Bort BBK-2018 - Two-Stroke Oil; Mixing Ratio

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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.