Bort BBK-2018 User manual

BBK-2018
98296242
User’s Manual ....................................4
 Инструкцияпоэксплуатации .........12

2000
W
2-stroke 2800
min-1
45.0
cm3
0.55
L
0.26
L
1,5mm
0.33"
72pcs
6
kg
SUMMER WINTER

FULL
31 2
OFF
564
Starting
Stopping
1
5
10
15
20
25
Oil - Öl - Масло
Petrol
Benzin
Бензин
1
4%-25 : 1
0,04
0,20
0,40
0,60
0,80
1,00
(40)
(200)
(400)
(600)
(800)
(1000)
(cm3)1

4
Petrol chainsaw
GENERAL SAFETY PRECAUTIONS
Before using a new chain saw please read this manual
carefully.
WARNING! Under no circumstances may the
design of the machine be modied without
the permission of the manufacturer. Always
use genuine accessories. Non-authorized modica-
tions and/or accessories can result in serious personal
injury or the death of the operator or others.
WARNING! A chain saw is a dangerous tool if
used carelessly or incorrectly and can cause
serious, even fatal injuries. It is very impor-
tant that you read and understand the contents of this
operator’s manual.
WARNING!Runninganengineinaconned
or badly ventilated area can result in death
due to asphyxiation or carbon monoxide poi-
soning.
PERSONAL PROTECTIVE EQUIPMENT
● Approvedprotectivehelmet
● Hearingprotection
● Protectivegogglesoravisor
● Gloveswithsawprotection
● Trouserswithsawprotection
● Boots with saw protection, steel toe-cap and non-
slip sole
Generally clothes should be close-tting without re-
stricting your freedom of movement.
MACHINE'S SAFETY EQUIPMENT
Thelifespanofthemachinecanbereducedandthe
risk of accidents can increase if machine maintenance
is not carried out correctly and if service and/or repairs
are not carried out professionally. If you need further
information please contact your nearest service work-
shop.
WARNING! Never use a machine with defec-
tive safety components. Safety equipment
must be inspected and
maintained. See instructions under the heading Check-
ing, maintaining and servicing chain saw safety equip-
ment. If your machine does not pass all the checks,
take the saw to a servicing dealer for repair.
CHAIN BRAKE AND FRONT HAND GUARD
Your chain saw is equipped with a chain brake that is
designedtostopthechainifyougeta kickback.The
chain brake reduces the risk of accidents, but only you
can prevent them.
Take care when using your saw and make sure the
kickback zone of the bar never touches any object.
● The chain brake can either be activated manually
(by your left hand) or automatically by the inertia re-
lease mechanism.
● Thebrakeisappliedwhenthe front hand guard is
pushed forwards.
● This movement activates a spring-loaded mecha-
nism that tightens the brake band around the engine
drive system (clutch drum).
● Thefronthandguardisnot designed solely toac-
tivate the chain brake. Another important feature is
that it reduces the risk of your left hand hitting the
chain if you lose grip of the front handle.
● Thechainbrakemustbeengagedwhenthechain
saw is started to prevent the saw chain from rotat-
ing.
● Use the chain brake as a ”parking brake” when
starting and when moving over short distances, to
reduce the risk of moving chain accidentally hitting
your leg or anyone or anything close by.
● Toreleasethechainbrakepullthefronthandguard
backwards, towards the front handle.
● Kickback can be very sudden and violent. Most
kickbacks are minor and do not always activate the
chain brake. If this happens you should hold the
chainsawrmlyandnotletgo.
● Thewaythechainbrakeisactivated,eithermanu-
ally or automatically by the inertia release mecha-
nism, depends on the force of the kickback and the
position of the chain saw in relation to the object that
the kickback zone of the bar strikes.
If you get a violent kickback while the kickback zone
of the bar is farthest away from you the chain brake is
designed to be activated by the inertia in the kickback
direction.
VIBRATION DAMPING SYSTEM
Your machine is equipped with a vibration damping
system that is designed to minimize vibration and make
operation easier.
Themachine′svibrationdampingsystemreducesthe
transfer of vibration between the engine unit/cutting
equipmentandthemachine′shandleunit.Thebodyof
the chain saw, including the cutting equipment, is insu-
lated from the handles by vibration damping units.
Cutting hardwoods (most broadleaf trees) creates
more vibration than cutting softwoods (most conifers).
Cutting with cutting equipment that is blunt or faulty
(wrong type or badly sharpened) will increase the vi-
bration level.

5
Bar
Thesmallerthetipradiusthelowerthechanceofkick-
back.
Chain
A chain is made up of a number of links, which are
available in standard and low-kickback versions.
IMPORTANT! No saw chain design elimi-
nates the danger of kickback.
WARNING! Any contact with a rotating saw
chain can cause extremely serious injuries.
SHARPENING YOUR CHAIN AND ADJUST-
ING DEPTH GAUGE SETTING
WARNING! Always wear gloves, when work-
ing with the chain, in order to protect your
hands from injury.
General information on sharpening cutting teeth
● Never use a blunt chain. When the chain is blunt
you have to exert more pressure to force the bar
through the wood and the chips will be very small. If
the chain is very blunt it will produce wood powder
and no chips or shavings.
● A sharp chain eats its way through the wood and
produces long, thick chips or shavings.
● Thecuttingpartofthechainiscalledthecutterand
consists of a cutting tooth and the depth gauge.
 Thecutters cutting depth is determined bythe dif-
ference in height between the two (depth gauge set-
ting).
When you sharpen a cutting tooth there are four impor-
tant factors to remember.
1 Filing angle
2 Cutting angle
3 File position
4Roundlediameter
Itisverydi󰀩culttosharpenachaincorrectlywithoutthe
rightequipment.Werecommendthatyouuseourle
gauge.Thiswillhelpyouobtainthemaximumkickback
reduction and cutting performance from your chain.
WARNING! Departure from the sharpening
instructions considerably increases the risk
of kickback.
● Checkthatthechainiscorrectlytensioned.Aslack
chainwillmovesideways,makingitmoredi󰀩cultto
sharpen correctly.
● Always le cutting teeth from the inside face. Re-
duce the pressure on the return stroke. File all the
teethononesiderst,thenturnthechainsawover
andletheteethontheotherside.
● Filealltheteethtothesamelength.Whenthelength
of the cutting teeth is reduced to 4 mm (0.16") the
chain is worn out and should be replaced.
WARNING!Theriskofkickbackisincreased
if the depth gauge setting is too large!
WARNING! Overexposure to vibration can
lead to circulatory damage or nerve damage
in people who have impaired circulation.
Contact your doctor if you experience symptoms of
overexposure to vibration. Such symptoms include
numbness, loss of feeling, tingling, pricking, pain, loss
ofstrength,changesinskincolourorcondition.These
symptoms normally appear in the ngers, hands or
wrists.Thesesymptomsmaybeincreasedincoldtem-
peratures.
Stop switch
Usethestopswitchtoswitcho󰀨theengine.
Mu󰀪er
Themu󰀪erisdesignedtoreducenoiselevelsandto
direct exhaust fumes away from the user.
WARNING!Theexhaustfumesfromtheen-
gine are hot and may contain sparks which
canstarta re. Never start the machine in-
doors or near combustible material!
CAUTION!Themu󰀪ergetsveryhotduring
andafteruse.Thisalsoappliesduringidling.
Beawareoftherehazard,especiallywhen
workingnearammablesubstancesand/orvapours.
WARNING! Never use a saw without a muf-
er, or with a damaged mu󰀪er. A damaged
mu󰀪ermaysubstantiallyincreasethenoise
levelandtherehazard.Keepreghtingequipment
handy. If a spark arrestor screen is required in your ar-
ea, never use the saw without or with a broken spark
arrestor screen.
CUTTING EQUIPMENT GENERAL RULES
● Onlyusecuttingequipmentrecommendedbyus!
● Keepthechain’scuttingteethproperlysharpened!
● Maintainthecorrectdepthgaugesetting!Followour
instructions and use the recommended depth gauge
clearance.Toolargeaclearanceincreasestherisk
of kickback.
● Keep the chain properly tensioned! If the chain is
slack it is more likely to jump o󰀨 and lead to in-
creased wear on the bar, chain and drive sprocket.
● Keepcuttingequipmentwelllubricatedandproperly
maintained! A poorly lubricated chain is more likely
to break and lead to increased wear on the bar,
chain and drive sprocket.
CUTTING EQUIPMENT DESIGNED
TO REDUCE KICKBACK
Theonlywaytoavoidkickbackistomakesurethatthe
kickback zone of the bar never touches anything.
By using cutting equipment with ”built-in” kickback
reduction and keeping the chain sharp and wellmain-
tainedyoucanreducethee󰀨ectsofkickback.

6
However,thissafetyfeaturerequiresthatyouusethe
right sort of chain oil (if the oil is too thin it will run out
before the fuel), and that you adjust the carburetor as
recommended (a lean mixture may mean that the fuel
lasts longer than the oil) and that you also use the rec-
ommended cutting equipment (a bar that is too long will
use more chain oil).
Checking chain lubrication
● Check the chain lubrication each time you refuel.
See instructions under the heading Lubricating the
bar tip sprocket.
Aim the tip of the bar at a light coloured surface about
20 cm (8 inches) away. After 1 minute running at 3/4
throttle you should see a distinct line of oil on the light
surface.
If the chain lubrication is not working:
● Checkthattheoilchannelinthebarisnotobstruct-
ed.
Clean if necessary.
● Checkthatthegrooveintheedgeofthebarisclean.
Clean if necessary.
● Checkthatthebartipsprocketturnsfreelyandthat
the lubricating hole in the tip sprocket is not blocked.
Clean and lubricate if necessary.
If the chain lubrication system is still not working after
carrying out the above checks and associated meas-
ures you should contact your service agent.
Chain drive sprocket
TheclutchdrumisttedwithaSpursprocket(thechain
sprocket is welded on the drum).
Regularly check the degree of wear on the drive
sprocket.
Replace if wear is excessive. Replace the drive sprock-
et whenever you replace the chain.
Checking wear on cutting equipment
Check the chain daily for:
● Visiblecracksinrivetsandlinks.
● Whetherthechainissti󰀨.
● Whetherrivetsandlinksarebadlyworn.
Replace the saw chain if it exhibits any of the points
above.
We recommend you compare the existing chain with
a new chain to decide how badly the existing chain is
worn.
When the length of the cutting teeth has worn down to
only 4 mm the chain must be replaced.
Bar
Check regularly:
● Whether there are burrs on the edges of the bar.
Removethesewithaleifnecessary.
● Whether the groove in the bar has become badly
worn.
Replace the bar if necessary.
ADJUSTMENTOF DEPTHGAUGE SETTING
● Thecuttingteethshouldbenewlysharpenedbefore
adjusting the depth gauge setting. We recommend
that you adjust the depth gauge setting every third
time you sharpen the cutting teeth.
NOTE! This recommendation assumes that
the length of the cutting teeth is not reduced
excessively.
● Youwillneedaatleandadepthgaugetool.We
recommend that you use our depth gauge tool to
acheive the correct depth gauge setting and bevel
for the depth gauge.
● Placethedepthgaugetooloverthechain.Detailed
information regarding the use of the depth gauge
tool, will be found on the package for the depth
gaugetool.Usetheatle to le o󰀨thetipofthe
depth gauge that protrudes through the depth gauge
tool.Thedepthgaugesettingiscorrectwhenyouno
longerfeelresistanceasyoudrawthelealongthe
depth gauge tool.
TENSIONING THE CHAIN
WARNING!Aslackchainmayjumpo󰀨and
cause serious or even fatal injury.
WARNING! Always wear approved protective
gloves.Evenanon-movingchaincancause
serious cuts to yourself or persons you bump
into with an exposed chain.
Themoreyouuseachainthelongeritbecomes.Itis
therefore important to adjust the chain regularly to take
up the slack.
Check the chain tension every time you refuel.
NOTE!Anewchainhasa running-inperiod
during which you should check the tension
more frequently.
LUBRICATING CUTTING EQUIPMENT
WARNING!Poorlubricationofcuttingequip-
ment may cause the chain to snap, which
could lead to serious, even fatal injuries.
Chain oil
Chain oil must demonstrate good adhesion to the chain
andalsomaintainitsowcharacteristicsregardlessof
whether it is warm summer or cold winter weather.
Filling with chain oil
● All our chain saws have an automatic chain lubri-
cationsystem.Onsomemodelstheoilowisalso
adjustable.
● The saw chain oil tank and the fuel tank are de-
signed so that the fuel runs out before the saw chain
oil.

7
TWO-STROKE OIL
● Neverusetwo-strokeoilintended forwater-cooled
engines, sometimes referred to as outboard oil (rat-
edTCW).
● Neveruseoilintendedforfour-strokeengines.
MIXING RATIO
Petrol,litre Two-strokeoil,litre
2% (1:50) 3% (1:33)
5 0,10 0,15
10 0,20 0,30
15 0,30 0,45
20 0,40 0,60
MIXING
● Always mix the petrol and oil in a clean container
intended for fuel.
● Alwaysstartbylling halftheamountofthe petrol
tobeused.Thenaddtheentireamountofoil.Mix
(shake) the fuel mixture. Add the remaining amount
of petrol.
● Mix(shake)thefuelmixturethoroughlybeforelling
the machine’s fuel tank.
● Donotmixmorethanonemonth’ssupplyoffuelat
a time.
● Ifthemachineisnotusedforsometimethefueltank
should be emptied and cleaned.
Chain oil
● Werecommendtheuseofspecialoil(chainoil)with
good adhesion characteristics.
● Neverusewasteoil.Thisresultsindamagetotheoil
pump, the bar and the chain.
● Itisimportanttouseoiloftherightgrade(suitable
viscosity range) to suit the air temperature.
● Intemperaturesbelow0°C(32°F)someoilsbecome
tooviscous.Thiscanoverloadtheoilpumpandre-
sult in damage to the oil pump components.
● Contactyourserviceagentwhenchoosingchainoil.
FUELLING
WARNING!Takingthefollowingprecautions,
willlessentheriskofre:Donotsmokeand
do not place any hot objects in the vicinity of
fuel. Always stop the engine and let it cool for a few
minutes before refuelling. When refuelling, open the
fuel cap slowly so that any excess pressure is released
gently.Tightenthefuelcapcarefullyafterrefuelling.
Always move the machine away from the refuelling
area before starting.
ASSEMBLY
FITTING THE BAR AND CHAIN
WARNING!Switcho󰀨theenginebeforecar-
rying out any checks or maintenance. The
stop switch automatically returns to the start
position. In order to prevent unintentional starting, the
spark plug cap must be removed from the spark plug
when assembling, checking and/or performing mainte-
nance.
Always wear gloves, when working with the chain, in
order to protect your hands from injury.
Check that the chain brake is in disengaged position by
moving the front hand guard towards the front handle.
Remove the bar nuts and remove the clutch cover
(chainbrake).Takeo󰀨thetransportationring.
Fitthebaroverthebarbolts.Placethebarinitsrear-
mostposition.Placethechainoverthedrivesprocket
locate it in the groove on the bar. Begin on the top edge
of the bar.
Make sure that the edges of the cutting links are facing
forward on the top edge of the bar.
Fit the clutch cover (the chain brake) and locate the
chain adjuster pin in the hole in the bar. Check that
thedrivelinksofthechaintcorrectlyoverthedrive
sprocket and that the chain is correctly located in the
grooveinthebar.Tightenthebarnutsngertight.
Tensionthechainbyturningthechaintensioningscrew
clockwise using the combination spanner. The chain
should be tensioned until it does not sag from the un-
derside of the bar.
Thechainiscorrectlytensionedwhenitdoesnotsag
from the underside of the bar, but can still be turned
easilybyhand.Holdupthebartipandtightenthebar
nuts with the combination spanner.
Whenttinganewchain,thechaintensionhastobe
checked frequently until the chain is run-in. Check the
chain tension regularly. A correctly tensioned chain en-
sures good cutting performance and long life.
FUEL
Note!Themachine isequippedwithatwo-stroke en-
gine and must always be run using a mixture of petrol
and twostroke oil. It is important to accurately measure
the amount of oil to be mixed to ensure that the cor-
rect mixture is obtained. When mixing small amounts
of fuel, even small inaccuracies can drastically a󰀨ect
the ratio of the mixture.
WARNING! Always ensure there is adequate
ventilation when handling fuel.
Petrol
● Usegoodqualityunleadedorleadedpetrol.
● Thelowestrecommendedoctanegradeis92.
● Whenworkingwithcontinuoushighrevs(e.g.limb-
ing) a higher octane is recommended.
Running-in
Avoid running at a too high speed for extended periods
duringtherst10hours.

8
LONG-TERM STORAGE
Emptythefuel/oiltanksinawellventilatedarea.Store
the fuel in approved cans in a safe place. Fit the bar
guard. Clean the machine.
STARTING AND STOPPING
WARNING! Note the following before start-
ing:Thechainbrakemustbeengagedwhen
the chain saw is started to reduce the chance
of contact with the moving chain during starting.
Never start a chain saw unless the bar, chain and all
covers are tted correctly. Otherwise the clutch can
comelooseandcausepersonalinjuries.Placethema-
chine on rm ground. Make sure you have a secure
footing and that the chain cannot touch anything.
Keeppeopleandanimalswellawayfromtheworking
area.
COLD ENGINE
Starting:Thechainbrakemustbeengagedwhenthe
chain saw is started. Activate the brake by moving the
front hand guard forwards.
1.Airpurge:Presstheairpurgerepeatedlyuntilfuel
begins to ll the bulb. The bulb need not be com-
pletelylled.
2.Choke:Pullthebluechoke/fastidleleverouttothe
fullextent(totheFULLCHOKEposition).Whenthe
choke/ fast idle lever is pulled out to the full extent,
the correct throttle setting is set automatically.
 Startthrottle:Thecorrectchoke/startthrottlesetting
is obtained by moving the control to the choke posi-
tion.
Starting
Gripthefronthandlewithyourlefthand.Holdthechain
saw on the ground by placing your right foot through
the rear handle.
3.Pullthestarterhandlewithyourrighthandandpull
out the starter cord slowly until you feel a resistance
(as the starter pawls engage) then pull rmly and
rapidly. Never twist the starter cord around your
hand.
CAUTION!Donotpullthestartercordallthe
way out and do not let go of the starter handle
when the cord is fully extended. This can
damage the machine.
4.Push in the choke control to the ”1/2 choke” set-
tingassoonastheenginereswhichcanbeheard
througha"pu󰀨"sound.
5.Keeponpullingthecordpowerfullyuntiltheengine
starts. Allow engine to warm for thirty seconds, then
squeeze throttle trigger to set normal idle.
As the chain brake is still engaged the speed of the
engine must be set to idling as soon as possible, this
is achieved by quickly pressing the throttle trigger
once.Thispreventsunnecessaryweartotheclutch,
clutch drum and brake band.
Clean the area around the fuel cap. Clean the fuel
andchainoiltanksregularly.Thefuelltermustbere-
placed at least once a year. Contamination in the tanks
causes malfunction.
Make sure the fuel is well mixed by shaking the con-
tainerbeforerefuelling.Thecapacitiesofthechainoil
tank and fuel tank are carefully matched. You should
thereforealwaysllthechainoiltankandfueltankat
the same time.
WARNING! Fuel and fuel vapour are highly
ammable.Takecarewhenhandlingfueland
chainoil.Beawareoftherisksofre,explo-
sion and those associated with inhalation.
FUEL SAFETY
● Never refuel the machine while the engine is run-
ning.
● Makesurethereisplentyofventilationwhenrefuel-
ling or mixing fuel (petrol and 2-stroke oil).
● Movethemachineatleast3mfromtherefuelling
point before starting it.
● Neverstartthemachine:
1 If you have spilt fuel or chain oil on the machine.
Wipe o󰀨 the spillage and allow remaining fuel to
evaporate.
2 If you have spilt fuel on yourself or your clothes,
change your clothes. Wash any part of your body that
has come in contact with fuel. Use soap and water.
3 If the machine is leaking fuel. Check regularly for
leaks from the fuel cap and fuel lines.
WARNING! Never use a machine with visible
damage to the spark plug guard and ignition
cable. A risk of sparking arises, which can
causeare.
TRANSPORT AND STORAGE
● Always store the chain saw and fuel so that there
is no risk of leakages or fumes coming into contact
with sparks or naked ames from electrical equip-
ment, electric motors, relays/switches, boilers and
the like.
● Alwaysstorefuelinanapprovedcontainerdesigned
for that purpose.
● Forlongerperiodsofstorageorfortransportofthe
chain saw, the fuel and chain oil tanks should be
emptied. Ask where you can dispose of waste fuel
and chain oil at your local petrol station.
● Ensurethemachineiscleanedandthatacomplete
service is carried out before long-term storage.
● Thebarguardmustalwaysbettedtothecutting
attachment when the machine is being transported
or in storage, in order to prevent accident contact
withthesharpchain.Evenanon-movingchaincan
cause serious cuts to yourself or persons you bump
into with an exposed chain.
● Securethemachineduringtransport.

9
Basic safety rules
Look around you:
● Toensurethatpeople,animalsorotherthingscan-
nota󰀨ectyourcontrolofthemachine.
● To make sure that none of the above might come
within reach of your saw or be injured by falling
trees.
CAUTION! Follow the instructions above, but
do not use a chain saw in a situation where you
cannot call for help in case of an accident.
Do not use the machine in bad weather, such as dense
fog, heavy rain, strong wind, intense cold, etc.
Working
in bad weather is tiring and often brings added risks,
such as icy ground, unpredictable felling direction, etc.
3Takegreatcarewhenremovingsmallbranchesand
avoid cutting bushes (i.e. cutting many small branches
at the same time). Small branches can be grabbed by
the chain and thrown back at you, causing serious in-
jury.
4 Take great care when cutting a tree that is in ten-
sion. A tree that is in tension may spring back to its
normal position before or after being cut. If you posi-
tion yourself incorrectly or make the cut in the wrong
place the tree may hit you or the machine and cause
you to lose control. Both situations can cause serious
personal injury.
5Beforemovingyourchainsawswitcho󰀨theengine
and lock the chain using the chain brake. Carry the
chain saw with the bar and chain pointing backwards.
Fit a guard to the bar before transporting the chain saw
or carrying it for any distance.
6 When you put the chain saw on the ground, lock the
saw chain using the chain brake and ensure you have
aconstantviewofthemachine.Switchtheengineo󰀨
before leaving your chain saw for any length of time.
WARNING! Sometimes chips get stuck in the
clutch cover causing the chain to jam. Always
stop the engine before cleaning.
GENERAL RULES
1 If you understand what kickback is and how it hap-
pens then you can reduce or eliminate the element of
surprise. By being prepared you reduce the risk.
Kickbackisusuallyquitemild,butitcansometimesbe
very sudden and violent.
2Alwaysholdthechainsawrmlywithyourrighthand
on the rear handle and your left hand on the front han-
dle.Wrapyourngersandthumbsaroundthehandles.
You should use this grip whether you are right-handed
or left-handed. This grip minimises the e󰀨ect of kick-
back and lets you keep the chain saw under control. Do
not let go of the handles!
3 Most kickback accidents happen during limbing.
Make sure you are standing rmly and that there is
nothing in the way that might make you trip or lose your
balance.
Warm engine
Use the same procedure as for starting a cold engine
but without setting the choke control in the choke posi-
tion. Set the throttle to the start position by pulling out
the blue choke control to the choke position and then
pushing it in again.
WARNING! Long term inhalation of the en-
gine’s exhaust fumes, chain oil mist and dust
from sawdust can represent a health risk.
● Neverstart a chain saw unless the bar,chainand
allcoversarettedcorrectly.Seeinstructionsunder
the heading Assembly. Without a bar and chain at-
tached to the chain saw the clutch can come loose
and cause serious injury.
● Thechainbrakeshouldbeactivatedwhenstarting.
See instructions under the heading Start and stop.
Do not drop start. This method is very dangerous
because you may lose control of the saw.
● Neverstartthemachineindoors.Exhaustfumescan
be dangerous if inhaled.
● Observe your surroundings and make sure that
there is no risk of people or animals coming into
contact with the cutting equipment.
● Alwaysholdthesawwithbothhands.Therighthand
should be on the rear handle, and the left hand on
the front handle. All people, whether right or left
handed, should use this grip. Use a rm grip with
thumbs and ngers encircling the chain saw han-
dles.
Stopping
Stop the engine by pressing down the stop button.
WORKING TECHNIQUES
BEFORE USE:
1 Check that the chain brake works correctly and is
not damaged.
2 Check that the rear right hand guard is not dam-
aged.
3 Check that the throttle lockout works correctly and
is not damaged.
4 Check that the stop switch works correctly and is
not damaged.
5 Check that all handles are free from oil.
6 Check that the anti vibration system works and is
not damaged.
7 Checkthatthemu󰀪erissecurelyattachedandnot
damaged.
8 Check that all parts of the chain saw are tightened
correctly and that they are not damaged or miss-
ing.
9 Check that the chain catcher is in place and not
damaged.
10 Check the chain tension.

10
Lack of concentration can lead to kickback if the kick-
back zone of the bar accidentally touches a branch,
nearby tree or some other object.
Havecontrolovertheworkpiece.Ifthepiecesyou
intend to cut are small and light, they can jam in the
sawchainandbethrowntowardsyou.Thisisnotnec-
essarily dangerous in itself, but you may be surprised
and lose control of the saw. Never saw stacked logs or
brancheswithoutrstseparatingthem. Onlysawone
log or one piece at a time. Remove the cut pieces to
keep your working area safe.
4 Never use the chain saw above shoulder height and
try not to cut with the tip of the bar. Never use the chain
saw one-handed!
5 You must have a steady stance in order to have full
control over the chain saw. Never work standing on a
ladder,inatreeorwhereyoudonothavermground
to stand on.
6 Always use a fast cutting speed, i.e. full throttle.
7Takegreatcarewhenyoucutwiththetopedgeofthe
bar, i.e. when cutting from the underside of the object.
Thisisknownascuttingonthepushstroke.Thechain
tries to push the chain saw back towards the user. If the
saw chain is jamming, the saw may be pushed back
at you.
8 Unless the user resists this pushing force there is a
risk that the chain saw will move so far backwards that
only the kickback zone of the bar is in contact with the
tree, which will lead to a kickback.
Cutting with the bottom edge of the bar, i.e. from the
top of the object downwards, is known as cutting on
the pull stroke. In this case the chain saw pulls itself
towards the tree and the front edge of the chain saw
body rests naturally on the trunk when cutting. Cutting
on the pull stroke gives the operator better control over
the chain saw and the position of the kickback zone.
9Followtheinstructionsonsharpeningandmaintain-
ing your bar and chain. When you replace the bar and
chain use only combinations that are recommended by
us.
GENERAL
The user must only carry out the maintenance and
serviceworkdescribedinthisOperator’sManual.More
extensive work must be carried out by an authorised
service workshop.
CARBURETTOR ADJUSTMENT
YourBORTproducthasbeendesignedandmanufac-
turedtospecicationsthatreduceharmfulemissions.
FUNCTION
● Thecarburettorgovernstheengine’sspeedviathe
throttle control. Air and fuel are mixed in the car-
burettor. The air/fuel mixture is adjustable. Correct
adjustment is essential to get the best performance
from the machine.
● The T-screw regulates the throttle setting at idle
speed.IftheT-screwisturnedclockwisethisgives
a higher idle speed; turning it anti-clockwise gives a
lower idle speed.
Basic settings and running in
Thebasiccarburettorsettingsareadjustedduringtest-
ing at the factory. Fine adjustment should be carried
out by a skilled technician.
Rec.idlespeed:SeetheTechnicaldatasection.
FineadjustmentoftheidlespeedT
Adjust the idle speed with the T-screw. If it is neces-
sary to re-adjust, turn the T-screw clockwise while
the engine is running, until the chain starts to rotate.
Then turn anticlockwise until the chain stops. When
the idle speed is correctly adjusted the engine should
run smoothly in every position and the engine speed
should be safely below the speed at which the chain
starts to rotate.
WARNING! Contact your servicing dealer, if
the idle speed setting cannot be adjusted so
that the chain stops. Do not use the chain
saw until it has been properly adjusted or repaired.
MAINTENANCE SCHEDULE
Thefollowingisalistofthemaintenancethatmustbe
performed on the machine. Most of the items are de-
scribed in the Maintenance section.