Two-stage speed shifting vortex gearcase

Transmission Type:Automatic Centrifugal

Detachable 2 man handle

Transmission Ratio:31.3:1 

Boring Roting Speed (rpm):180-210rpm 

Boring Rotate Direction:clockwise 

Engine Model:1E50FB 

Displacement (CC):72CC 

Max Power (kw/r/min):3.4kw/7000rpm 

Max Torque (N.m/r/min):2.45 

Starting System:Re-coil 

Cooling System:Air-cool 

Ignition System:C.D.I 

Spark Plug: L7T 

Fuel Mixed Ratio:Gasoline(25):2cycle oil(1) 

Fuel Tank Capacity (L):1.2 

Package Weight:13.6Kgs

Machine carton size:46x41x30cm

Drill Bit Dimension:Height:80cm/100cm 

Diameter: 80,100,150,200,250,300mm