Stihl MS 391 18″ Petrol Chainsaw

£815.00 inc VAT

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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.
Instruction is necessary to recognize or assess the dangers of a chainsaw. Please wear protective clothing and equipment.
If anything is unclear, we recommend to order the chainsaw via Click & Collect and pickup up the chainsaw from a STIHL servicing dealer.You can find videos showing you how to fill your machine with fuel and oil, fit bars and chains and start your chainsaw here.Exterior design of STIHL guide bars are subject to change. Technical specifications remain the same.

  • Powerful all-purpose petrol chainsaw for firewood and timber construction
  • Practical decompression valve for efficient starting
  • For work in agriculture, construction, and horticulture
  • Long service intervals due to the long-life air filter system


Bar length45-50 cm
Bar length18-20 in
Displacement64.1 cm³
Capacity3.91 cu-in
Rollomatic E, cutting length40 cm
Tank volume0.60 l
STIHL Oilomatic saw chain pitch/type3/8″ RM
Speed at maximum power9500 rpm
Bumper spikeSteel claw
Power output3.2/4.5 kW/bhp
Filter materialNon-woven fabric
Oil pumpAdjustable
Additional featuresEmatic chain lubrication system
FilterCartridge filter
SprocketProfile sprocket
Weight6.2 kg 1)
Chain tensioningLateral chain tensioning
Anti vibration systemStandard AV-System
Handle typeStandard grip
ExhaustStandard silencer
Filler capWTV tool-free tank cap
Chain pitch3/8″
CarburettorFlush template / carburettor heating / compensator / limiter caps
EPA Certified fuel consumption0.47 glh
EPA Certified fuel consumption1.779 l/h
Power-to-weight ratio1.9 kg/kW
Oil tank volume350 cm³
Weight7.33 / 7.45 kg 2)
Sound pressure level105 dB(A) 3)
Sound power level117 dB(A) 3)
Vibration values left/right4/4 m/s2 4)
STIHL Oilomatic saw chain pitch/type3/8″
CO² ­755 g/kWh