Operating instructions

Transport
WARNING Fuel hazard
► Empty the tank before transport.
Installation
Fuel
Two-stroke oil
The fuel is petrol with a 2% oil mixture (1 part oil to
50 parts petrol). Always use high quality lead-free
petrol (non-alkylat).
For the best lubricating results use Atlas Copco’s
environmentally friendly two-stroke oil, which has
been specially developed for Atlas Copco’s petrol
engined hammering and rock-drilling machines.
If Atlas Copco’s two-stroke oil is not available, use
a high quality two-stroke oil for air-cooled engines
(not two-stroke oil for outboard engines). Contact
your local Atlas Copco representative for advice on
the correct two-stroke oil.
Mixing the petrol and oil
Always mix the petrol and oil in a clean petrol can.
First add the oil and then the correct amount of petrol.
Then shake the can thoroughly. Shake the can before
every refilling.
NOTICE During long term storage of two-stroke
mixture, the oil and petrol can separate. Never mix
more fuel than you intend to use within two weeks.
Filling
WARNING Fuel hazard
The fuel (petrol and oil) is extremely flammable and
petrol fumes can explode when ignited, causing
serious injury or death.
► Protect your skin from contact with the fuel.
► Never remove the filler cap and never fill the fuel
tank when the machine is hot.
► Never smoke when filling the fuel tank or when
working with the machine or servicing it.
► Avoid spilling fuel and wipe off any fuel spilled on
the machine.
Filling procedure
1. Stop the engine and let it cool down before filling
the tank.
2. The machine must be in the upright position
when filling with fuel.
3. Release the filler cap slowly to let any pressure
escape.
A
4. Never overfill the tank.
5. Make sure that the filler cap is screwed on when
the machine is used.
Insertion tool
CAUTION Hot insertion tool
The tip of the insertion tool can become hot and
sharp when used. Touching it can lead to burns and
cuts.
► Never touch a hot or sharp insertion tool.
► Wait until the insertion tool has cooled down before
carrying out maintenance work.
NOTICE Never cool a hot insertion tool in water, it
can result in brittleness and early failure.
© 2010 Atlas Copco Construction Tools AB | No. 9800 0955 01b | 2010-01-01
Original instructions
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COBRA COMBISafety and operating instructions