Stihl BR 800 User manual

STIHL BR 800, BR 800 X Instruction Manual
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GInstruction Manual
1 - 29
FNotice d’emploi
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Original Instruction ManualPrinted on chlorine-free paper
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© ANDREAS STIHL AG & Co. KG, 2020 0458-490-8221-A. VA1.C20. 0000008216_002_GB
BR 800, BR 800 X
English
1
This instruction manual is protected by copyright. All rights reserved, especially the rights to reproduce, translate and process
with electronic systems.
Contents
Dear Customer,
Thank you for choosing a quality
engineered STIHL product.
It has been built using modern
production techniques and
comprehensive quality assurance.
Every effort has been made to ensure
your satisfaction and trouble-free use of
the product.
Please contact your dealer or our sales
company if you have any queries
concerning this product.
Your
Dr. Nikolas Stihl
Guide to Using this Manual 2
Safety Precautions and Working
Techniques 2
Assembling the Unit 7
Adjusting the Throttle Cable 10
Fitting the Harness 10
Fuel 12
Fueling 13
Winter Operation 13
Information Before You Start 14
Starting / Stopping the Engine 15
Operating Instructions 18
Replacing the Air Filter 18
Engine Management 19
Adjusting the Carburetor 19
Spark Plug 19
Spark Arresting Screen in Muffler 20
Storing the Machine 21
Inspections and Maintenance by
Dealer 21
Maintenance and Care 22
Main Parts 24
Specifications 26
Maintenance and Repairs 26
Disposal 27
STIHL Limited Emission Control
Warranty Statement 27

BR 800, BR 800 X
English
2
Pictograms
The meanings of the pictograms
attached to the machine are explained in
this manual.
Depending on the model concerned, the
following pictograms may be attached to
your machine.
Symbols in text
WARNING
Warning where there is a risk of an
accident or personal injury or serious
damage to property.
NOTICE
Caution where there is a risk of
damaging the machine or its individual
components.
Engineering improvements
STIHL's philosophy is to continually
improve all of its products. For this
reason we may modify the design,
engineering and appearance of our
products periodically.
Therefore, some changes, modifications
and improvements may not be covered
in this manual.
Observe all applicable local safety
regulations, standards and ordinances.
If you have not used this model before:
Have your dealer or other experienced
user show you how it is operated or
attend a special course in its operation.
Minors should never be allowed to use
this product.
Keep bystanders, especially children,
and animals away from the work area.
When the power tool is not in use, put it
in a place where it does not endanger
others. Secure it against unauthorized
use.
The user is responsible for avoiding
injury to third parties or damage to their
property.
Do not lend or rent your power tool
without the instruction manual. Be sure
that anyone using your power tool
understands the information contained
in this manual.
Guide to Using this Manual
Fuel tank; fuel mixture of
gasoline and engine oil
Intake air: Winter
operation
Intake air: Summer
operation
Operate manual fuel
pump
Safety Precautions and
Working Techniques
Special safety precau-
tions must be observed
when working with a
power tool.
It is important that you
read the instruction man-
ual before first use and
keep it in a safe place for
future reference. Non-
observance of the
instruction manual may
result in serious or even
fatal injury.

BR 800, BR 800 X
English
3
The use of noise emitting power tools
may be restricted to certain times by
national or local regulations.
Do not operate your power tool if any of
its components are damaged.
Do not use a pressure washer to clean
your power tool. The solid jet of water
may damage parts of the power tool.
Accessories and replacement parts
Only use parts and accessories that are
explicitly approved for this power tool by
STIHL or are technically identical. If you
have any questions in this respect,
consult a servicing dealer. Use only high
quality parts and accessories in order to
avoid the risk of accidents and damage
to the machine.
STIHL recommends the use of original
STIHL replacement parts and
accessories. They are specifically
designed to match the product and meet
your performance requirements.
Never attempt to modify your machine in
any way since this may increase the risk
of personal injury. STIHL excludes all
liability for personal injury and damage
to property caused while using
unauthorized attachments.
Physical Condition
To operate this power tool you must be
rested, in good physical condition and
mental health.
If you have any condition that might be
aggravated by strenuous work, check
with your doctor before operating a
power tool.
Persons with pacemakers only: The
ignition system of your power tool
produces an electromagnetic field of a
very low intensity. This field may
interfere with some pacemakers. To
reduce health risks, STIHL recommends
that persons with pacemakers consult
their physician and the pacemaker
manufacturer before operating this
power tool.
Do not operate the sprayer if you are
under the influence of any substance
(drugs, alcohol) which might impair
vision, dexterity or judgment.
Intended Use
The blower is designed for blow-
sweeping leaves, grass, paper and
similar materials, e.g. in gardens, sports
stadiums, car parks and driveways. It is
also suitable for blow-sweeping forest
paths.
Do not blow-sweep hazardous
materials.
Do not use the machine for any other
purpose because of the increased risk of
accidents and damage to the machine.
Never attempt to modify the product in
any way since this may result in
accidents or damage to the product.
Clothing and Equipment
Wear proper protective clothing and
equipment.
Wear sturdy shoes with non-slip soles.
WARNING
Wear hearing protection, e.g. earplugs
or ear muffs.
STIHL offers a comprehensive range of
personal protective clothing and
equipment.
Transporting the Power Tool
Always shut off the engine.
Clothing must be sturdy
but allow complete free-
dom of movement. Wear
snug-fitting clothing, an
overall and jacket combi-
nation, do not wear a
work coat.
Avoid clothing with loose
drawstrings, laces and
ribbons, scarves, neck-
ties, jewelry or anything
that could be sucked into
the air intake in the side
and bottom of the
machine. Tie up and con-
fine long hair so that it
cannot be sucked into the
machine.
To reduce the risk of eye
injuries, wear close-fit-
ting safety glasses in
accordance with Euro-
pean Standard EN 166.
Make sure the safety
glasses are a comforta-
ble and snug fit.

BR 800, BR 800 X
English
4
Transporting in a vehicle:
–Properly secure your power tool to
prevent turnover, fuel spillage and
damage.
Fueling
Always shut off the engine before
refueling.
Do not fuel a hot engine – fuel may spill
and cause a fire.
Always remove the power tool from your
back and put it on the ground before
refueling. Fuel the machine only when it
is standing on the ground.
Open the fuel cap carefully to allow any
pressure build-up in the tank to release
slowly and avoid fuel spillage.
Fuel your power tool only in well-
ventilated areas. If you spill fuel, wipe
the machine immediately – if fuel gets on
your clothing, change immediately.
Screw-type fuel cap
This reduces the risk of unit vibrations
causing the fuel cap to loosen or come
off and spill quantities of fuel.
Before Starting
Check that your power tool is properly
assembled and in good condition – refer
to appropriate chapters in the instruction
manual.
–Check the fuel system for leaks,
paying special attention to visible
parts such as the tank cap, hose
connections and the manual fuel
pump (on machines so equipped). If
there are any leaks or damage, do
not start the engine – risk of fire.
Have your machine repaired by a
servicing dealer before using it
again.
–Throttle trigger must move freely
and spring back to the idle position
when released.
–The setting lever must move easily
to STOP or 0
–The blower tubes must be properly
assembled.
–Keep the handles dry and clean –
free from oil and dirt – for safe
control of the power tool.
–Check that the spark plug boot is
secure – a loose boot may cause
arcing that could ignite leaking fuel-
air mixture and cause a fire.
–Never attempt to modify the controls
or the safety devices in any way.
–Check condition of blower housing.
–Check condition of harness straps
and backpack – replace damaged
or worn straps.
A worn blower housing (cracks, nicks,
chips) may result in an increased risk of
injury from thrown foreign objects. If the
blower housing is damaged, consult
your dealer – STIHL recommends you
contact a STIHL servicing dealer.
To reduce the risk of accidents, do not
operate your power tool if it is not in a
safe condition.
For emergencies: Practice quickly
opening the fastener on the waist belt,
loosening the shoulder straps and
setting down the unit.
Start the engine.
Start the engine at least 3 meters from
the fueling spot, outdoors only.
Your power tool is designed to be
operated by one person only. Do not
allow other persons in the work area –
even when starting.
Do not drop start the power tool – start
the engine as described in the
instruction manual.
Place the power tool on level ground,
make sure you have secure footing, hold
the power tool securely.
As soon as the engine starts, the air flow
may throw small objects (e.g. stones) in
your direction.
Gasoline is an extremely
flammable fuel. Keep
clear of naked flames. Do
not spill any fuel – do not
smoke.
Check for leakage. To
reduce the risk of serious
of fatal burn injuries, do
not start or run the engine
until leak is fixed.
After fueling, tighten
down the screw-type fuel
cap as securely as
possible.

BR 800, BR 800 X
English
5
During Operation
In the event of impending danger or in
an emergency, switch off the engine
immediately by moving the setting lever
to STOP or 0.
To reduce the risk of injury from thrown
objects, do not allow any other persons
within 15 meters of your own position.
To reduce the risk of damage to
property, also maintain this distance
from other objects (vehicles, windows).
When blow-sweeping (in open ground
and gardens), watch out for small
animals to avoid harming them.
Never leave a running machine
unattended.
Take special care in slippery conditions
– damp, snow, ice,
on slopes and uneven ground.
Watch out for obstacles: Be careful of
refuse, tree stumps, roots and ditches
which could cause you to trip or stumble.
Never work on a ladder or any other
insecure support.
Be particularly alert and cautious when
wearing hearing protection because
your ability to hear warnings (shouts,
alarms, etc.) is restricted.
Work calmly and carefully – in daylight
conditions and only when visibility is
good. Stay alert so as not to endanger
others.
To reduce the risk of accidents, take a
break in good time to avoid tiredness or
exhaustion.
To reduce the risk of serious or fatal
injury from breathing toxic fumes,
ensure proper ventilation when working
in trenches, hollows or other confined
locations.
To reduce the risk of accidents, stop
work immediately in the event of
nausea, headache, visual disturbances
(e.g. reduced field of vision), problems
with hearing, dizziness, deterioration in
ability to concentrate. Apart from other
possibilities, these symptoms may be
caused by an excessively high
concentration of exhaust gases in the
work area.
To reduce the risk of fire, do not smoke
while operating or standing near your
power tool. Note that combustible fuel
vapor may escape from the fuel system.
If dust levels are very high, always wear
a suitable respirator.
Operate your power tool so that it
produces a minimum of noise and
emissions – do not run the engine
unnecessarily, accelerate the engine
only when working.
After finishing work, put the unit down on
a level, non-flammable surface. To
reduce the risk of fire, do not put it down
near easily combustible materials (e.g.
wood chips, bark, dry grass, fuel).
If your power 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 – see also
"Before Starting Work". Check the fuel
system in particular for leaks and make
sure the safety devices are working
properly. Do not continue operating your
power tool if it is damaged. In case of
doubt, consult your servicing dealer.
Do not direct the air blast
towards bystanders or
animals since the air flow
can blow small objects at
great speed – risk of
injury.
Your power tool produces
toxic exhaust fumes as
soon as the engine is
running. These fumes
may be colorless and
odorless and contain
unburned hydrocarbons
and benzol. Never run
the engine indoors or in
poorly ventilated loca-
tions, even if your model
is equipped with a cata-
lytic converter.

BR 800, BR 800 X
English
6
Using the Blower
The machine is carried as a backpack.
Hold and control the blower tube with
your right hand on the control handle.
Walk slowly forwards as you work –
observe the nozzle outlet at all times –
do not walk backwards – risk of
stumbling.
Always shut off the engine before taking
the machine off your back.
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:
–If necessary, dampen the surface to
be cleaned in order to avoid creating
too much dust.
–Do not blow particles in the direction
of bystanders, in particular in the
direction of children, pets, open
windows or freshly washed
vehicles. Take special care in such
situations.
–Remove the blow-swept debris in
rubbish bins – do not blow it onto the
neighbor's land.
Recommended working technique to
minimize noise:
–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. Observe local
rest periods.
–Operate blowers at the lowest
engine speed necessary to
accomplish the task.
–Check your blower before starting
work. Pay special attention to the
muffler, air intakes and air filter.
Vibrations
Prolonged use of the power tool may
result in vibration-induced circulation
problems in the hands (whitefinger
disease).
No general recommendation can be
given for the length of usage because it
depends on several factors.
The period of usage is prolonged by:
–Keeping your hands warm
–Work breaks
The period of usage is shortened by:
–Any personal tendency to suffer
from poor circulation (symptoms:
frequently cold fingers, itching).
–Low outside temperatures.
–Gripping force (a tight grip hinders
circulation).
Continual and regular users should
monitor closely the condition of their
hands and fingers. If any of the above
symptoms appear (e.g. tingling
sensation in fingers), seek medical
advice.
Maintenance and Repairs
Service the machine regularly. Do not
attempt any maintenance or repair work
not described in the instruction manual.
Have all other work performed by a
servicing dealer.
STIHL recommends that you have
servicing and repair work carried out
exclusively by an authorized STIHL
servicing dealer. STIHL dealers are
0009BA001 KN

BR 800, BR 800 X
English
7
regularly given the opportunity to attend
training courses and are supplied with
the necessary technical information.
Only use high-quality replacement parts
in order to avoid the risk of accidents
and damage to the machine. If you have
any questions in this respect, consult a
servicing dealer.
STIHL recommends the use of genuine
STIHL replacement parts. They are
specifically designed to match your
model and meet your performance
requirements.
To reduce the risk of injury, always shut
off the engine before carrying out any
maintenance or repairs or cleaning the
machine. – Exception: Carburetor and
idle speed adjustments.
Do not turn the engine over on the
starter with the spark plug boot or spark
plug removed since there is otherwise a
risk of fire from uncontained sparking.
Do not service or store your machine
near open flames.
Check the fuel filler cap for leaks at
regular intervals.
Use only a spark plug of the type
approved by STIHL and make sure it is
in good condition – see "Specifications".
Inspect the ignition lead (insulation in
good condition, secure connection).
Check the condition of the muffler.
To reduce the risk of fire and damage to
hearing, do not operate your machine if
the muffler is damaged or missing.
Do not touch a hot muffler since burn
injury will result.
Vibration behavior is influenced by the
condition of the AV elements – check the
AV elements at regular intervals.
Shut off the engine before rectifying
problems.
Maintenance, replacement, or repair of
the emission control devices and
systems may be performed by any
nonroad engine repair establishment or
individual. However, if you make a
warranty claim for a component which
has not been serviced or maintained
properly, STIHL may deny coverage.
For any maintenance please refer to the
maintenance chart and to the warranty
statement near the end of the instruction
manual.
Mounting the Hose Clamps and Pleated
Hose
NPush the hose clamp (1) (with
retainer for throttle cable) onto the
elbow (3) – the positioning marks
must face to the left.
NPush the pleated hose (2) over the
elbow (3).
NPush the hose clamp (1) onto the
pleated hose (2).
NLine up the positioning marks on the
hose clamp (1) and elbow (3) – the
screw lug faces down.
NSecure the hose clamp (1) with the
screw (4).
Assembling the Unit
1
0416BA001 KN
2
3
2
1
4
0416BA002 KN
3

BR 800, BR 800 X
English
8
NPush the hose clamp (5) (without
retainer for throttle cable) onto the
blower tube (6) – the positioning
marks must face to the right.
NPush the blower tube (6) into the
pleated hose (2).
NPush the hose clamp (5) onto the
pleated hose (2).
NLine up the hose clamp (5) and
blower tube (6) – as shown.
NSecure the hose clamp (5) with the
screw (7).
Mounting the Control Handle
NPush the control handle (1) onto the
mount (2) .
NInsert and tighten down the
screws (3) firmly.
NEngage the throttle cable (4) with
sleeve (5) in the retainer (6).
Adjusting the Control Handle
NOpen the clamping lever (3).
NMove the control handle (1) along
the blower tube (2) to the most
comfortable position.
NClose the clamping lever (3).
Mounting the Nozzle (BR 800 C)
NPush the nozzle (1) onto the blower
tube (2) and engage it on the
lugs (3).
0416BA003 KN
56
2
56
2
0416BA004 KN
7
1
3
2
0000-GXX-2045-A1
4
6
5
0416BA008 KN
0416BA007 A1
1
2
3
3
0416BA005 KN
1
2

BR 800, BR 800 X
English
9
Mounting the Nozzle (BR 800 C)
NRotate the nozzle (1) in the direction
of the arrow until the lugs (3) are
covered.
NPull the nozzle (1) off the blower
tube (2).
Mounting the Nozzle (BR 800 X)
NPush the nozzle (1) onto the blower
tube (2) and engage it on the
lugs (3).
NRotate the nozzle (1) in the direction
of arrow as far as the stop.
Removing the Nozzle (BR 800 X)
NRotate the nozzle (1) in the direction
of arrow as far as the stop.
NPull the nozzle (1) off the blower
tube (2).
Adjusting the Blower Tube (BR 800 C)
NLoosen the union nut (1).
NPull the blower tube (2) out to the
required length.
NTighten the union nut (1).
Wear Mark on Nozzle
The front end of the nozzle wears away
due to abrasive ground contact during
operation. The nozzle is subject to
normal wear and tear and must be
replaced when the wear mark is
reached.
Transport Aid
The blower tube can be hooked to the
blower housing for storage and
transport.
NAttach D-ring to the hook on the
blower housing.
WARNING
If the engine is started while the blower
tube is still on the hook, air or dirt
particles can be blown into the user’s
face and eyes.
1
3
0416BA006 KN
2
3
1
2
0000-GXX-3989-A0
1
2
0000-GXX-3990-A0
1
0416BA015 KN
2
0416BA009 KN
0000-GXX-5383-A0

BR 800, BR 800 X
English
10
NUnhook the blower tube before
starting the engine.
NOTICE
If clothing or other objects are hung on
the hook, the intake openings may be
covered and cause the engine to
overheat.
NUse the hook only for hanging up
the blower tube for storage or
transport.
NDo not hang clothing or other items
on the hook.
It may be necessary to correct the
adjustment of the throttle cable after
assembling the machine or after a
prolonged period of operation.
Adjust the throttle cable only when the
unit is completely and properly
assembled.
NSet the throttle trigger to the full
throttle position.
NCarefully rotate the screw in the
throttle trigger in the direction of the
arrow until you feel initial resistance.
Then rotate it another half turn in the
same direction.
Adjusting the Harness
APull the ends of the straps
downward to tighten the harness.
BLift the tabs of the adjusters to
loosen the straps.
Adjusting the Throttle Cable
002BA655 KN
Fitting the Harness
A
B
271BA047 KN

BR 800, BR 800 X
English
11
CClose the buckle by pushing the two
parts together.
DSqueeze the hooks to open the
buckle.
Fitting the Harness (BR 800 C)
NPut the blower on your back.
NClose the buckle on the waist
belt (1).
NClose the buckle on the chest
strap (2).
NTighten the straps until the waist
belt fits snugly on your hips and the
back plate is against your back.
Removing the Harness (BR 800 C)
NLoosen the straps.
NOpen the buckles on the chest strap
and waist belt.
NTake the blower off your back.
Fitting the Harness (BR 800 X)
NPut the blower on your back.
NAdjust straps until the back plate is
against your back.
Removing the Harness (BR 800 X)
NLoosen the straps.
NTake the blower off your back.
C
D
271BA048 KN
1
2
0000-GXX-6235-A0

BR 800, BR 800 X
English
12
This engine is certified to operate on
unleaded gasoline and with the mix ratio
50:1.
Your engine requires a mixture of high-
quality premium gasoline and high-
quality two-stroke air-cooled engine oil.
Use premium branded unleaded
gasoline with a minimum octane rating
of 89 (R+M)/2.
Note: Models equipped with a catalytic
converter require unleaded gasoline. A
few tankfuls of leaded gasoline can
reduce the efficiency of the catalytic
converter by more than 50%.
Fuel with a lower octane rating may
result in preignition (causing "pinging")
which is accompanied by an increase in
engine temperature. This, in turn,
increases the risk of the 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 as
well. This could cause running problems
or even damage the engine. For this
reason it is essential that you use only
high-quality fuels!
Fuels with different percentages of
ethanol are being offered. Ethanol can
affect the running behaviour of the
engine and increase the risk of lean
seizure.
Gasoline with an ethanol content of
more than 10% can cause running
problems and major damage in engines
with a manually adjustable carburetor
and should not be used in such engines.
Engines equipped with M-Tronic can be
run on gasoline with an ethanol content
of up to 25% (E25).
Use only STIHL two-stroke engine oil or
equivalent high-quality two-stroke air-
cooled engine oils for mixing.
We recommend STIHL 50:1 two-stroke
engine oil since it is specially formulated
for use in STIHL engines.
To ensure the maximum performance of
your STIHL engine, use a high quality 2-
cycle engine oil. To help your engine run
cleaner and reduce harmful carbon
deposits, STIHL recommends using
STIHL HP Ultra 2-cycle engine oil or ask
your dealer for an equivalent fully
synthetic 2-cycle engine oil.
To meet the requirements of EPA and
CARB we recommend to use STIHL HP
Ultra oil.
Do not use BIA or TCW (two-stroke
water cooled) mix oils!
Use only STIHL 50:1 heavy-duty engine
oil or an equivalent quality two-stroke
engine oil for the fuel mix in models
equipped with a catalytic converter.
Take care when handling gasoline.
Avoid direct contact with the skin and
avoid inhaling fuel vapour.
The canister should be kept tightly
closed in order to avoid any moisture
getting into the mixture.
The fuel tank and the canister in which
fuel mix is stored should be cleaned
from time to time.
Fuel mix ratio
Only mix sufficient fuel for a few days
work, not to exceed 30 days of storage.
Store in approved safety fuel-canisters
only. When mixing, pour oil into the
canister first, and then add gasoline.
Dispose of empty mixing-oil canisters
only at authorized disposal locations.
Fuel
Examples
Gasoline Oil (STIHL 50:1 or equiva-
lent high-quality oils)
liters liters (ml)
1 0.02 (20)
5 0.10 (100)
10 0.20 (200)
15 0.30 (300)
20 0.40 (400)
25 0.50 (500)

BR 800, BR 800 X
English
13
Preparations
NBefore fueling, clean the filler cap
and the area around it to ensure that
no dirt falls into the tank.
Opening screw-type tank cap
NTurn the cap counterclockwise until
it can be removed from the tank
opening.
NRemove the cap.
Filling up with fuel
Take care not to spill fuel while fueling
and do not overfill the tank. STIHL
recommends you use the STIHL filler
nozzle (special accessory).
Closing screw-type tank cap
NPlace the cap in the opening.
NTurn the cap clockwise as far as
stop and tighten it down as firmly as
possible by hand.
At temperatures below +10°C
NLoosen the screws (1).
NRemove the filter cover (2) together
with the air filter (3).
Fueling
452BA123 KN
002BA447 KN
002BA448 KN
Winter Operation
1
2
3
0000-GXX-5388-A0

BR 800, BR 800 X
English
14
NMove the shutter (4) to the right to
position r (winter operation).
NFit the filter cover (2) with air
filter (3) in position.
NInsert the screws (1) and tighten
them down firmly.
At temperatures above +20°C
NMove the shutter (4) to the left to
position s (summer operation).
NOTICE
If the shutter (4) is not moved to
position s at temperatures above
20°C, there is a risk of engine running
problems caused by overheating.
NOTICE
With the engine stopped, check the
following parts before starting and clean
if necessary:
–Base plate
–Intake screen between backplate
and engine
Positions of Setting Lever
1Setting lever
2Throttle trigger
Position “F”
Engine runs or is ready to start. Throttle
trigger (2) can be moved to any position.
Position “†”
Ignition is interrupted, engine stops. The
setting lever (1) is not locked in this
position. It springs back to position “F”.
The ignition is switched on again.
Fixed throttle
The throttle trigger (2) can be locked in
any position.
To disengage the lock:
NReturn the setting lever (1) to
position “F”.
4
0000-GXX-5389-A0
Information Before You Start
2
1
0416BA010 KN
0416BA013 KN
2
1

BR 800, BR 800 X
English
15
Starting the Engine
NObserve safety precautions.
NOTICE
Start your machine on a clean, dust-free
surface only to ensure that no dust is
sucked in.
NMove the setting lever to F
NPress the fuel pump bulb at least 6
times – even if the bulb is already
filled with fuel.
Cold engine (cold start)
NTurn the choke knob to c.
Warm engine (warm start)
NTurn the choke knob to o.
Also use this setting if the engine has
been running but is still cold.
Cranking
NPlace the machine securely on the
ground – make sure that bystanders
are well clear of the nozzle outlet
and
Ntake the blower tube off the hook on
the blower housing (transport
position).
NMake sure you have a firm footing:
Hold the machine with your left hand
on the housing and put one foot
against the base plate to prevent it
slipping.
Starting / Stopping the
Engine
0416BA011 KN
0000-GXX-5390-A0
0000-GXX-5391-A00000-GXX-6223-A0
0000-GXX-5394-A0

BR 800, BR 800 X
English
16
Versions with Easy2Start (BR 800 C)
NPull the starter grip steadily and
quickly with your right hand. Do not
pull out the starter rope to full length
– it might otherwise break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
NContinue cranking until the engine
fires.
Versions without Easy2Start (BR 800 X)
NPull the starter grip slowly with your
right hand until you feel it engage
and then give it a brisk strong pull.
Do not pull out the starter rope to full
length – it might otherwise break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
NContinue cranking until the engine
fires.
When engine begins to fire
If the engine is cold:
NTurn the choke knob to o and
continue cranking until the engine
runs.
If the engine is warm:
NContinue cranking until the engine
runs.
As soon as the engine runs
NBlip the throttle trigger (2) – the
choke knob automatically returns to
F
or
NTurn the choke knob to F.
The engine settles down to idling speed.
At very low outside temperatures
NAllow engine to run in the cold start
position c until it almost stalls.
NIf the engine stalls in the cold start
position c, turn the choke knob to
o and restart the engine.
Stopping the Engine
NPush the setting lever in the
direction of † – the engine stops –
the setting lever then springs back
automatically.
After Short Work Breaks (BR 800 C)
If the blower was running and the engine
shut down, it can be restarted on your
back after short work breaks.
0000-GXX-5392-A0
2
0416BA012 KN
0416BA016 KN

BR 800, BR 800 X
English
17
NMachine is on your back – make
sure that bystanders are well clear
of the nozzle outlet.
NMake sure you have a safe and
secure footing.
NHold blower tube with your right
hand on the control handle.
NPull the starter grip steadily and
quickly with your left hand. Do not
pull out the starter rope to full length
– it might otherwise break.
NDo not let the starter grip snap back.
Guide it slowly back into the housing
so that the starter rope can rewind
properly.
NContinue cranking until the engine
runs.
If Engine Does Not Start
Choke knob
If you did not turn the choke knob to o
quickly enough after the engine began to
fire, the combustion chamber is flooded.
NPush the setting lever (1) upwards.
The throttle trigger (2) is in the full
throttle position.
NContinue cranking until the engine
runs.
Other Hints on Starting
If the engine does not start
NCheck that all settings are correct.
NCheck that there is fuel in the tank
and refuel if necessary.
NCheck that the spark plug boot is
properly connected.
NRepeat the starting procedure.
NCheck adjustment of throttle cable –
see chapter on "Adjusting the
Throttle Cable".
Engine stalls in cold start position c or
under acceleration
NTurn the choke knob to o and
continue cranking until the engine
runs.
Engine does not start in warm start
position o
NMove the choke knob to c and
continue cranking until the engine
runs.
Fuel tank run until completely dry
NAfter refueling, depress the manual
fuel pump bulb at least 6 times –
even if the bulb is already filled with
fuel.
NSet the choke knob according to
engine temperature.
NNow start the engine.
0000-GXX-5395-A0
0416BA013 KN
2
1

BR 800, BR 800 X
English
18
During Operation
After a long period of full throttle
operation, allow the engine to run for a
short while at idle speed so that engine
heat can be dissipated by the flow of
cooling air. This helps protect engine-
mounted components (ignition,
carburetor) from thermal overload.
After Finishing Work
Storing for a short period: Wait for the
engine to cool down. Keep the machine
in a dry place, well away from sources of
ignition, until you need it again. For
longer out-of-service periods – see
"Storing the Machine".
Dirty air filters reduce engine power,
increase fuel consumption and make
starting more difficult.
If There is a Noticeable Loss of Engine
Power
NLoosen the screws (1).
NRemove the filter cover (2) together
with the air filter (3).
NRemove the air filter (3) from the
filter cover.
NReplace a dirty or damaged air filter
(3).
NFit the new air filter (3) in the filter
cover (2).
NFit the filter cover (2) with air
filter (3) in position.
NInsert the screws (1) and tighten
them down firmly.
Operating Instructions Replacing the Air Filter
1
2
3
0000-GXX-5388-A0