Preparing For Work - AL-KO BKS 2625 T Manual De Instrucciones

Assembling the chain saw
Checking the chain tension
1. Check the chain tension. The tension is cor-
rect if the links do not come out of the guide
when you lift the chain in the middle of the bar
(Fig. 7).

PREPARING FOR WORK

Mixture preparation
This machine is equipped with a two-stroke en-
gine that runs on a petrol/oil mixture.
CAUTION!
Using petrol alone will damage the en-
gine and invalidate the warranty.
CAUTION!
Only use high-quality petrol and lubrica-
ting oil so as to ensure overall perfor-
mance and the service life of the mecha-
nical parts in the long term.
Petrol properties
Only lead-free petrol (green petrol) with an octane
number less than 90 RON.
Lead-free petrol tends to leave deposits
in the tank if it is stored for more than 2
months. Always use fresh petrol!
Oil properties
Only use high-quality synthetic oils specifically for
two-stroke engines.
Oils specially developed for such engines are
available from your dealer, which can guarantee
high performance.
Using such oils permits a 2.5% mixture composi-
tion, i.e. 1 part oil to 40 parts petrol.
Mixture preparation and storage
DANGER!
Petrol and mixed fuel are highly in-
flammable!
Exclusively store fuel and mixed fuel
in containers specially approved for
fuels, and keep them in a safe place
away from heat sources and naked
flames.
Never leave the containers within
reach of children.
Do not smoke when mixing fuel, and
attempt to avoid inhaling the petrol
vapours.
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The table shows the amounts of fuel and oil requi-
red for mixture preparation depending on which
oil is used.
Mixing proce-
dure
40 parts petrol: 1
part mixing oil (2-
stroke mixing oil)
For the mixture preparation:
1. Pour about half of the specified quantity of fuel
into an approved canister.
2. Pour in the full volume of oil specified in the
table.
3. Then pour in the remaining petrol.
4. Close the container and shake well.
The mixture is subject to a continuous
ageing process. Do not prepare exces-
sive amounts in order to avoid deposits
forming.
Always store the mixed fuel and petrol
containers separately and identifiably so
as to eliminate any risk of mixing them
up during use.
Regularly clean the petrol and mixture
containers to remove any deposits.
CAUTION!
An excessively lean mixture increases
the risk of a premature piston seizure.
The warranty shall be rendered void if
the instructions on mixing the fuel, etc.,
in this manual are not followed.
Refuelling
DANGER!
RISK OF BURNS AND FIRE
The petrol and petrol vapours are highly
inflammable.
CAUTION!
Always open the tank cap carefully be-
cause pressure may have built up inside.
Petrol Mixing oil
1 litres 25 ml
2 litres 50 ml
4 litres 100 ml
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