MS 391 - 20 in. Bar View larger

MS 391 - 20 in. Bar

MS391

New product


Easley - Landscapers Supply of Easley

Greenville - Landscapers Supply of Greenville

Greer - Landscapers Supply of Greer

Simpsonville - Landscapers Supply of Simpsonville

Note: Please call location to verify product availibility.


With an advanced low-emission engine technology, the STIHL MS 391 mid-range chainsaw improves fuel efficiency by up to 20% compared to previous models. The new air filtration system requires fewer filter changes, allowing for longer run times. Improved fuel efficiency and fewer filter changes save you time and money.

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Data sheet

ManufacturerStihl
Model #MS 391
UsageFarm & Ranch
Engine Displacement64.1 cc (3.9 cu. in.)
Engine Power3.3 kW (4.4 bhp)
Power SourceGas
Fuel Capacity600 cc (20.3 oz.)
Powerhead Weight6.2 kg (13.67 Ibs.)
Chain Oil Capacity350 cc (11.8 oz.)
Oilomatic® Chain3/8" RS3
Guide Bar Lengths (Recommended ranges)40 to 50 cm (16" to 20") STIHL ROLLOMATIC®
Bar Length20"

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Built in the USA
Indicates products that are built in the United States from domestic and foreign parts and components.

Reduced-Emission Engine Technology - Caring for Nature 
The STIHL Inc. “Caring for Nature” seal identifies its powered products that are more environmentally conscious, producing zero or low exhaust emissions. STIHL Inc. defines “low exhaust emissions” as being cleaner than EPA and/or CARB exhaust emission standards.

Pre-Separation Air Filtration System 
This time-saving technology boosts the efficiency of the engine’s filter system, doubling the time between air filter cleanings. Air drawn into the engine is first separated via centrifugal force, ejecting the heavier dirt particles before being routed to the air filter. This pre-separation means less dirt to be captured by the air filter, resulting in less frequent cleaning and maintenance.

Anti-Vibration System 
STIHL has developed a system for minimizing the vibration levels of handheld outdoor power equipment. The STIHL anti-vibration system helps reduce operator fatigue and provides a more comfortable working experience.

IntelliCarb™ Compensating Carburetor 
The IntelliCarb™ Compensating Carburetor is designed to automatically adjust the air/fuel ratio when the air filter becomes restricted or partially clogged and maintains the engine’s correct RPM. IntelliCarb™ uses air from the clean side of the air filter to control the diaphragm and flow of fuel. As the air filter becomes dirty and less air is available for the carburetor, the IntelliCarb™ system adjusts the fuel flow to compensate for the decrease in air flow. This is in contrast to typical carburetors that utilize this air from the “dirty” side of the air box.

Side-Access Chain Tensioner 
The side-access chain tensioner makes it much more convenient for the user to adjust the saw chain with a bar wrench as opposed to the typical location of the guide bar adjustment screw.

Toolless fuel and oil caps with retainers
Simply lift the lever and twist the caps to remove or tighten. There‘s no need to use a tool to tighten or loosen.