STIHL MS 291 Gas Chainsaw 18-Inch (55.5cc)

The STIHL MS 291 is a mid-range farm and ranch saw built for regular firewood harvesting and general property work in agriculture, construction, and horticulture settings.

A proven 2-MIX engine

The 55.5 cc STIHL 2-MIX engine produces 2.8 kW (3.8 hp) while meeting EU Stage V emissions standards, balancing cutting power with lower fuel use and exhaust output.

Filtered for long working days

A long-life HD2 air filter with pre-separation routes larger debris away before it reaches the filter element, extending the interval between cleanings on dusty jobs.

Steady output as conditions change

A compensator automatically maintains engine performance even as the air filter accumulates contamination, so cutting speed stays consistent through a full day's work.

Comfort for repeat use

STIHL's anti-vibration system isolates the handles from engine and cutting vibration, protecting the operator's hands and joints across long or repeated sessions.

Key features

• 55.5 cc STIHL 2-MIX engine, 3.8 hp
• 18-inch guide bar with 3/8-inch RM3 chain
• Long-life HD2 air filter with pre-separation
• Compensating carburetor
• Anti-vibration system
• Tool-free bayonet fuel caps and side-mounted chain tensioning

Specifications

Frequently asked questions

What fuel mix does the MS 291 take?

It requires a 50:1 mix of unleaded gasoline and STIHL two-stroke oil; pre-mixed STIHL fuel is also compatible and avoids mixing errors.

What kind of work is the MS 291 built for?

STIHL positions it for firewood harvesting plus general agriculture, construction, and horticulture tasks, representing heavier-duty use than a homeowner saw.

Does it meet current emissions standards?

Yes, the 2-MIX engine is built to comply with EU Stage V emissions requirements while maintaining strong cutting performance.

How is chain tension adjusted?

A side-mounted, tool-free tensioning system lets you retighten the chain by hand during a work session.

What is in the box

The MS 291 ships with the powerhead, an 18-inch guide bar and chain installed, a bar scabbard, combination tool, and owner's manual.