starting work:
► Make sure the following components are in a
safe condition:
–Chain saw and connecting cable, 4.6.1.
–Guide bar, 4.6.2.
–Saw chain, 4.6.3.
►Clean the saw, 14.1.
►Mount the bar and chain, 6.1.1.
►Tension the saw chain, 6.2.
►Fill up with chain oil, 6.3.
► Connect saw’s plug to an extension cable and
the extension cable’s plug to a convenient wall
outlet.
►Check the chain brake, 9.4.
►Check the controls, 9.5.
►Check chain lubrication, 9.6.
► If you cannot carry out this work: Do not use
your chainsaw and contact your STIHL servic‐
ing dealer.
6 Assembling the Saw
6.1 Mounting and Removing the
Bar and Chain
6.1.1 Mounting the Bar and Chain
The bar and chain combinations that can be
used with the chain sprocket are listed in the
specifications, 19.
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
0000-GXX-2108-A0
1
► Unscrew the nut (1).
► Remove the chain sprocket cover (2).
0000-GXX-2111-A0
4
3
► Turn the tensioning screw (3) counterclock‐
wise until the tensioner slide (4) butts against
the left end of the housing.
0000-GXX-2130-A0
► Fit the chain in the bar groove so that the
arrows on the tie straps on top of the bar point
in the direction of rotation.
0000-GXX-2109-A0
8
5
6
7
► Fit the guide bar and chain on the saw and
check the following points:
–Chain drive links are seated in teeth of
chain sprocket (5).
–Head of screw (6) locates in slot in guide
bar (8).
–Peg of tensioner slide (4) engages hole (7)
in guide bar (8).
The guide bar (8) may be either way round. The
logo on the guide bar (8) may also be upside
down.
► Disengage the chain brake.
English 5 Preparing the Saw for Operation
10 0458-729-0121-B

0000-GXX-2112-A0
3
► Turn the tensioning screw (3) clockwise until
the chain fits snugly against the bar. Make
sure the drive link tangs engage the bar
groove.
The guide bar and chain are seated against
the saw.
► Fit the sprocket cover (2) so that it is flush with
the saw.
► Fit and tighten down the nut (1).
6.1.2 Removing the Bar and Chain
► Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet.
► Unscrew the nut.
► Remove the sprocket cover.
► Turn the tensioning screw counterclockwise as
far as stop.
The chain is now slack.
► Remove the bar and chain.
6.2 Tensioning the Saw Chain
The saw chain expands or contracts during cut‐
ting work. Chain tension changes as a result.
Check chain tension regularly during operation
and readjust if necessary.
► Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet.
1
2
0000-GXX-2113-A1
a
► Loosen the nut (1).
► Disengage the chain brake.
► Hold the bar nose up and turn the tensioning
screw (2) clockwise until chain sag ‘a’ in the
center of the bar is 1 - 2 mm.
► If a Carving guide bar is used: Turn the ten‐
sioning screw (2) clockwise until the drive links
on the underside of the bar are just half visi‐
ble.
► Pull the hand guard back toward the handle‐
bar and hold it there.
► Pull the chain along the bar with two fingers.
► If the effort to pull the chain along the bar by
hand is too high: Readjust chain tension.
► Hold the bar nose up and tighten down the nut
(1) firmly.
► If chain sag ‘a’ in the center of the bar is not 1
- 2 mm: Readjust chain tension.
► If you use a Carving bar and the drive links on
the underside of the bar are less than half visi‐
ble: Readjust chain tension.
6.3 Filling Up with Saw Chain Oil
The saw chain oil lubricates and cools the rotat‐
ing chain.
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Place your saw on a level surface so that the
oil tank cap faces up.
► Use a damp cloth to clean the oil tank cap and
the area around it.
0000-GXX-2115-A0
► With a suitable tool, turn the oil tank cap coun‐
terclockwise until it can be removed.
► Remove the oil tank cap.
► Fill up with saw chain oil, taking care not to
spill any oil and not to overfill the tank.
0000-GXX-2131-A0
► Place the oil tank cap on the tank opening.
► With a suitable tool, turn the oil tank cap clock‐
wise and tighten it down firmly.
The oil tank is closed.
6 Assembling the Saw English
0458-729-0121-B 11

7 Engaging and Disengaging
the Chain Brake
7.1 Engaging the Chain Brake
The saw is equipped with a chain brake.
The chain brake is activated by the inertia of the
front hand guard if the kickback force is high
enough or can be engaged by the operator.
0000-GXX-2110-A0
► Push the hand guard away from the front han‐
dle with your left hand.
The hand guard engages with an audible click.
The hand guard points to the symbol . The
chain brake is engaged.
7.2 Disengaging the Chain Brake
0000-GXX-2118-A0
► Pull the hand guard toward the handlebar with
your left hand.
The hand guard engages with an audible click.
The hand guard points to the symbol . The
chain brake is disengaged.
8 Switching the Saw On/Off
8.1 Switching On
► Hold the saw with your right hand on the con‐
trol handle – wrap your thumb around the con‐
trol handle.
► Disengage the chain brake.
► Hold the saw with your left hand on the front
handle – wrap your thumb around the handle.
1
2
0000-GXX-2121-A0
► Depress the lockout button (1) with your
thumb and hold it there.
► Pull the trigger (2) with your index finger and
hold it there.
The motor is accelerated and the chain
rotates.
8.2 Switching Off
► Release the trigger and lockout lever.
The chain stops rotating.
► If the chain continues to rotate: Engage the
chain brake, disconnect extension cord’s plug
from the wall outlet and contact your STIHL
servicing dealer.
Your saw has a malfunction.
9 Checking the Saw
9.1 Checking the Chain Sprocket
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Disengage the chain brake.
► Remove the chain sprocket cover.
► Remove the bar and chain.
0000-GXX-1226-A0
a
► Use a STIHL gauge to check the wear marks
on the sprocket.
► If wear marks are deeper than a = 0.5 mm: Do
not use your chain saw and contact your
STIHL servicing dealer.
The chain sprocket must be replaced.
9.2 Checking the Guide Bar
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Remove the chain and guide bar.
English 7 Engaging and Disengaging the Chain Brake
12 0458-729-0121-B

0000-GXX-1217-A0
► Measure depth of bar groove with scale on
STIHL filing gauge.
► Install a new guide bar if one of the following
points applies:
–Guide bar is damaged.
–Measured bar depth is less than specified
minimum depth, 18.4.
–Bar groove is pinched or splayed.
► If you have any queries: Contact your STIHL
servicing dealer.
9.3 Checking the Saw Chain
► Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet.
1
0000-GXX-1218-A0
2
► Use a STIHL filing gauge (2) to check the
height of the depth gauges (1). The STIHL fil‐
ing gauge must match the chain pitch.
► If a depth gauge (1) projects from the filing
gauge (2): Lower the depth gauge (1), 15.3.
0000-GXX-1372-A0
1
23
4
► Make sure the service marks (1 to 4) on the
cutters are visible.
► If one of the service marks is not visible on a
cutter: Do not use your chainsaw and contact
your STIHL servicing dealer.
► Use a STIHL filing gauge to check that a filing
angle of 30° has been maintained on all cut‐
ters. The STIHL filing gauge must match the
chain pitch.
► If a filing angle of 30° has not been main‐
tained: Resharpen the saw chain.
► If you have any queries: Contact your STIHL
servicing dealer.
9.4 Testing the Chain Brake
► Engage the chain brake and disconnect the
extension cable’s plug from the wall outlet.
WARNING
■ The chain's cutters are very sharp. There is a
risk of cut injuries.
► Wear work gloves made of durable mate‐
rial.
► Try to pull the chain along the guide bar by
hand.
If the chain cannot be pulled along the bar by
hand, the chain brake is functioning.
► If the chain can be pulled along the bar by
hand: Do not use your chainsaw and contact
your STIHL servicing dealer.
The chain brake is defective.
9.5 Checking the Controls
Lockout button and trigger lever
► Engage the chain brake and disconnect the
extension cable’s plug from the wall outlet.
► Attempt to pull the trigger lever without
depressing the lockout button.
► If the trigger can be pulled: Do not use your
chainsaw and contact your STIHL servicing
dealer.
The lockout button is faulty.
► Depress the lockout button and hold it in that
position.
► Pull the trigger and then let it go.
► If the trigger is stiff or does not spring back to
its idle position: Do not use your chainsaw and
contact your STIHL servicing dealer.
The trigger has a malfunction.
Switching on
► Connect the extension cable’s plug to a wall
outlet.
► Disengage the chain brake.
► Depress the lockout button and hold it in that
position.
► Pull the trigger and hold it there.
The chain rotates.
► Release the trigger.
The chain stops rotating.
9 Checking the Saw English
0458-729-0121-B 13

► If the chain continues to rotate: Engage the
chain brake, disconnect extension cable’s plug
from the wall outlet and contact your STIHL
servicing dealer.
Your saw has a malfunction.
9.6 Checking Chain Lubrication
0000-GXX-2116-A0
1
► Check oil level in inspection window.
► If level is below “OIL min” (1) mark: Fill up with
chain oil.
Insufficient chain oil in the tank.
► Connect the extension cord’s plug to a wall
outlet.
► Disengage the chain brake.
► Hold the guide bar over a light surface.
► Switch on the saw.
Chain oil is thrown off the chain and is visible
on the light surface. Chain lubrication is oper‐
ating properly.
► If no chain oil can be seen:
► Fill up with chain oil.
► Check chain lubrication again.
► If chain oil is still not visible on the light sur‐
face: Do not use your chain saw and con‐
tact your STIHL servicing dealer. Chain
lubrication is defective.
10 Operating the Saw
10.1 Holding and Controlling the
Chain Saw
0000-GXX-2107-A0
► Hold and control your saw with your left hand
on the front handle and your right hand on the
control handle. Wrap thumb of left hand
around the front handle and thumb of right
handle around the control handle.
10.2 Cutting
WARNING
■ If kickback occurs, the saw can be thrown up
in the direction of the operator. This may result
in serious or fatal injuries.
►Always cut with the chain running at full
speed.
► Do not cut with the upper quadrant of the
bar nose.
► Begin the cut with the chain running at full
speed and keep the guide bar vertical.
0000-GXX-2117-A0
► Engage the bumper spike and use it as a ful‐
crum.
► Guide the full width of the bar into the wood
and reposition the bumper spike as required.
► Take the weight of the saw at the end of the
cut.
10.3 Limbing
000SY129
► Support the saw on the log.
► With the chain running a full speed, pivot the
bar upwards against the limb.
► Cut through the limb with the top of the bar.
0000-GXX-1245-A0
1
21
2
English 10 Operating the Saw
14 0458-729-0121-B

► If the limb is under tension: Make the relieving
cut (1) at the compression side and then per‐
form bucking cut (2) from the tension side.
10.4 Felling
10.4.1 Determining direction of fall and
escape path
► Determine direction of fall so that the area in
which the tree falls is clear.
B
B
0000-GXX-1246-A0
► Observe the following points when planning
escape path (B):
–Escape path (B) at an angle of 45° to direc‐
tion of fall (A).
–No obstacles on the escape path (B).
–The top of the tree can be observed.
–If the escape path (B) is on a slope, it must
be parallel to the slope.
10.4.2 Preparing work area at base of tree
► Remove obstacles from work area at tree
base.
► Remove growth from tree base.
0000-GXX-1247-A0
► If the tree has large, healthy buttress roots:
Make vertical cut first and then a horizontal
cut, and remove the resulting piece.
10.4.3 Cutting the felling notch
The felling notch determines the direction in
which the tree falls. Country-specific standards
for making the felling notch must be observed.
0000-GXX-1249-A0
► Position the saw so that the felling notch is an
right angles to the direction of fall and the saw
is close to the ground.
► Make the horizontal cut.
► Make the angle cut at 45° to the horizontal cut.
0000-GXX-1250-A1
► If the wood is sound and long-fibered:
Observe the following points when making
sapwood cuts:
–The cuts must be the same at both sides.
–The cuts must be at same height as bottom
of felling notch.
–The width of the cuts is 1/10 of the trunk
diameter.
The trunk does not splinter when the tree falls.
10.4.4 Basic information on felling cut
Ø
1/10
0000-GXX-1251-A1
C
CE
G
C Felling notch
The felling notch determines the direction of
fall.
D Hinge
The hinge helps control the falling tree. The
width of the hinge is 1/10 of the trunk diame‐
ter.
10 Operating the Saw English
0458-729-0121-B 15

E Felling cut
The tree is felled with the felling cut. The fell‐
ing cut is 1/10 of the trunk diameter (at least 3
cm) above the bottom of the felling notch.
F Stabilizing strap
The stabilizing strap supports the tree and
helps prevent it from falling prematurely. The
width of the stabilizing strap is 1/10 to 1/5 of
the trunk diameter.
G Holding strap
The holding strap supports the tree and helps
prevent it from falling prematurely. The width
of the holding strap is 1/10 to 1/5 of the trunk
diameter.
10.4.5 Plunge cutting
Plunge cutting is a technique required for felling.
3.
1.
2.
0000-GXX-1252-A0
► Begin cut with the lower portion of the guide
bar nose – with chain running at full speed.
► Cut until depth of kerf is twice the width of the
guide bar.
► Swing the saw into plunge-cutting position.
► Perform the plunge cut
10.4.6 Selecting the Appropriate Felling Cut
The choice of appropriate felling cut depends on
the following conditions:
–The natural inclination of the tree
–The tree’s branch formation
–Damage to the tree
–The tree’s state of health
–If there is snow on the tree: the snow load
–The direction of slope
–Wind direction and speed
–Nearby trees, if any
There are different features of these conditions.
Only two features are described in this Instruc‐
tion Manual.
0000-GXX-1253-A0
12
1 Normal tree
A normal tree is vertical and has an even
crown.
2 Leaner
A leaner stands at an angle and the crown
faces in the direction of fall.
10.4.7 Felling normal, small diameter tree
A normal tree is felled with a felling cut and stabi‐
lizing strap. This felling cut must be performed if
the tree diameter is less than the guide bar’s
length.
► Shout a warning.
0000-GXX-1254-A0
1.
2.
► Plunge the guide bar into the felling cut until it
is visible at the other side of the trunk,
10.4.5.
► Apply the spiked bumper behind the hinge and
use it as a pivot.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of stabilizing
strap.
0000-GXX-1255-A0
3.
► Insert a felling wedge. The felling wedge must
match the tree diameter and the width of the
felling cut.
► Shout a warning.
English 10 Operating the Saw
16 0458-729-0121-B

► With outstretched arms, cut through the stabi‐
lizing strap horizontally from outside at the
same level as the felling cut.
The tree falls.
10.4.8 Felling normal, large diameter tree
A normal tree is felled with a felling cut and stabi‐
lizing strap. This felling cut must be performed if
the tree diameter is greater than the guide bar’s
length.
► Shout a warning.
0000-GXX-1256-A0
1.
2. 3.
4. 5.
► Apply the spiked bumper at the same height
as the felling cut and use it as a pivot.
► Hold the saw horizontally and swing it into the
felling cut as far as possible.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of stabilizing
strap.
► Move to the other side of the tree.
► Plunge the guide bar into the felling cut at the
same height.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of stabilizing
strap.
6.
0000-GXX-1257-A0
► Insert a felling wedge. The felling wedge must
match the tree diameter and the width of the
felling cut.
► Shout a warning.
► With outstretched arms, cut through the stabi‐
lizing strap horizontally from outside at the
same level as the felling cut.
The tree falls.
10.4.9 Felling a small diameter leaner
A leaner is felled with a felling cut and holding
strap. This felling cut must be performed if the
tree diameter is less than the guide bar’s length.
► Shout a warning.
0000-GXX-1258-A0
1. 2.
► Plunge the guide bar into the felling cut until it
is visible at the other side of the trunk,
10.4.5.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of holding strap.
0000-GXX-1259-A0
► Shout a warning.
► With arms outstretched, cut through the hold‐
ing strap from outside at a downward angle.
The tree falls.
10.4.10 Felling a large diameter leaner
A leaner is felled with a felling cut and holding
strap. This felling cut must be performed if the
tree diameter is greater than the guide bar’s
length.
► Shout a warning.
0000-GXX-1260-A0
3.
2.
1.
5. 6.
4.
► Apply the spiked bumper behind the holding
strap at the same height as the felling cut and
use it as a pivot.
► Hold the saw horizontally and swing it into the
felling cut as far as possible.
10 Operating the Saw English
0458-729-0121-B 17

► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of holding strap.
► Move to the other side of the tree.
► Apply the spiked bumper behind the hinge at
the same height as the felling cut and use it as
a pivot.
► Hold the saw horizontally and swing it into the
felling cut as far as possible.
► Enlarge felling cut in direction of hinge.
► Enlarge felling cut in direction of holding strap.
0000-GXX-1261-A0
► Shout a warning.
► With arms outstretched, cut through the hold‐
ing strap from outside at a downward angle.
The tree falls.
10.5 Resetting Overload Protection
The chain saw is equipped with overload protec‐
tion. The overload protection interrupts the power
supply to the chain saw in the case of mechani‐
cal overload. The overload protection thus pre‐
vents damage to the saw.
► Pull the guide bar out of the cut.
► Wait a few minutes.
The chain saw must cool down.
1
0000-GXX-1899-A0
► Depress the reset button (1).
The reset button (1) engages in position. The
circuit is no longer interrupted.
► If the reset button (1) does not engage in posi‐
tion: Wait a few minutes and then depress the
reset button (1) again.
The saw has not cooled down sufficiently.
► Switch on the saw and run it at full speed for
about 15 seconds.
This cools the motor and considerably delays
the overload protection tripping again.
11 After Finishing Work
11.1 After Finishing Work
► Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet.
► Disconnect the saw’s plug from the extension
cable.
► Clean the saw.
► Clean the bar and chain.
► Loosen nut on the chain sprocket cover.
► Turn the tensioning screw two full turns coun‐
terclockwise.
The chain is now slack.
► Tighten down the nut.
► Fit the scabbard so that it completely covers
the guide bar.
12 Transporting
12.1 Transporting the Chainsaw
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Disconnect the saw’s plug from the extension
cable.
► Fit the chain scabbard so that it completely
covers the guide bar.
Carrying the chainsaw
► Carry the chainsaw by holding the front handle
in your right hand with the guide bar pointing
to the rear.
Carrying the chainsaw in a vehicle
► Secure the saw to prevent turnover and move‐
ment.
13 Storing
13.1 Storing the Chainsaw
► Switch off the saw, engage the chain brake
and disconnect the extension cable’s plug
from the wall outlet.
► Disconnect the saw’s plug from the extension
cable.
► Fit the scabbard so that it completely covers
the guide bar.
► Observe the following points when storing the
saw:
–Saw is out of the reach of children.
–The saw is clean and dry.
► If you store the saw for more than 3 months:
Remove the bar and chain.
English 11 After Finishing Work
18 0458-729-0121-B

14 Cleaning
14.1 Cleaning the chainsaw
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Clean the chainsaw with a damp cloth or
STIHL resin solvent.
► Clean vents with a paintbrush.
► Remove the chain sprocket cover.
► Clean the area around the chain sprocket with
a damp cloth or STIHL resin solvent.
► Fit the chain sprocket cover.
14.2 Cleaning the Bar and Chain
► Switch off the saw, engage the chain brake
and disconnect the extension cord’s plug from
the wall outlet.
► Remove the bar and chain.
2
0000-GXX-2124-A0
3
3
1
► Clean the oil port (1), oil inlet hole (2) and bar
groove (3) with a soft brush or STIHL resin
solvent.
► Clean the saw chain with a soft brush or
STIHL resin solvent.
► Mount the bar and chain.
15 Maintenance
15.1 Maintenance Intervals
The maintenance intervals are dependent on the
environmental and operating conditions. STIHL
recommends the following maintenance inter‐
vals:
Chain brake
► Have the chain brake serviced by a STIHL
servicing dealer at the following intervals:
–Full-time usage: every 3 months
–Part-time usage: every 6 months
–Occasional usage: every 12 months
Weekly
► Check the chain sprocket.
► Check and deburr the guide bar.
► Check and sharpen the saw chain.
Monthly
► Have the oil tank cleaned by a STIHL servic‐
ing dealer.
15.2 Deburring the Guide Bar
A burr can build up on the outer edge of the
guide bar.
► Remove burr with a flat file or a STIHL guide
bar dressing tool.
► If you have any queries: Contact your STIHL
servicing dealer.
15.3 Sharpening the Saw Chain
Correctly sharpening saw chains requires a lot of
practice.
STIHL files, STIHL filing aids, STIHL sharpeners
and the brochure “Sharpening STIHL Saw
Chains” help you achieve the right results. To
obtain the brochure visit http://www.stihl.com/
sharpening-brochure.
STIHL recommends you have saw chains
resharpened by a STIHL servicing dealer.
WARNING
■ The chain's cutters are very sharp. There is a
risk of cut injuries.
► Wear work gloves made of durable mate‐
rial.
0000-GXX-1219-A0
► File each cutter with a round file so that the
following points are observed:
–Round file matches the chain pitch.
–File from the inside to the outside of the cut‐
ter.
–Hold the file at right angle to the guide bar.
–Maintain a filing angle of 30°.
0000-GXX-1220-A1
14 Cleaning English
0458-729-0121-B 19

► File down the depth gauges with a flat file so
that they are level with the STIHL filing gauge
and parallel to the service mark. The STIHL fil‐
ing gauge must match the chain pitch.
► If you have any queries: Contact your STIHL
servicing dealer for assistance.
16 Repairing
16.1 Repairing the Chain Saw,
Guide Bar and Saw Chain
The chain saw, guide bar and saw chain cannot
be repaired by the user.
► If the saw, guide bar or saw chain is damaged:
Do not use your saw, guide bar or saw chain,
and contact your STIHL servicing dealer.
17 Troubleshooting
17.1 Troubleshooting Chainsaw
Condition Cause Remedy
Saw does not start
when switched on.
Connecting cable plug or extension
cable plug not connected.
► Reconnect connecting cable plug or
extension cable plug.
Miniature circuit breaker (fuse) or
ground fault circuit interrupter has trip‐
ped. Circuit is overloaded or faulty.
► Determine reason for circuit breaker
tripping and rectify the problem.
Switch on miniature circuit breaker
(fuse) or ground fault circuit inter‐
rupter.
► Switch off other consumers in the
same circuit.
Wall outlet’s fuse rating is too low. ► Insert the connecting cable plug in a
wall outlet with the correct fuse rat‐
ing, 18.1.
Wire gauge of extension cable is
wrong.
► Use an extension cable of the right
wire gauge. 18.2
The extension cable is too long. ► Use an extension cable of the cor‐
rect length, 18.2
The chain brake is engaged. ► Disengage the chain brake.
The chain is over-tensioned. ► Tension the chain properly.
Bar nose sprocket is blocked. ► Clean the bar nose sprocket with
STIHL resin solvent.
Saw cuts out during
operation
Connecting cable plug or extension
cable plug has been pulled out of wall
outlet.
► Reconnect connecting cable plug or
extension cable plug.
Miniature circuit breaker (fuse) or
ground fault circuit interrupter has trip‐
ped. Circuit is overloaded or faulty.
► Determine reason for circuit breaker
tripping and rectify the problem.
Switch on miniature circuit breaker
(fuse) or ground fault circuit inter‐
rupter.
► Switch off other consumers in the
same circuit.
Wall outlet’s fuse rating is too low. ► Insert the connecting cable plug in a
wall outlet with the correct fuse rat‐
ing, 18.1.
The overload protection has tripped. ► Clean the saw.
► Tension the chain properly.
► Reset overload protection.
Smoke or burning
smell while cutting.
Chain is not properly sharpened. ► Sharpen the chain properly.
English 16 Repairing
20 0458-729-0121-B