Stihl Gas-Powered Chainsaws, 20in. Bar, 64.1cc, 3/8in. Chain Pitch, Model# MS 391

Estimated delivery dates: May 22, 2026 - May 27, 2026

This high-powered STIHL® MS 391 Gas–Powered Chainsaw with 20in. bar delivers the optimal power-to-weight ratio needed to handle the big jobs in the field or on the farm or ranch. The gas-powered chainsaw is extra fuel efficient while reducing emissions. Its versatile performance is ideal felling cutting firewood, cleanup after a storm and much more.
This item may be purchased at select Northern Tool stores. Not available for online order at NorthernTool.com.

What’s Included

(1) Stihl Chainsaw, 20in. Bar, 64.1cc, 3/8in. Chain Pitch, Model# MS 391

Features + Benefits

Powered by a 4.4 HP, 64.1cc gas engine
Large 20in. bar with 3/8in. chain pitch and 0.050in. chain gauge
Gas powered with easy pull-start design
Anti-vibration system minimizes vibration levels to increase comfort and help reduce user fatigue
IntelliCarb™ compensating carburetor automatically adjusts the air/fuel ratio to maintain proper engine RPMs even when the air filter becomes restricted or partially clogged
Side-access chain tensioner provides easy access allowing for easier chain adjustments with a bar wrench
Reduced emission engine technology produces zero or low exhaust emissions that are cleaner than EPA and/or CARB exhaust emission standards
Pre-separation air filtration system drastically reduces dirt particles that reach the engine air filter, resulting in less frequent air filter cleaning and maintenance
Toolless fuel and oil caps with retainers allow you to simply lift the lever ad twist the caps to remove or tighten, no tools necessary

Attribute	Specification
item#	64357
Brand	Stihl
Manufacture’s Warranty	1 year limited warranty
Ship Weight	15.55 LB
Bar Length	20 in
Engine Displacement	64.1 cc
Chain Pitch	3/8
Chain Gauge	0.05 in
Fuel Capacity	20.3 oz

Attribute	Specification
Power Type	Gas
Horsepower	4.4
Case Included	No
Oil Capacity	11.8 oz
Oil Fuel Mix Ratio	50:1
Low Vibration Handle	Yes
Tool-Less Chain Tensioning	No
Product Weight	13.67 lb