The Stihl MS261 C-M chainsaw 16″ has a 50.2cc engine that creates 2.9 kW / 3.9 hp power output and weighs 5.2 kg without the bar and chain.
The Stihl MS261 C-M for the power created is a very light, handy and powerful professional chainsaw. The chainsaw features Stihl M-Tronic – electronic self-tuning engine management system means that the fuel supply is electronically controlled and the machine automatically adapts to operating and ambient conditions, ensuring optimal engine performance every time. If you were to break, the memory function remembers previous operating conditions and allows you to restart quickly after an extended break. Click to see our full range of Stihl chainsaws.
The MS 261 C-M also features an easy-clean HD2 filter, controlled-delivery oil pump and practical features such as a stainless steel muffler, captive nuts on the sprocket cover and monocoque cover with three quick release fasteners. The Stihl 2-MIX technology ensures up to 20 percent less fuel consumption and up to 50 percent emissions reduction compared to the same power STIHL two-stroke engines without 2-MIX technology.
Stihl MS261 C-M specification:
Recommended bar length cm / inch 40 cm / 16″
Displacement cm³ 50.2
Power output kW/bhp 2.9/3.9
Weight 5.2kg without bar and chain
Power-to-weight ratio kg/kW 1.8
Sound pressure level dB(A) 104
Sound power level dB(A) 116
Vibration values left/right m/s² 3.5/3.5
STIHL Oilomatic saw chain pitch/type .325″ RS
Features of the Stihl MS261 C-M Chainsaw:
The decompression valve is part of the easy starting system. The valve should be pressed before starting to reduce the compression pressure when starting, as well as reducing the effort needed to pull the starter rope. The decompression valve is semi-automatic; it must be pressed manually before starting, but then closes automatically.
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.
Reduced-emission engine technology
2-stroke engine with stratified charge. A fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase, reducing the amount of fuel lost during the charge cycle. This results in more power with a lower weight, up to 20 percent lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.
STIHL M-Tronic (M)
This fully electronic engine management system adjusts ignition timing and fuel metering in all operating modes. It also takes external conditions such as temperature, altitude and fuel quality into account. It ensures consistent engine performance, a constant maximum speed and superb acceleration. M-Tronic makes manual carburettor adjustments unnecessary. Thanks to electronic cold/warm start recognition, now there is only one start position on the combi-lever. The engine starts after fewer pulls and with no change of position, and can immediately accelerate up to speed – even after a cold start. M-Tronic also remembers the settings from the last time the tool was used. So when external conditions are the same, optimal engine performance is available every time you start up again.
Advanced combustion technology
Four overflow channels swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result is lower fuel consumption and high torque across a broad rpm range.
The HD2 filter is made from polyethylene filter material with up to 70 percent finer pores than fleece and polyamide filters to trap even very fine dust. In addition, it is oil and water-repellent and thus very easy to clean. The PET-covered filter cartridge with quick-release lock enables the filter to be assembled and disassembled in next to no time, without using tools.
Intense vibration at the handles of power tools can lead to long-term effects on blood vessels in the hands and arms. STIHL has therefore developed an effective anti-vibration system whereby the oscillations from the machine’s engine are dampened which significantly reduces vibrations at the handles.
Pre-separation air filtration system
STIHL long-life air filtration systems with pre-separation achieve perceptibly longer filter life compared with conventional filter systems. Air drawn in is swirled. The larger, heavier particles are ejected. The pre-cleaned air is routed to the air filter via the pre-separator duct.
This controller in the carburettor prevents the fuel-air mixture getting richer as the air filter becomes clogged. The correct quantity of fuel is delivered to the carburettor depending on the quantity of air passing through the air filter. This keeps the fuel/air ratio in the combustion mixture constant and hence also the engine power. The filter doesn’t need to be cleaned until an appreciable drop in power occurs.
When changing the cutting attachment, you will not risk losing the nuts on the sprocket. The MS 261 is the first STIHL chainsaw to be equipped with the captive nuts. A great advantage for all users.
Variable-displacement oil pump
Allows a precise, demand-based delivery of oil. It’s possible to reduce oil production by up to 50 percent in the E position. For very long cutting attachments or very dry wood, an additional volume of oil can be added by the user. similar to illustration.
Side chain tensioner
The tensioning screw can be found on the side of the chain saw through the sprocket cover. This removes the need for contact with the sharp saw chain.
Ematic chain lubrication system
The Ematic chain lubrication system ensures pinpoint lubrication of the saw chain links and guide bar rails. When used with STIHL OILOMATIC saw chain, it will provide maximum lubrication, longer wear and less oil consumption than conventional methods of chain lubrication. The Ematic system can reduce bar oil consumption by up to 50 percent.
STIHL ElastoStart reduces the shock caused by the compression of the engine during starting. The compression shock is taken away from the user’s joints and muscles through a spring or rubber element in the starter handle.
What else will I need to buy with my chainsaw?
- 2-Stroke Oil.
We advise STIHL MotoMix® which is Stihl’s patented premixed fuel, specially blended for ultimate performance. Like a sports drink for your engine, this 50:1 mixture is a combination of premium non-ethanol, high-octane motor fuel and our highest-quality STIHL HP Ultra oil. Clean and convenient, MotoMix® eliminates the hassle of mixing your own 2-stroke engine fuel while providing superior performance and lubrication. STIHL MotoMix® contains no ethanol, allowing it to maintain stability for up to two years after the seal is broken – so it stays fresh in your equipment during long storage periods. MotoMix® is also made of non-aromatic fuel and fully synthetic, highly biodegradable engine oil.
- Chain Oil
Chain lubricant promotes smooth operation by keeping the chain clean and free-running on the guide bar.
- Optional Extras
Chainsaw files, replacement bars and chains, chainsaw safety equipment (PPE) and log saw horses. All available in store at Masseys.
Purchased from Masseys – If your chainsaw was purchased from Masseys and it develops a manufacturing fault during the warranty period, simply return the chainsaw to store and our mechanics will repair the machine free of charge. A warranty repair is when the machine has failed because of improper material or workmanship, under normal use and maintenance.
Purchased online – If you chainsaw was purchased from elsewhere, then we charge an initial £29.99 inspection charge to look at the machine. This will be refunded if the fault is a warranty issue and when the manufacturer has processed and accepted the warranty claim in full. Warranty for non-Masseys customers is 4-12 weeks as we have a duty to ensure our own customers are prioritised first.