Gasoline Model 139F 
 Noise 101dB (A) 
 31cc displacement 
 Fuel tank capacity 0.9L 
 Weight 7.5kg 
 Type single-cylinder gasoline model, air-cooled four-stroke 
 Maximum power 0.7/6500kw/r/min 
 Speed ??9000r/min high stability 
 Contactless Ignition 
 Carburetor Diaphragm 
 Starting Mode Recoil Start 
 Type of hard-axis drive shaft 
 Type strap shoulder strap 
 Gasoline box size 330 × 302 × 300 (mm) 
 Equipment box size 1700 × 128 × 116 (mm) 
 Used is the lightest, most rational design of small four-stroke engine, fuel consumption reduced to two-stroke engine 50% and greatly reduce the use of cost, meet the most stringent emissions standards. 
 Noise level reduced by 50%, work better stability.