MS 391 Petrol Chainsaw: Excellent chainsaw for heavy agricultural use
Easy-to-manage, high-torque chainsaw for improved performance and user comfort when harvesting wood or sawing firewood. High torque over a wide range of speeds. Up to 20% less fuel consumption and up to 50% lower emissions compared with the previous model without 2-MIX technology.

Find the correct replacement guide bar and saw chain for your tool with the STIHL bar & chain advisor.

Exterior design of STIHL guide bars are subject to change. Technical specifications remain the same.

Displacement 64.1 cm³
Power 3.30 kW
Engine power 4.50 HP
CO2 653 g/kWh
Device weight without refuelling 6.3 kg 1)
System weight without refuelling 7.38 / 7.51 / 7.43 / 7.55 kg 2)
Power-to-weight ratio 1.90 kg/kW
Bar length 40 / 45 / 50 cm 3)
Bar length 16 / 18 / 20 in 3)
Groove width 1.60 mm
Groove width 63 in
Saw chain pitch 3/8″
Device length with bumper spike 458 mm 1)
Sound pressure level 105 dB(A) 4)
Sound power level 115 dB(A) 4)
Vibration level left 4 m/s² 5)
Vibration level right 4 m/s² 5)