K 770 OilGuard

Ever had engine trouble caused by the wrong oil-fuel mix or oil type? Our unique OilGuard technology will help you prevent the damage from this. An optical detection system guards your machine, and reduces the revs per minute if something is wrong, saving you maintenance costs.

Output power Weight
3.7 kW 10 kg



  • Oilguard
  • Possible to de-activate the OilGuard function
  • Easy and optimal belt tensioning
  • Light and powerful
  • Heavy-duty cutting arm
  • Long service intervals
  • Digital ignition with optimised timing
  • Exceptionally low vibrations
  • Easy to start
  • Maintenance-free air filter
  • High power with less fuel
  • Optimised engine performance
  • Less slurry and low water consumption
  • Easy to change blade guard position
  • Fits multiple blade bushings
  • Less emissions and fuel consumption
  • Blade shaft and bearings
  • Maintenance-free starter
  • Reduced wear
  • Cuts close to walls or ground
  • Active Air Filtration™
  • Anti-vibration system
  • DuraStarter™
  • EasyStart
  • Poly-V belt
  • SmartCarb™
  • Asphalt
  • Blocks, curbstones and pavers
  • Burying of cables
  • Cast concrete
  • Rails
  • Floors and walls
  • Rescue cutting
  • Smooth blade stop

The unique optical detection system prevents engine damage caused by wrong fuel-oil mix or oil type.


Possible to de-activate the OilGuard function

You can use standard two-stroke oil by deactivating the OilGuard function, simply pull out the OilGuard button by the rear handle.

Digital ignition with optimised timing

Provides a powerful spark with optimised timing, enabling easy start and efficient combustion.

Cuts close to walls or ground

Possible thanks to the reversible cutting arm.


Output power 3.7 kW
Max engine/motor 9,300 rpm
Maximum power speed 9,000 rpm
Cylinders 1
Number of strokes 2-stroke engine
Exhaust emissions (CO2 EU V) 711 g/kWh
Power Source Petrol
Cutting Equipment
Cutting depth (max) 125 mm
Blade diameter (max) 350 mm
Arbor diameter 25.4/20 mm
Blade thickness (max) 5 mm
Peripheral speed (max) 90 m/s
Coolant Wet
Weight 10.1 kg
Product size length 605 mm
Product size width 225 mm
Product size height 415 mm
Sound and noise
Sound power level guaranteed (LWA) 115 dB(A)
Sound pressure level at operations ear 101 dB(A)
Vibrations left/front handle 2 m/s²
Vibrations right/rear handle 2.3 m/s²