Cobra Combi, Safety And Operating Instructions Manual

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Cobra Combi & Standard
© 2005 Atlas Copco Construction Tools AB
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No 9800 0636 90
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2005-09-16
Safety and operating instructions
Technical data
Cobra Combi Cobra Standard
Engine
Type 1 cylinder, two-stroke, air
cooled 1 cylinder, two-stroke, air
cooled
Cylinder displacement 185 cc 185 cc
Speed, crankshaft
(strokes/min) Full speed 2500–2650 r/min
Idling 1600–1800 r/min Full speed 2500–2650 r/min
Idling 1600–1800 r/min
Carburettor Membran type (Walbro) Membran type (Walbro)
Ignition system Thyristor type, breakerless Thyristor type, breakerless
Spark plug (recommended) Bosch WR7AC Bosch WR7AC
Spark plug gap 1.5 mm (0.060 in.) 1.5 mm (0.060 in.)
Starter Magnapull Magnapull
Fuel type Petrol 90–100 octane,
lead-free only Petrol 90–100 octane,
lead-free only
Oil type Atlas Copco two-stroke oil or
recommended two-stroke oil Atlas Copco two-stroke oil or
recommended two-stroke oil
Fuel mixture 2% (1:50) 2% (1:50)
Fuel consumption Approx. 1.1–1.4 litres/hour
(0.29–0.37 US gallons/hour) Approx. 1.1–1.4 litres/hour
(0.29–0.37 US gallons/hour)
Capacities
Max drilling depth 2 m -
Penetration rate with 29 mm drill bit 250–350 mm/min -
Penetration rate with 34 mm drill bit 200–300 mm/min -
Penetration rate with 40 mm drill bit 150–200 mm/min -
Other data
Tool shank H 22x108 mm H 22x108 mm
Machine weight (Fe-cyl) 29.2 kg
(Al-cyl) 25.6 kg 23.4 kg
Service weiht (machine incl. fuel and tools) (Fe-cyl) 31.4 kg
(Al-cyl) 27.8 kg 25.6 kg
Length 732 mm 694 mm
Width, max 470 mm 470 mm
Noice and Vibration Declaration Statement
Sound effect according to EN ISO 3744 in accordance with directive 2000/14/EG
Lp measured, r = 1m dB (A) rel 20 µPa 100 99
Lw guaranteed dB (A) rel 20 µPa 108 107
Vibration according to EN28662-5
Measured vibration value (a m/s
2
) 5.0 5.0
Spread in method and production (ka m/s 2 ) 3.5 3.5
These declared values were obtained by laboratory type testing in compliance with the stated standards and are not
adequate for use in risk assessments. Values measured in individual work places may be higher than the declared
values. The actual exposure values and risk of harm experienced by an individual user are unique and depend upon
the way the user works, the workpiece and work station design, as well as upon the exposure time and the physical
condition of the user. We, Atlas Copco Construction Tools AB, cannot be held liable for the consequences of using
the declared values, instead of values reflecting the actual exposure, in an individual risk assessment in a work place
situation over which we have no control.