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Reducing emissions by 50% as compared to previous models, the STIHL MS 261 chain saw's innovative engine technology is less harmful to the environment. The reliable engine also provides up to a 20% increase in fuel efficiency, resulting in longer periods of use between refueling. The compact, space-saving design of the split-barrel carburetor and the stainless steel muffler reduce overall weight, making it ideal for professionals.

This model has several operator-friendly components, including a side-access chain tensioner, toolless fuel and oil caps with retainers, and a translucent fuel tank. Captive bar nuts are retained in the sprocket cover to prevent their loss and are designed for self-guided mounting. Pre-separation air filtration provides greater air cleaning efficiency and longer run times between filter maintenance.

Standard Features:

  • Reduced-emission engine technology results in a 50% reduction in emissions and up to a 20% increase in fuel efficiency, as compared to previous models
  • Self-guided, captive bar nuts on sprocket cover
  • Side-access chain tensioner
  • Compact, reduced-weight split-barrel carburetor
  • Toolless fuel and oil caps
  • Advanced anti-vibration system reduces operator fatigue
  • Decompression valve for easier starts
  • Pre-separation air filtration
  • New round, canister-style air filter
  • Stainless steel muffler
  • View standard features common to many STIHL chain saws


  • DISPLACEMENT: 50.2 cc (3.06 cu in)
  • POWER: 2.8 kW (3.75 bhp)
  • WEIGHT: 5.26 kg (11.6 lbs.)
  • FUEL TANK CAPACITY: 500 cc (16.9 oz)
  • OIL TANK CAPACITY: 270 cc (9.13 oz)
  • GUIDE BAR LENGTHS:(Recommended ranges) 40 to 50 cm (16" to 20") STIHL ROLLOMATIC® 26 RMC3-67 and 16" 3003 008 6813

Common Features

  • TIHL OILOMATIC® Saw Chain STIHL makes its own saw chain.
  • Ematic™ Bar includes a polymer ramp reservoir which holds bar oil until it can be picked up by passing chain. This can reduce oil usage by up to 50%.
  • Bumper Spikes provide better control, making cutting easier.
  • Spark Arrestor Muffler has large baffles which reduce noise level and contain a screen designed to reduce the emission of sparks.
  • STIHL Quickstop® Chain Brake System is designed to stop the chain in fractions of a second. Can be manually activated or activated by inertia, if the kickback force is sufficient.
  • Front Hand Guard is designed to reduce the risk of injury.
  • Front Handle is designed for a secure grip and ergonomically angled for
  • Protected Spark Plug is protected, yet easy to change.
  • Large Starting Handle is easy to grip.
  • Smooth Clean Design has no rough edges to snag on clothing or brush.
  • Air Filter Cover is easy to remove for fast and easy filter cleaning or replacement.
  • Master Control Lever™ is a single lever operating the choke, starting throttle lock and on-off switch.
  • Rear Hand Guard reduces the risk of injury, as well as providing wide area for foot placement during starting.
  • High-Tech Polymer Housings are lightweight, withstand greater impact, and are corrosion-resistant.
  • Translucent Fuel Tank allows operator to easily check fuel level before starting work.
  • Anti-Vibration System helps reduce operator fatigue.
  • Toolless Fuel and Oil Caps require no tools to open or tighten. Cap retainers help keep cap from being lost.

Additional Features

  • IntelliCarb™ Compensating Carburetor measures air on clean side of air filter and adjusts metering diaphragm in carburetor. Keeps RPM levels even when filter begins to clog.
  • Easy-Access Carburetor Adjustment Screws let you adjust the carburetor for local cutting conditions and altitude.
  • Decompression Valve makes starting easier.
  • Easy2Start™ System (E) reduces the strength and effort needed to start the engine. Available on select occasional use models only
  • .

  • Electronic Ignition provides easier starting and smoother running.
  • STIHL Quickstop® Plus Additional Chain Braking Feature (Q) reduces the risk of injury in select circumstances if so equipped.
  • Purge Pump Primer lets you prime the carburetor without flooding it. Standard on select models.
  • Replaceable “In Tank” Fuel and Oil Filters lower cost and are easy to maintain.
  • ElastoStart™ Handle has built-in shock absorber for smoother starting.
  • Inboard Chain Brake requires less maintenance and makes saw chain sprocket easier to remove.
  • Automatic Bar and Chain Oiler lets operator concentrate on cutting, not on bar lubrication.
  • Quick Chain Adjuster (B) is a toolless chain adjuster (Available on select models).
  • Chain Catcher helps reduce the risk of operator contact by a chain if it should break or derail.
  • Throttle Trigger Lockout must be depressed before the trigger can be activated.

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