STIHL BG 66 L, BG 86 C-E, BG 86 Instruction Manual
STIHL BG 56, 66, 86, SH 56, 86
{
Instruction Manual
Manual de instrucciones
Warning!
Read and follow all safety precautions in
Instruction Manual – improper use can cause
serious or fatal injury.
Advertencia!
Lea y siga todas las precauciones de
seguridad dadas en el manual de
instrucciones – el uso incorrecto puede
causar lesiones graves o mortales.
Instruction Manual
1 - 31
Manual de
instrucciones
33 - 67
Contents
English
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 2
Using the Unit 10
Working Technique 11
Assembling the Blower 12
Assembling the Vacuum Shredder 13
Fuel 14
Original Instruction ManualPrinted on chlorine-free paper
Fueling 15
Starting / Stopping the Engine 15
Cleaning the Air Filter 17
Engine Management 18
Adjusting the Carburetor 18
Checking the Spark Plug 19
Engine Running Behavior 20
Rewind Starter 20
Storing the Machine 21
Inspections and Maintenance by
Dealer 21
Maintenance and Care 22
Main Parts 23
Specifications 24
Printing inks contain vegetable oils, paper can be recycled.
Special Accessories 26
Maintenance and Repairs 26
STIHL Incorporated Federal
Emission Control Warranty
Statement 26
STIHL Incorporated California
Exhaust and Evaporative
Emissions Control Warranty
Statement 28
Trademarks 30
Allow only persons who fully understand
this manual to operate your blower.
To receive maximum performance and
satisfaction from your STIHL blower, it is
important that you read and understand
and follow the maintenance and safety
precautions in chapter "Safety
Precautions and Working Techniques"
before using your blower. For further
information you can go to
www.stihlusa.com.
Contact your STIHL dealer or the STIHL
distributor for your area if you do not
understand any of the instructions in this
manual.
Warning!
Because a blower is a high-speed tool,
some special safety precautions must
be observed as with any other power
tool to reduce the risk of personal injury.
Careless or improper use may cause
serious or even fatal injury. STIHL's
philosophy is to continually improve all
of its products. As a result, engineering
changes and improvements may be
made from time-to-time. If the operating
characteristics or the appearance of
your blower differs from those described
in this manual, please contact your
STIHL dealer for information and
assistance.
{
© ANDREAS STIHL AG & Co. KG, 2008
0458-296-8621-A. M29.L8.CP.
0000000925_004_GB
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
1
English
Guide to Using this Manual
Pictograms
All the pictograms attached to the
machine are shown and explained in this
manual.
Symbols in text
The operating and safety instructions
are supported by illustrations.
The individual steps or procedures
described in the manual may be marked
in different ways:
N A bullet marks a step or procedure
without direct reference to an
illustration.
A description of a step or procedure that
refers directly to an illustration may
contain item numbers that appear in the
illustration. Example:
N Loosen the screw (1)
N Lever (2) ...
In addition to the operating instructions,
this manual may contain paragraphs
that require your special attention. Such
paragraphs are marked with the
symbols and signal words described
below:
Warning!
indicates a hazardous situation which, if
not avoided, could result in severe or
fatal injury.
Caution!
indicates a risk of property damage,
including damage to the machine or its
individual components.
Engineering improvements
STIHL’s philosophy is to continually
improve all of its products. As a result,
engineering changes and improvements
are made from time to time. Therefore,
some changes, modifications and
improvements may not be covered in
this manual. If the operating
characteristics or the appearance of
your machine differ from those
described in this manual, please contact
your STIHL dealer for assistance.
Safety Precautions and
Working Techniques
Because the use of any
blower may be dangerous, special safety
precautions must be
observed to reduce the
risk of personal injury.
It is important that you
read, fully understand
and observe the following
safety precautions and
warnings. Read the
instruction manual and
the safety precautions
periodically. Careless or
improper use may cause
serious or fatal injury.
Have your STIHL dealer show you how
to operate your power tool. Observe all
applicable local safety regulations,
standards and ordinances.
Warning!
Do not lend or rent your power tool without the instruction manual. Be sure that
anyone using it understands the information contained in this manual.
Danger!
indicates an imminent risk of severe or
fatal injury.
2
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
Warning!
Use your blower for clearing leaves,
twigs, grass, clippings, paper, debris,
dust and light snow in yards, gardens,
sport stadiums, parks, paths, streets,
driveways and parking lots and for similar tasks.
Do not use it for other purposes, since
misuse may result in personal injury or
property damage, including damage to
the machine.
Warning!
Minors should never be allowed to use
this power tool. Bystanders, especially
children, and animals should not be
allowed in the area where it is in use.
Warning!
To reduce the risk of injury to bystanders and damage to property, never let
your power tool run unattended. When it
is not in use (e.g. during a work break),
shut it off and make sure that unauthorized persons do not use it.
Most of these safety precautions and
warnings apply to the use of all STIHL
blowers. Different models may have
different parts and controls. See the
appropriate section of your instruction
manual for a description of the controls
and the function of the parts of your
model.
Safe use of a blower involves
1. the operator
2. the power tool
3. the use of the power tool
THE OPERATOR
Physical Condition
You must be in good physical condition
and mental health and not under the
influence of any substance (drugs,
alcohol, etc.) which might impair vision,
dexterity or judgment. Do not operate
this machine when you are fatigued.
Warning!
Be alert – if you get tired, take a break.
Tiredness may result in loss of control.
Working with any power tool can be
strenuous. If you have any condition
that might be aggravated by strenuous
work, check with your doctor before
operating this machine.
Warning!
Prolonged use of a power tool (or other
machines) exposing the operator to
vibrations may produce whitefinger disease (Rayn aud's phenomenon) or
carpal tunnel syndrome.
These conditions reduce the hand's
ability to feel and regulate temperature,
produce numbness and burning
sensations and may cause nerve and
circulation damage and tissue necrosis.
All factors which contribute to whitefinger disease are not known, but cold
weather, smoking and diseases or
physical conditions that affect blood
vessels and blood transport, as well as
high vibration levels and long periods of
exposure to vibration are mentioned as
factors in the development of whitefinger
disease. In order to reduce the risk of
whitefinger disease and carpal tunnel
syndrome, please note the following:
Most STIHL power tools are available
with an anti-vibration ("AV") system
designed to reduce the transmission of
vibrations created by the machine to the
operator's hands. An AV system is
recommended for those persons using
power tools on a regular or sustained
basis.
Keep your hands warm.
Keep the antivibrationsystem well
maintained. A power tool with loose
components or with damaged or worn
antivibration element will tend to have
higher vibration levels.
Maintain a firm grip at all times, but do
not squeeze the handles with constant,
excessive pressure. Take frequent
breaks.
All the above-mentioned precautions do
not guarantee that you will not sustain
whitefinger disease or carpal tunnel
syndrome. Therefore, continual and
regular users should closely monitor the
condition of their hands and fingers. If
any of the above symptoms appear,
seek medical advice immediately.
Warning!
The ignition system of the STIHL unit
produces an electromagnetic field of a
very low intensity. This field may interfere with some pacemakers. To reduce
the risk of serious or fatal injury, persons
with a pacemaker should consult their
physician and the pacemaker manufacturer before operating this tool.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
3
English
Proper Clothing
Warning!
To reduce the risk of injury, the operator
should wear proper protective apparel.
To reduce the risk of
injury to your eyes never
operate your power tool
unless wearing goggles
or properly fitted protective glasses with
adequate top and side
protection complying with
ANSI Z 87.1 (or your
applicable national
standard).
Warning!
Power tool noise may
damage your hearing.
Wear sound barriers (ear
plugs or ear mufflers) to
protect your hearing.
Continual and regular
users should have their hearing
checked regularly.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
Clothing must be sturdy
and snug-fitting, but allow
complete freedom of
movement.
Avoid loose-fitting jackets, scarfs, neckties,
jewelry, flared or cuffed
pants, unconfined long
hair or anything that
could become drawn into
the air intake. Secure hair
so it is above shoulder
level.
Good footing is very
important. Do not wear
sandals or go barefoot.
THE POWER TOOL
For illustrations and definitions of the
power tool parts see the chapter on
"Main Parts and Controls."
Warning!
Never modify this power tool in any way.
Only attachments supplied by STIHL or
expressly approved by STIHL for use
with the specific STIHL model are
authorized. Although certain unauthorized attachments are useable with
STIHL power tools, their use may, in
fact, be extremely dangerous.
If this tool 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. Check in particular that
the fuel system is tight (no leaks) and
that the controls and safety devices are
working properly. Do not continue
operating this machine if it is damaged.
In case of doubt, have it checked by your
STIHL servicing dealer.
Warning!
To reduce the risk of injury, do not operate the machine unless it is fully
assembled with a properly mounted
blower tube.
Small particles (e.g. dust) blown through
the blower tubes and nozzle can cause
a static charging of the blower tubes.
This is especially true in low humidity
and high dust conditions. In order to
reduce the risk of shock from static
charging and subsequent injury from
loss of control, your blower has features
designed to help reduce the build up of
static electricity in the blower tubes and
equalize the charge with the engine
and/or operator:
The control handle is designed to
conduct static electricity through the
throttle cable to the engine and from the
handle through the operator to the
ground.
4
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English
THE USE OF THE POWER TOOL
Transporting the Power Tool
Warning!
When transporting your power tool in a
vehicle, properly secure it to prevent
turnover, fuel spillage and damage to
the unit.
Fuel
Your STIHL power tool uses an oilgasoline mixture for fuel (see the
chapter on "Fuel" of your instruction
manual).
Gasoline is an extremely
flammable fuel. If spilled
and ignited by a spark or
other ignition source, it
can cause fire and serious burn injury or
property damage. Use
extreme caution when
handling gasoline or fuel
mix. Do not smoke or
bring any fire or flame
near the fuel or the power
tool. Note that combustible fuel vapor may
escape from the fuel
system.
Fueling Instructions Before Starting
Warning!
Fuel your power tool in well-ventilated
areas, outdoors. Always shut off the
engine and allow it to cool before refueling. Gasoline vapor pressure may
build up inside the fuel tank depending
on the fuel used, the weather conditions
and the tank venting system.
In order to reduce the risk of burns and
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap on your power tool carefully so as to
allow any pressure build-up in the tank
to release slowly. Never remove the fuel
filler cap while the engine is running.
Select bare ground for fueling and move
at least 10 feet (3 m) from the fueling
spot before starting the engine. Wipe off
any spilled fuel before starting your
machine.
Warning!
Check for fuel leakage while refueling
and during operation. If fuel leakage is
found, do not start or run the engine until
the leak is fixed and any spilled fuel has
been wiped away. Take care not to get
fuel on your clothing. If this happens,
change your clothing immediately.
Unit vibrations can cause
an improperly tightened
fuel filler cap to loosen or
come off and spill quantities of fuel. In order to
reduce the risk of fuel
spillage and fire, tighten
the fuel filler cap by hand
as securely as possible.
Warning!
Always check your power tool for proper
condition and operation before starting,
particularly the throttle trigger, throttle
trigger interlock and stop switch. The
throttle trigger must move freely. Never
attempt to modify the controls or safety
devices.
Warning!
Never use a power tool that is damaged
or not properly maintained.
Warning!
Check that the spark plug boot is
securely mounted on the spark plug – a
loose boot may cause arcing that could
ignite combustible fumes and cause a
fire.
Warning!
Keep the handles clean and dry at all
times; it is particularly important to keep
them free of moisture, pitch, oil, grease
or resin in order for you to maintain a
firm grip and properly control your
power tool.
Starting
Warning!
Start the engine at least 10 feet
(3 meters) from the fueling spot, outdoors only.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
5
English
Warning!
Your power tool is a one-person
machine. Do not allow other persons in
the general work area, even when
starting.
For specific starting instructions, see the
appropriate section of your manual.
Place the power tool on firm ground or
other solid surface in an open area.
Maintain good balance and secure
footing.
Warning!
To reduce the risk of injury from loss of
control, do not attempt to "drop start"
your power tool.
Warning!
When you pull the starter grip, do not
wrap the starter rope around your hand.
Do not let the grip snap back, but guide
the starter rope to rewind it properly.
Failure to follow this procedure may
result in injury to your hand or fingers
and may damage the starter
mechanism.
Warning!
This unit is equipped with an ignition
system that is normally in operational
readiness. After the setting lever is used
to stop the engine, it automatically
springs back to the "on" position. If the
engine is warm, it may be possible to
start it by simply pulling the starter rope,
with no further adjustments. To reduce
the risk of injury, be particularly alert to
keep children away from the unit.
During Operation
Holding and controlling the power
tool
The blower is designed for singlehanded operation with either the right or
left hand on the control handle.
Special care must be taken in slippery
conditions (wet ground, snow) and in
difficult, overgrown terrain. Watch for
hidden obstacles such as tree stumps,
roots and ditches to avoid stumbling. For
better footing, clear away fallen
branches, scrub and cuttings. Be
extremely cautious when working on
slopes or uneven ground.
Warning!
As soon as the engine is
running, this product generates toxic exhaust
fumes containing chemicals, such as unburned
hydrocarbons (including
benzene) and carbon monoxide, that
are known to cause respiratory problems, cancer, birth defects, or other
reproductive harm. Some of the gases
(e.g. carbon monoxide) may be colorless and odorless. To reduce the risk of
serious or fatal injury/illness from inhaling toxic fumes, never run the machine
indoors or in poorly ventilated locations:
Warning!
Once the engine has started, immediately blip the throttle trigger, which
should release the starting throttle and
allow the engine to slow down to idle.
6
Warning!
To reduce the risk of injury from loss of
control, never work on a ladder, in a tree
or any other insecure support. Never
hold the machine above shoulder
height.
Working conditions
Operate and start your power tool only
outdoors in a well ventilated area.
Operate it under good visibility and
daylight conditions only. Work carefully.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
Warning!
Inhalation of certain dusts, especially
organic dusts such as mold or pollen,
can cause susceptible persons to have
an allergic or asthmatic reaction. Substantial or repeated inhalation of dust
and other airborne contaminants, in particular those with a smaller particle size,
may cause respiratory or other illnesses. Control dust at the source
where possible. Use good work practices, such as operating the unit so that
the wind or operating process directs
any dust raised by the power tool away
from the operator. Follow the recommendations of EPA/OSHA/NIOSH and
occupational and trade associations
with respect to dust ("particulate matter"). When the inhalation of dust cannot
be substantially controlled, i.e., kept at
or near the ambient (background) level,
the operator and any bystanders should
wear a respirator approved by
NIOSH/MSHA for the type of dust
encountered.
Warning!
If the substance being blown is a commercial substance, review, understand
and follow all warnings and instructions
contained in the material safety data
sheet for that substance and/or consult
the material manufacturer/supplier. The
state of California and some other
authorities, for instance, have published
lists of substances known to cause cancer, reproductive toxicity, etc.
Warning!
Breathing asbestos dust is dangerous
and can cause severe or fatal injury,
respiratory illness or cancer. The use
and disposal of asbestos-containing
products have been strictly regulated by
OSHA and the Environmental Protection Agency. If you have any reason to
believe that you might be blowing or otherwise disturbing asbestos, immediately
contact your employer or a local OSHA
representative.
Warning!
Dust with silica in its composition may
contain crystalline silica. Silica is a basic
component of sand, quartz, brick, clay,
granite and numerous other minerals
and rocks, including masonry and concrete products. Repeated and / or
substantial inhalation of airborne crystalline silica can cause serious or fatal
respiratory disease, including silicosis.
In addition, the state of California and
some other authorities have listed
respirable crystalline silica as a substance known to cause cancer. When
encountering such materials, always
follow the respiratory precautions mentioned above
Operating instructions
Warning!
In the event of an emergency, switch off
the engine immediately – move the slide
control / stop switch to 0 or STOP
English
In order to reduce
the risk of personal
or even fatal injury
to bystanders from
blown objects
keep bystanders at
least 16 feet (5m)
away when the
power tool is
running.
Stop the engine immediately if you are
approached.
Warning!
To reduce the risk of personal injury, do
not direct air blast towards bystanders,
since the high pressure of the air flow
can injure eyes and can blow small
objects at great speed. Do not direct airblast towards pets.
Warning!
The blower fan between the air intake
and output openings rotates whenever
the engine is running.
Never insert any foreign object into the
air intake of the machine or into the nozzle of the blower. It will damage the fan
wheel and may cause serious injury to
the operator or bystanders as a result of
the object or broken parts being thrown
out at high speed.
Do not place the blower on the ground
when operating at high speed, because
small objects such as sand, grass, dust,
etc. may be pulled into the air intake and
damage the fan wheel. It is best to turn
the machine off when putting it on the
ground.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
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English
Warning!
The muffler other parts of the engine
(e.g. fins of the cylinder, spark plug)
become hot during operation and
remain hot for a while after stopping the
engine. To reduce risk of burns do not
touch the muffler and other parts while
they are hot.
Using the Vacuum Attachment
(only BG 56, BG 86, SH 56, SH 86)
For specific assembling instructions,
see the appropriate section of your
instruction manual.
Your shredder vacuum is designed for
two-handed operation. Hold and operate
the unit with your right hand on the
control handle and your left hand on the
assist handle.
To reduce the risk of injury, do not
operate the machine unless it is fully
assembled with a properly mounted
suction tube and catcher bag.
Wear the catcher bag shoulder strap
over your left shoulder – not across your
chest – so that you can quickly throw off
the unit and catcher bag in an
emergency.
Warning!
To reduce the risk of personal injury from fire and
explosion, never attempt
to pick up hot or burning
substances (e.g. smoldering ashes, glowing
cigarettes)
or combustible fluids (e.g.
gasoline, paint thinners).
Warning!
In order to reduce
the risk of injury
from contact with
rotating parts and
damage to the
engine, the intake screen must always
be closed and the locking tab engaged
when the suction tube is not mounted.
Stop engine and wait until the fan is
stopped before opening the intake
screen.
Warning!
To reduce the risk of fire and burn injury,
keep the area around the muffler clean.
295BA053 KN
Remove excess lubricant and all debris
such as pine needles, branches or
leaves. Let the engine cool down sitting
on concrete, metal, bare ground or solid
wood (e.g. the stump of a felled tree)
away from any combustible substances.
Warning!
Never modify your muffler. The muffler
could be damaged and cause an
increase in heat radiation or sparks,
thereby increasing the risk of fire and
burn injury. You may also permanently
damage the engine. Have your muffler
serviced and repaired by your STIHL
servicing dealer only.
8
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
Catalytic converter
Warning!
Some STIHL power tools
are equipped with a catalytic converter, which is
designed to reduce the
exhaust emissions of the
engine by a chemical
process in the muffler. Due to this process, the muffler does not cool down as
rapidly as conventional mufflers when
the engine returns to idle or is shut off.
To reduce the risk of fire and burn injuries, the following specific safety
precautions must be observed.
Warning!
Since a muffler with a catalytic converter
cools down less rapidly than conventional mufflers, always set your power
tool down in the upright position and
never locate it where the muffler is near
dry brush, grass, wood chips or other
combustible materials while it is still hot.
Warning!
An improperly mounted or damaged cylinder housing or a damaged/deformed
muffler shell may interfere with the cooling process of the catalytic converter.
To reduce the risk of fire or burn injury,
do not continue work with a damaged or
improperly mounted cylinder housing or
a damaged/deformed muffler shell.
Your catalytic converter is furnished with
screens designed to reduce the risk of
fire from the emission of hot particles.
Due to the heat from the catalytic
reaction, these screens will normally
stay clean and need no service or
maintenance. If you experience loss of
performance and you suspect a clogged
screen, have your muffler maintained by
a STIHL servicing dealer.
MAINTENANCE, REPAIR AND
STORING
Warning!
Use only identical STIHL replacement
parts for maintenance and repair. Use of
non-STIHL parts may cause serious or
fatal injury.
Strictly follow the maintenance and
repair instructions in the appropriate
section of your instruction manual.
Please refer to the maintenance chart in
this manual.
Warning!
Always stop the engine and make sure
that the fan is stopped before doing any
maintenance or repair work or cleaning
the power tool. Do not attempt any
maintenance or repair work not
described in your instruction manual.
Have such work performed by your
STIHL servicing dealer only.
Warning!
Use the specified spark plug and make
sure it and the ignition lead are always
clean and in good condition. Always
press spark plug boot snugly onto spark
plug terminal of the proper size. (Note: If
terminal has detachable SAE adapter
nut, it must be securely attached.) A
loose connection between spark plug
terminal and the ignition wire connector
in the boot may create arcing that could
ignite combustible fumes and cause a
fire.
Warning!
Never test the ignition system with the
boot removed from the spark plug or
with a removed spark plug, since uncontained sparking may cause a fire.
Warning!
Do not operate your power tool if the
muffler is damaged, missing or modified. An improperly maintained muffler
will increase the risk of fire and hearing
loss. If your muffler was equipped with a
spark-arresting screen to reduce the
risk of fire, never operate your power
tool if the screen is missing or damaged.
Remember that the risk of forest fires is
greater in hot or dry weather.
Tighten all nuts, bolts and screws except
the carburetor adjustment screws after
each use.
For maintenance items please also refer
to the maintenance chart in this manual.
Store the power tool in a dry and high or
locked location out of reach of children.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
9
English
Before storing for longer than a few
days, always empty the fuel tank. See
chapter "Storing the machine" in this
manual.
Store fuel in an approved and properly
labeled safety-type canister only. Take
care when handling gasoline! For health
and safety reasons, avoid direct contact
with the skin and avoid inhaling fuel
vapor!
Using the Unit
Using the Blower
Your blower is designed for one-handed
operation. It must be carried by the
control handle in the right hand.
Operate the unit only with a
properly mounted blower tube.
The round nozzle is particularly suitable
for use on uneven surfaces (e.g. fields
and lawns).
The fan nozzle (either included with unit
or available as special accessory)
produces a broad and powerful
airstream at ground level. It can be
aimed and controlled very accurately.
This nozzle is highly effective for blowsweeping sawdust, leaves, grass
cuttings, etc. on paved surfaces.
Watch out for small creatures when
blow-sweeping in open areas, yards and
gardens.
In noise-sensitive areas, operate your
unit at the lowest possible engine speed.
If necessary, dampen the surface to be
cleaned in order to avoid creating too
much dust.
Using the Vacuum Shredder
295BA052 KN
295BA053 KN
Your vacuum shredder is designed for
two-handed operation. Hold and operate
the unit with your right hand on the
control handle and your left hand on the
assist handle.
Wear the catcher bag shoulder strap
over your left shoulder, not across your
chest. This enables you to quickly
remove the power tool and catcher bag
in an emergency.
Operate the unit only with a
properly mounted suction tube
and catcher bag.
10
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Vacuuming abrasive material
(such as grit, stone chips, etc.)
causes the blower wheel and
blower housing to wear at a rapid
rate. This results in a considerable
loss of suction power. In such a
case you should contact your
dealer. STIHL recommends a
STIHL servicing dealer.
Take particular care when
vacuuming wet leaves since they
may block the blower wheel and
elbow.
Watch out for small animals when
vacuuming and blow-sweeping in open
areas, yards and gardens.
Working Technique
To minimize blowing time, use a rake
and broom to loosen dirt particles before
you start blowing.
Recommended working technique to
minimize air pollution:
N If conditions are very dusty, dampen
the surfaces before starting work.
N Pull out the nozzle to full length so
that the airstream is at ground level.
N Do not blow particles in the direction
of bystanders, in particular in the
direction of children, pets, open
windows or freshly washed
vehicles. Blow the dirt particles
carefully to a central point.
N Put the dirt in garbage cans. Do not
blow it onto neighboring land.
Recommended working technique to
minimize noise:
N Operate your power tool at
reasonable times only – not early in
the morning, late at night or during
midday rest periods when people
could be disturbed. Keep to the
times prescribed locally. Normal
recommendation for professional
use on weekdays: 9:00hrs to
12:00hrs and 15:00hrs to 17:00hrs.
Be considerate towards neighbors
at weekends.
N Fewer engines mean less noise.
Where possible, do not run more
than one power tool at any time.
N Operate blowers at the lowest
engine speed necessary to
accomplish the task.
N Inspect your power tool before
starting work, especially the muffler,
air inlets and air filter.
Save water by using a blower instead of
a water hose for lawn and garden work
wherever possible, e.g. for cleaning
yards and patios.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
11
English
Assembling the Blower
Mounting the Blower Tube
5
3
1
N Line up the arrows (1).
N Push the blower tube (2) into the fan
housing stub (3).
N Push the union nut (4) over the fan
housing stub (3) and turn it in the
direction of the arrow until the
tab (5) engages the opening (6).
BG 56, BG 86, SH 56, SH 86
2
8
a
N Push the nozzle (7) onto the blower
tube (2) as far as lug (8),
position (a) (long) or position (b)
(short), and rotate it in the direction
of the arrow to lock in position.
7
b
BG 66
5
1
3
N Line up the arrows (1).
N Push the blower tube (2) into the fan
295BA054 KN
housing stub (3).
N Push the union nut (4) over the fan
housing stub (3) and turn it in the
direction of the arrow until the
tab (5) engages the opening (6).
2
8
N Push the nozzle (7) in position (a)
onto the blower tube (2) as far as
lug (8) and rotate it in the direction
of the arrow to lock in position.
295BA055 KN
Removing the Blower Tube
296BA005 KN
295BA057 KN
N Shut off the engine.
N Insert a suitable tool through the
opening in the union nut to press
down the tab.
N Rotate the union nut in the direction
of the arrow as far as the stop.
N Remove the blower tube.
7
a
296BA004 KN
12
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
Assembling the Vacuum
Shredder
Mounting the Elbow
3
1
2
4
N Push the elbow (1) into the catcher
bag (2) as far as the mark (smaller
arrow).
N Tighten strap (3) on catcher bag
and press down the tab (4).
Make sure the zipper on the
catcher bag is closed.
8
6
5
N Line up the arrows (5).
N Push the elbow into the fan housing
stub (6) as far as stop.
N Push the union nut (7) over the fan
housing stub and turn it in the
direction of the arrow until the
tab (8) engages the opening (9) in
the union nut.
Assembling the Suction Tube
N Line up the arrows on the suction
tube and extension tube. Push
295BA058 KN
together and lock in position.
Mounting the Suction Tube
2
N Shut off the engine.
N Insert screwdriver in the tap (1),
swing it to the right to disengage the
295BA059 KN
intake screen (2) and then open the
intake screen.
3
6
4
295BA061 KN
N Line up the arrows (3).
295BA080 KN
N Push the suction tube into the fan
housing stub (4) as far as stop.
N Push the union nut (5) over the fan
housing stub and turn it in the
direction of the arrow until the
tab (6) engages the opening (7) in
the union nut.
N Continue turning the union nut in
direction of arriw and tighten it down
firmly.
1
Removing the Elbow
295BA060 KN
295BA062 KN
N Shut off the engine.
N Insert a suitable tool through the
opening in the union nut to press
down the tab.
N Rotate the union nut in the direction
of the arrow as far as the stop.
N Removing the Elbow
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
13
English
Removing the Suction Tube.
N Shut off the engine.
N Rotate the union nut in the direction
of the arrow as far as the stop.
N Insert a suitable tool through the
opening in the union nut to press
down the tab.
N Continue turning the union nut in the
direction of the arrow as far as the
next stop.
N Remove the suction tube.
N Close the intake screen and lock it
in position.
Fuel
This engine is certified to operate on
unleaded gasoline and the STIHL twostroke engine oil at a mix ratio of 50:1.
Your engine requires a mixture of highquality gasoline and quality two-stroke
air cooled engine oil.
Use mid-grade unleaded gasoline with a
295BA063 KN
minimum octane rating of 89 (R+M/2). If
the octane rating of the mid-grade
gasoline in your area is lower, use
premium unleaded fuel.
Fuel with a lower octane rating may
increase engine temperatures. This, in
turn, increases the risk of piston seizure
and damage to the engine.
The chemical composition of the fuel is
also important. Some fuel additives not
only detrimentally affect elastomers
(carburetor diaphragms, oil seals, fuel
lines, etc.), but magnesium castings and
catalytic converters as well. This could
cause running problems or even
damage the engine. For this reason
STIHL recommends that you use only
nationally recognized high-quality
unleaded gasoline!
Use only STIHL two-stroke engine oil or
equivalent high-quality two-stroke
engine oils that are designed for use
only in air cooled two-cycle engines.
We recommend STIHL 50:1 two-stroke
engine oil since it is specially formulated
for use in STlHL engines.
Do not use BIA or TCW rated (twostroke water cooled) mix oils or other
mix oils that state they are for use in both
water cooled and air cooled engines
(e.g., outboard motors, snowmobiles,
chain saws, mopeds, etc.).
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapor. When filling at
the pump, first remove the canister from
your vehicle and place the canister on
the ground before filling. Do not fill fuel
canisters that are sitting in or on a
vehicle.
The canister should be kept tightly
closed in order to avoid any moisture
getting into the mixture.
The machine‘s fuel tank and the canister
in which fuel mix is stored should be
cleaned as necessary.
Fuel mix ages
Only mix sufficient fuel for a few days
work, not to exceed 3 months of storage.
Store in approved fuel-canisters only.
When mixing, pour oil into the canister
first, and then add gasoline. Close the
canister and shake it vigorously by hand
to ensure proper mixing of the oil with
the fuel.
Gasoline
Oil (STIHL 50:1 or equivalent high-quality oils)
US gal. US fl.oz
12.6
2 1/2 6.4
5 12.8
Dispose of empty mixing-oil canisters
only at authorized disposal locations.
14
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
Fueling
Before fueling, clean the filler cap and
the area around it to ensure that no dirt
falls into the tank.
Always thoroughly shake the mixture in
the canister before fueling your
machine.
Warning!
After fueling, tighten fuel cap as
securely as possible by hand.
Change the fuel pick up body every
year
295BA064 KN
Before storing your machine for a long
period, drain and clean the fuel tank and
run engine until carburetor is dry.
Starting / Stopping the
Engine
Starting the engine
N Observe safety precautions.
1
295BA066 KN
N Press the fuel pump bulb (1) at least
five times – even if the bulb is filled
with fuel.
Adjusting the setting lever
Only on BG 86, SH 86
295BA065 KN
295BA069 KN
Warning!
In order to reduce the risk of burns or
other personal injury from escaping gas
vapor and fumes, remove the fuel filler
cap carefully so as to allow any pressure build-up in the tank to release
slowly.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
N To start, move the setting lever to
the run position F
The setting lever selects and holds any
throttle position between idle and full
throttle.
15
English
Adjusting the choke knob
If the engine is cold
N Choke-Drehknopf auf g
If the engine is warm
N Choke-Drehknopf auf <
Also use this setting if the engine has
been running but is still cold.
Starting
295BA067 KN295BA068 KN
N Place the unit on the ground:
N Make sure you have a firm footing:
Hold the unit firmly with your right
hand on the housing and press
down.
N Hold the starter grip with your left
hand.
Models with ErgoStart
N Pull the starter grip steadily.
Models without ErgoStart
N Pull the starter grip slowly until you
feel it engage and then give it a brisk
strong pull.
Do not pull out the starter rope all
the way – it might otherwise
break.
N Do not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
Other hints on starting
If the engine stops while the choke
knob in on g or during acceleration
N Move the choke knob to < and
continue cranking until the engine
runs.
If the engine does not start
N Make sure all settings are correct
(choke knob, setting lever in run
position F).
N Repeat the starting procedure.
296BA006 KN
If fuel tank has been run completely
dry and then refueled
1
N Press the fuel pump bulb (1) at least
five times – even if the bulb is filled
with fuel.
N Now start the engine.
295BA066 KN
16
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
As soon as the engine runs
3
N Blip the throttle trigger (3) – the
choke knob moves to the run
position F – the engine returns to
idle speed.
Stopping the Engine.
BG 56, BG 66, SH 56
BG 86, SH 86
295BA071 KN
N Move the setting lever to 0 – the
engine stops – the setting lever
springs back to the on position.
Cleaning the Air Filter
If there is a noticeable loss of engine
power
295BA073 KN
1
2
295BA074 KN
N Turn the filter cover lock (1)
counterclockwise to the vertical
position.
N Remove the filter cover (2).
N Clean away loose dirt from around
the filter.
295BA072 KN
N Move the stop switch to 0 – the
engine stops – the stop switch
springs back to the on position.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
5
3
2
N Pull off the retainer (3) and take the
filter (4) out of the filter housing (5).
N Install a new filter. As a temporary
measure you can knock it out on the
palm of your hand or blow it out with
compressed air – do not wash.
Replace damaged parts.
17
295BA075 KN
English
Installing the filter
N Fit the filter in the filter housing and
push the retainer into position.
N Refit the filter cover and turn the
filter cover lock to the horizontal
position,
Engine Management Adjusting the Carburetor
Exhaust emissions are controlled by the
design of the fundamental engine
parameters and components (e.g.
carburation, ignition, timing and valve or
port timing) without the addition of any
major hardware.
The carburetor comes from the factory
with a standard setting.
This setting provides an optimum fuel-air
mixture under most operating
conditions.
With this carburetor it is only possible to
adjust the high speed screw within fine
limits.
Standard Setting
N Shut off the engine.
N Turn high speed screw (H)
counterclockwise (no more than a
3/4 turn) as far as stop.
N Turn the low speed screw (L)
carefully home as far as stop and
then open it 1 full turn.
295BA076 KN
18
Fine Tuning for Operation in
Mountains or at Sea Level
A slight correction of the setting may be
necessary if engine power is not
satisfactory when operating at high
altitude or at sea level.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
English
N Check the air filter and clean it if
necessary.
N Warm up the engine.
At high altitude
N Turn high speed screw (H)
clockwise (leaner) – no further than
stop.
At sea level
N Turn high speed screw (H) slightly
counterclockwise (richer) – no
further than stop.
Adjusting Idle Speed
It is usually necessary to change the
setting of the idle speed screw (LA) after
every correction to the low speed
screw (L).
Engine stops while idling
N Check the standard setting.
N Turn the idle speed screw (LA)
clockwise until the engine runs
smoothly.
Erratic idling behavior
If acceleration is poor even though the
standard setting is correct, the idle
setting is too rich:
N Turn the low speed screw (L) slowly
clockwise until the engine runs and
accelerates smoothly.
If acceleration is good, the idle setting is
too lean:
N Turn the low speed screw (L) slowly
counterclockwise until the engine
runs and accelerates smoothly.
295BA077 KN
Checking the Spark Plug
000BA002 KN
Wrong fuel mix (too much engine oil in
the gasoline), a dirty air filter and
unfavorable running conditions (mostly
at part throttle etc.) affect the condition
of the spark plug. These factors cause
deposits to form on the insulator nose
which may result in trouble in operation.
If engine is down on power, difficult to
start or runs poorly at idling speed, first
check the spark plug.
N Remove spark plug as described in
chapter "Starting / Stopping the
Engine".
N Clean dirty spark plug.
N Check the electrode gap (A) and
readjust if necessary – see
"Specifications".
N Use only resistor type spark plugs of
the approved range.
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
19
English
Rectify problems which have caused
fouling of spark plug:
– Too much oil in fuel mix.
– Dirty air filter.
– Unfavorable running conditions,
e.g. operating at part load.
Fit a new spark plug after approx. 100
operating hours or earlier if the
electrodes are badly eroded.
2
1
Engine Running Behavior Rewind Starter
If engine running behavior is
unsatisfactory even though the air filter
is clean and the carburetor is properly
adjusted, the cause may be the muffler.
N Have the muffler checked for
contamination (carbonization).
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer.
To help prolong the wear life of the
starter rope, observe the following
points:
N Pull the starter rope only in the
direction specified.
N Do not pull the rope over the edge of
the guide bushing.
N Do not pull out the rope more than
specified.
N Do 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.
To reduce the risk of fire and burn
injury, use only spark plugs
authorized by STIHL. Always
press spark plug boot (2) snugly
onto terminal (1) of the proper
size. (Note: If terminal has
detachable SAE adapter nut, it
must be attached.) A loose
connection between spark plug
boot and ignition wire connector in
the boot may create arcing that
could ignite combustible fumes
and cause a fire.
20
002BA071 KN
BG 56, BG 56 C, BG 66, BG 86, BG 86 C, SH 56, SH 56 C, SH 86, SH 86 C
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