STIHL MS 261 C-M Gas Chainsaw (50.2cc) M-Tronic - 18"

The STIHL MS 261 C-M is a professional gas chainsaw that pairs a 50.2cc engine with STIHL's M-Tronic engine management, aimed at arborists and property owners who need consistent, low-maintenance performance for regular limbing, bucking, and felling of small to medium trees.

Self-tuning engine management

The M-Tronic microprocessor continuously monitors and adjusts for changes in elevation, temperature, and fuel quality, keeping the engine running at its optimal setting without manual carburetor tuning.

Good power-to-weight balance

At roughly 10.9 lbs dry weight against 4 bhp of output, the MS 261 C-M is light enough for extended handheld use while still having the power to handle daily professional cutting tasks.

Lower running costs over time

Pre-separation air filtration extends the interval between filter cleanings, and the Ematic lubrication system reduces bar and chain oil consumption by up to 50%, cutting ongoing running costs.

Key features

• 50.2cc gas engine with M-Tronic engine management
• 18" guide bar with 3/8" pitch / .050" gauge chain
• STIHL Ematic bar and chain lubrication system
• Pre-separation air filtration for extended service intervals
• Decompression valve for easier starting
• Full anti-vibration handle system

Specifications

Frequently asked questions

What fuel mix does the MS 261 C-M need?

It requires a two-stroke gasoline/oil mix at the ratio specified in the STIHL owner's manual; using fresh, correctly mixed fuel helps the M-Tronic system tune properly.

How is this different from the MS 362 C-M?

The MS 261 C-M has a smaller 50.2cc engine and lighter build than the 59cc MS 362 C-M, making it a step down in raw power but easier to handle for extended limbing and bucking sessions.

Does the engine need manual tuning?

No. M-Tronic automatically compensates for changing conditions such as elevation, temperature, and fuel quality, removing the need for manual carburetor adjustment.

What is in the box

The MS 261 C-M ships with the powerhead, an 18" guide bar, and 3/8" pitch / .050" gauge saw chain. Fuel and bar oil are not included.