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Technical data
Technical data
K 770, K 770 OilGuard, K 770 Rescue K 770 SmartGuard
Cylinder displacement, cm
3
/cu.in. 74/4.5 74/4.5
Cylinder bore, mm/in. 51/2 51/2
Travel length, mm/in. 36/1.4 36/1.4
Idle speed, rpm 2700 2700
Fully opened throttle, no load, rpm 9300 (+/- 150) 9300 (+/- 150)
Power, kW/hp @rpm 3.7 /5 @9000 3.7 /5 @9000
Spark plug NGK BPMR 7A NGK BPMR 7A
Electrode gap, mm/in. 0.5/0.02 0.5/0.02
Fuel tank capacity, liters/US fl oz 0.9/30 0.9/30
Recommended water pressure, bar/PSI 0.5-10/7-150 0.5-10/7-150
Weight
Power cutter without fuel and cutting blade 300mm
(12in.), kg/Ib*
*Rescue shoulder strap, additional 0.4kg/0.9lb.
10/22 10.8/23.8
Power cutter without fuel and cutting blade 350mm
(14in.) kg/Ib
10.1/22.3 11.1/24.5
Spindle, output shaft
Max. spindle speed with cutting blade 300mm
(12in.), rpm
4700 4700
Max. spindle speed with cutting blade 350mm
(14in.), rpm
4700 4700
Max. peripheral speed, m/s or ft/min (300mm/12in.) 80 or 16000 80 or 16000
Max. peripheral speed, m/s or ft/min (350mm/14in.) 90 or 18000 90 or 18000
Noise emissions
Sound power level, measured dB (A) 113 113
Sound power level, guaranteed L
WA
dB (A)
1
115 115
Equivalent sound pressure level at the ear of the op-
erator, dB (A)
2
101 101
1
Noise emissions in the environment are measured as sound power (L
WA
) in conformity with directive
2000/14/EC. The difference between guaranteed and measured sound power is that the guaranteed sound
power includes dispersion in the measured result and variations between different units of the same product
according to directive 2000/14/EC.
2
Equivalent sound pressure level, according to EN ISO 19432-1, is calculated as the time-weighted energy to-
tal for different sound pressure levels in various working conditions. Reported data for equivalent sound pres-
sure level for the product has a typical statistical dispersion (standard deviation) of 1 dB (A).
34 1447 - 004 - 04.05.2021
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