Stihl Gas Chainsaw 64cc 14.1lbs MS391

Bar length    40-63 cm
Bar length    16-25 in
Displacement    64 (cc)
Displacement    4 cu-in
Engine power    3.2 kW
Engine power    4.5 bhp
Engine power    4.4 bhp
Weight    6.2 / 13.7 (kg / lbs) 1)
Power-to-weight ratio    1.9 kg/kW
System Weight    7.34 / 7.5 / 7.64 / 7.96 kg 2)
Sound pressure level    106 dB(A) 3)
Vibration level, left    4 m/s² 4)
Vibration level, right    4 m/s² 4)
Saw chain pitch    3/8 "