Operating instructions

Technical data
Products
Part numberTool shank size, mm (in.)Description
8313 0800 0822 X 108 (
7
⁄ 8 x 4
1
⁄ 4 )Cobra Combi
Machine data
Cobra Combi
1 cylinder, two-stroke, air cooledType
185Cylinder displacement (cc)
2.0 (2.7)Power kw (hp)
2600–2900Full speed, loaded machine with tamping tool on bed of sand,
crankshaft (strokes/min)
1600–1800Speed, unloaded machine, idling (strokes/min)
Membran type (Walbro)Carburettor
Thyristor type, breakerlessIgnition system
Bosch WR7ACSpark plug (recommended)
1.5 (0.060)Spark plug gap, mm (in.)
MagnapullStarter
Petrol (gasoline), Unleaded (non-alcylat), 90–100 octaneFuel type
1.2 (40.6)Fuel tank capacity, litres (oz)
Atlas Copco two-stroke oil, or Castrol TTS, or recommended two-
stroke oil
Two stroke-oil
2% (1:50)Fuel mixture
1.1–1.4 (0.29–0.37)Fuel consumption, litres/hour (gallon/hour)
732 (28.8)Length, mm (in.)
281 (11)Depth, mm (in.)
585 (23)Width max, mm (in.)
25 (55.1)Weight, kg (lb)
-15 to +37 (5 to 98.6)Ambient temperature C° (F)
Capacities
Cobra Combi
2 (78.7)Max drilling depth m (in.)
250–350Penetration rate with 29 mm drill bit (mm/min)
200–300Penetration rate with 34 mm drill bit (mm/min)
150–200Penetration rate with 40 mm drill bit (mm/min)
Noise and vibration declaration statement
Guaranteed sound power level Lw according to ISO 3744 in accordance with directive 2000/14/EC.
Sound pressure level Lp according to ISO 11203.
Vibration value A and uncertainty B determined according to ISO 20643. See table ”Noise and vibration data”
for the values of A, B, etc.
These declared values were obtained by laboratory type testing in accordance with the stated directive or
standards and are suitable for comparison with the declared values of other tools tested in accordance with
the same directive or standards. These declared values are not suitable for use in risk assessments and values
measured in individual work places may be higher. The actual exposure values and risk of harm experienced
© 2010 Atlas Copco Construction Tools AB | No. 9800 0955 01b | 2010-01-01
Original instructions
20
COBRA COMBISafety and operating instructions