Bort BBK-2018 - Sharpening Your Chain and Adjust- Ing Depth Gauge Setting; Cutting Equipment Designed to Reduce Kickback

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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.