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Stihl MS391 20" Petrol Chainsaw

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Stihl MS391 Chainsaw

Stihl MS391 20″ Petrol Chainsaw

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Category: Lawn & Garden Equipment

Stock Number: ZS-1140 200 0741

Stihl logo

The Stihl MS391 20″ Petrol Chainsaw is an easy-to-manage, high-torque chainsaw for improved performance and user comfort when harvesting wood or sawing firewood. This specific machine has a high torque over a wide range of speeds. This updated chainsaw has up to 20% less fuel consumption and up to 50% lower emissions compared with the previous model without 2-MIX technology.

The Stihl MS391 Petrol Chainsaw has the following features:

  • 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

Instruction is necessary to recognize or assess the dangers of a chainsaw. Please wear protective clothing and equipment.


Free UK home delivery available

If anything is unclear the STIHL MS 391 20″ chainsaw is available for FREE click and collect from any of our five branches.

Technical Data

Bar length 40-50 cm
Bar length 16-20 in
Displacement 64.1 cm³
Tank volume 0.60 l
STIHL Oilomatic saw chain pitch/type 3/8″ RM
Speed at maximum power 9500 rpm
Bumper spike Steel claw
Power output 3.2/4.5 kW/bhp
Sprocket – number of teeth 7,7 Z
Cylinder Chrome
Filter material Flocked,Non-woven fabric
Oil pump Adjustable,Not adjustable
Additional features Ematic chain lubrication system
Filter Cartridge filter,Round cartridge filter
Sprocket Profile sprocket,Sprocket profile
Weight 6.2 kg 1)
Chain tensioning Lateral chain tensioning,Side chain tension
Anti vibration system Standard AV-System
Handle type Standard grip,Standard handle
Exhaust Standard muffler,Standard silencer
Filler cap Tools,WTV tool-free tank cap
Chain pitch 3/8″
Carburettor Compensator / Limiter Caps / scavenging / Carburettor,Flush template / carburettor heating / compensator / limiter caps
EPA Certified fuel consumption 0.47 glh
EPA Certified fuel consumption 1.779 l/h
Power-to-weight ratio 1.9 kg/kW
Oil tank volume 350 cm³
Weight 7.28 / 7.33 / 7.45 / 7.51 / 7.68 kg 2)
Sound pressure level 105 dB(A) 3)
Sound power level 117 dB(A) 3)
Vibration values left/right 4/4 m/s2 4)
STIHL Oilomatic saw chain pitch/type 3/8″
CO² ­ 755 g/kWh


We aim to deliver all Mainland UK orders within 3 – 5 working days of receiving your order.
As soon as the order has been processed all orders that are under 30kgs in weight are dispatched on a next day service with APC couriers.

We offer free delivery for any order to the UK mainland that is over £50 in value and under 30kgs in weight. There are however additional shipping costs for deliveries to Northern Ireland, the Scottish Highlands and Islands, and other remote areas of the UK.

Additional shipping costs for large heavy items that require specialist courier services may also apply. Delivery times will also be slightly longer for heavy items requiring specialist courier services.

For any locations outside Mainland UK including international shipping please contact us at [email protected] for a cost estimate.

For Click & Collect orders please wait until you have been contacted by your selected branch to advise that the order is ready for collection.


We offer a 28 day no quibble returns policy all we ask is that goods must be returned as new, containing all parts and accessories and in their original packaging. Please include a completed returns form with your returned items.

Items must be returned at your own cost, however we will cover the return costs if the goods are faulty or if the wrong item has been delivered.

When returning items to us we cannot be held responsible for goods that go missing in transit so please ensure that you receive proof of postage when returning any goods and have adequate insurance cover. We are able to arrange courier collection if you are returning large heavy items, please contact us at [email protected] for a returns cost estimate. The cost of the return will be deducted from your refund.

See our full Delivery & Returns information

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