Stihl MS 391 Gasoline Chainsaw

Part No.11402000590

Technical details

• Displacement3.9 in³
• Displacement3.9 cu-in
• Power4.4 BHP
• Power4.422 BHP
• Device weight without refuelling13.8 lb1)
• System weight without refuelling16.7 / 17.0 / 18.5 / 16.2 lb2)
• Power-to-weight ratio3.1 lb/hp
• Bar length18 / 20 / 25 / 16 in3)
• Groove width50 / 63 in
• Saw chain pitch3/8"
• Device length with bumper spike18 in1)
• Vibration level left13.1 ft/s²4)
• Vibration level right13.1 ft/s²4)

Hazard Warnings

E-10 Statement

Note: STIHL  recommends use of fuel with no more than 10% Ethanol content. Using fuel  with greater than 10% Ethanol content may cause damage to your equipment and  may void your STIHL warranty.

Proposition 65 - English

This product contains chemicals known to the State of California to cause cancer and reproductive harm. www.P65Warnings.ca.gov

General Power Tool

Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only. Improper use of any power tool may cause serious or fatal injury. Read, understand, and follow carefully the operating and safety instructions in your instruction manual before using such products. STIHL products sold through U.S. STIHL Dealers are for distribution in the United States only.

STIHL is a global leader in high-performance outdoor power equipment. Renowned for manufacturing the world's top-selling chainsaws, STIHL engineers durable, German-designed tools—including trimmers, leaf blowers, hedge trimmers, and advanced battery-powered systems—built for professional landscapers, forestry workers, and demanding homeowners.