MS 261 C-BM

Great for working in low-density and medium-density stands. Single start position and stop button function mean easy starting. STIHL Quick Chain Tensioning (B) and long-life air filter system with HD2 filter for only occasional cleaning, and captive nuts on the sprocket cover. With a Light 04 guide bar in an innovative design as well as the new .325" RS Pro saw chain for improved cutting performance.

Versions

MS 261 C-BM, Bar length 35cm

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MS 261 C-BM, Bar length 40cm

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Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Technical specifications

Technical specifications	Value
Displacement	50,2 cm³
Power output	3/4,1 kW/PS
Weight ¹⁾	5,1 kg
Power-to-weight ratio	1,7 kg/kW
Saw chain pitch	.325"
Sound pressure level ²⁾	105 dB(A)
Sound power level ³⁾	116 dB(A)
Vibration level left/right ⁴⁾	3,5/3,5 m/s²

1) Without fuel, without bar and chain
2) K-factor according to DIR 2006/42/EC = 2.5 (dB (A))
3) K-factor according to DIR 2006/42/EC = 2.5 dB (A)
4) K-factor according to DIR 2006/42/EC = 2m / s ²

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Standard equipment

STIHL QUICK CHAIN TENSIONING

RE-TENSION THE SAW CHAIN TOOL-FREE. Thanks to STIHL Quick Chain Tensioning, you can tension your saw chain quickly and without tools, thanks to the adjusting wheel. Turning the adjusting wheel to the left releases tension on the saw chain, and turning the adjustment wheel to the right tensions the saw chain. The guide bar will be automatically secured when you tighten the sprocket cover.
CONTROLLED-DELIVERY OIL PUMP

OIL CONSUMPTION BASED ON NEED. The controlled-delivery oil pump reduces your chainsaw’s oil consumption by up to 50%. To use it, simply select the E position. For very long cutting attachments or very dry wood, an additional oil volume can be set by the user.
STIHL 2-MIX ENGINE

HIGHLY POWER-EFFICIENT. With the STIHL 2-MIX engine, you can reduce exhaust emissions and fuel consumption, and therefore operating costs. This 2-stroke engine is low-maintenance and uses fuel efficiently even at high power levels. Use a mixture of petrol and engine oil as fuel. The STIHL 2-MIX engine complies with the strict EU Stage V emissions directive.
HD2-FILTER

INCREASES SERVICE LIFE. The HD2 filter protects your power tool’s engine against even the finest dust, ensuring a longer service life and reduced wear. The filter made from PET material has up to 70% finer pores than fleece and polyamide filters, and is also oil- and water-repellent. This also makes it easier to clean the filter. When needed, the filter cartridge can be easily replaced without tools.
COMBI LEVER WITH STOP FUNCTION

SIMPLIFIED OPERATION. Only one start position is required on the combi lever. Thanks to the stop function, once the machine is turned off the control lever immediately moves back into the operating position. This allows a warm machine to be restarted immediately.
MANUAL DECOMPRESSION

EFFORTLESS START-UP. The decompression valve makes it easier to start your power tool. When starting, you can allow some of the compressed mixture to escape from the cylinder by opening the valve. This protects the start-up system and reduces the amount of force required on the starter cord.
LONG-LIFE AIR FILTER SYSTEM FOR CHAINSAWS

EXTENDED FILTER SERVICE LIFE. Pre-separation routing removes coarse, larger particles from the airstream before they can reach the actual filter. The HD2 filter keeps even fine dust away from the engine, ensuring a long engine service life, long cleaning intervals and easy maintenance of your chainsaw. When we refer to a long-life air filter system in chainsaws, this exclusively describes models that have pre-separation routing and an HD2 filter. With this system, you benefit from a significantly longer filter service life compared to conventional air filter systems.
STIHL ANTI-VIBRATION SYSTEM

FOR MORE PLEASANT WORK. Vibrations can occur when you put your power tools through their paces, and these are particularly noticeable in the grip area. The buffer and spring elements of the STIHL anti-vibration system reduce the transmission of engine vibrations to the handle area and therefore to your body. The result is that your power tool is more comfortable to hold and your work is much less tiring.
COMPENSATOR

REDUCED MAINTENANCE. The compensator is a control system in the carburettor, which uses pressure compensation to ensure that engine performance, exhaust gas quality and fuel consumption remain virtually constant over a long period of time, despite increasing contamination of the air filter. You do not need to clean the air filter until there is a noticeable drop in performance. This means that you can work for a long time without maintenance.
STIHL FOUR-CHANNEL TECHNOLOGY

FOR LOWER FUEL CONSUMPTION AND HIGH PERFORMANCE. Thanks to STIHL four-channel technology, you can work with your power tool with very low fuel consumption and high performance. The four overflow channels guide the fuel-and-air mixture into the cylinder in a targeted and more compressed manner, which optimally burns the fuel and significantly increases the performance of the engine.
CARBURETTOR PRE-HEATING

FOR RELIABLE OPERATION EVEN IN WINTER. Thanks to carburettor preheating, you can work reliably with your chainsaw even in winter. You can change the operation from summer to winter mode in just one simple step. In the winter setting, pre-heated intake air flows around the carburettor, preventing it from icing up.
STIHL ElastoStart

Due to compression pressure, jerky stresses occur when starting internal combustion engines. The damping element in the ElastoStart special starter grip alternately absorbs and releases force according to the compression pattern. The result is smooth, even starting.
Combi lever

As M-Tronic has electronic cold and warm start recognition, only one start position is needed on the combi lever. The exact amount of fuel is supplied on demand. You do not need to know about the status of your chainsaw and can apply full throttle straight away - even with a cold start. Because the saw is warmed up by optimum acceleration in a few seconds.
STIHL M-Tronic (FT)

For a cold start, the STIHL M-Tronic only needs one start position on the combi-lever. After starting, you can immediately power up to full speed. The amount of fuel required is precisely calculated by the system and supplied as needed. Otherwise, start in position I as usual.
Tool free fuel caps

Special caps to open and close the tank cap quickly, easily and without tools.
STIHL Ematic System

Compared to conventional bars without Ematic, the STIHL Ematic system reduces the consumption of chain lubricant by up to 50 %, depending on the type of wood and the cutting attachment used. This system comprises a STIHL Ematic or Ematic S guide bar, a STIHL Oilomatic saw chain and a variable-flow or reduced-flow oil pump. As a result, virtually every drop of chain lubricant is delivered to exactly the right spot.

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Accessories

STIHL Smart Connector

The STIHL Smart Connector forms the basis for using all STIHL connected functions. These functions can be used via both the STIHL connected App and the STIHL connect Portal. Once correctly attached to a STIHL power tool or another manufacturer’s power tool, the STIHL Smart Connector records operational hours while the machine is running, stores them and transmits them to your smartphone via Bluetooth as soon as it is within range. The data received in the STIHL connected App is transferred to the STIHL Cloud when there is an internet connection. The data is stored there in compliance with data protection regulations. The STIHL connected App and STIHL connected Portal allow you to access your power tool data at any time. STIHL connected opens up new avenues for professional users to obtain a convenient and transparent overview of their own power tool fleet. At the same time, STIHL connected provides information including operational hours, power tool status including reminders of overdue maintenance, the last known location, and whether or not the power tools are currently nearby. For professional users, this means improved digital fleet management, more efficient processes within companies, and even closer contact with STIHL dealers. Private users can also use the system to keep an eye on their power tools and carry out maintenance at the right time.

Technical specifications	Value
Dimensions (l x b x h)	53 x 42 x 14 mm
Signal range	ca. 10 m
Running time per battery charge	ca. 1 Year
Connectivity	BLE 4,2
Battery	3V CR 2.032
Weight	20 g

Versions

Smart Connector
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- Multi-function tool
  
  Practical, multi-function quality tool in a sturdy plastic case. 3.5 mm flat-blade screwdriver for carburettor adjustment and cleaning grooves, Torx® TX 27 screwdriver, nylon pouch with belt loop. Width across flats 19-13 for MS 271, MS 291, MS 311 and MS 391, width across flats 19-16 for MS 170, MS 171, MS 180, MS 181, MS 193 C, MS 211, MS 231, MS 241 and MS 251.
Versions
- Multi function tool, size across flats 19 - 13
- Chainsaw bag
  
  For tidy storage and transport of chainsaws with bar lengths up to 45 cm.
Versions
- Carry bag for chainsaws
  Note and compare
- Chainsaw case
  
  For storage and transport of all battery-powered and petrol chainsaws with bar lengths up to 45 cm (not suitable for electric chainsaws and petrol chainsaws MS 441 C-M, MS 461, MS 661 C-M and MS 880).
Versions
- Chainsaw case
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- Holder 1141 for STIHL Laser 2-in-1
  
  For MS 261, MS 271, MS 291, all design variants except VWMS 261, MS 271, MS 291
Versions
- Holder 1141 for STIHL Laser 2-in-1

Deviations from the product range and information provided here are possible, depending on the country. STIHL reserves the right to make changes to technical specifications and equipment.

Owners manuals and safety brochures

Languages	Date	Link
de / fr / it	06.05.2021	Download PDF Download PDF

3.0kW-Petrol chainsaw with STIHL M-Tronic (M) and STIHL Quick Chain Tensioning (B)

General

Versions

Technical specifications

Technical specifications

Features

Standard equipment

STIHL QUICK CHAIN TENSIONING

CONTROLLED-DELIVERY OIL PUMP

STIHL 2-MIX ENGINE

HD2-FILTER

COMBI LEVER WITH STOP FUNCTION

MANUAL DECOMPRESSION

LONG-LIFE AIR FILTER SYSTEM FOR CHAINSAWS

STIHL ANTI-VIBRATION SYSTEM

COMPENSATOR

STIHL FOUR-CHANNEL TECHNOLOGY

CARBURETTOR PRE-HEATING

STIHL ElastoStart

Combi lever

STIHL M-Tronic (FT)

Tool free fuel caps

STIHL Ematic System

Accessories

Accessories

STIHL Smart Connector

Versions

Multi-function tool

Versions

Chainsaw bag

Versions

Chainsaw case

Versions

Holder 1141 for STIHL Laser 2-in-1

Versions

Documents

Owners manuals and safety brochures