MS 441 - High power, low vibration 4.1kW-High performance petrol chainsaw

Standard features

Reduced-emission engine technology:

2-stroke engine with stratified charge. During the flushing process a fuel-free layer of air is created between the burned charge in the combustion chamber and the fresh charge in the crankcase. This cushion reduces the amount of fuel lost in flushing discharge during the charge cycle. The result? More power with a lower weight, up to 20% lower fuel consumption than regular 2-stroke engines and significantly reduced exhaust emissions.
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Standard features

Advanced combustion technology:

Four overflow channels swirl the fuel-air mix before ignition, allowing for optimum combustion and highly efficient performance. The result: lower consumption and high torque across a broad rpm range.
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Standard features

Pre-separation air filtration system:

The long-life air filter system with cyclone air routing ensures that 80% of dust particles contained in the sucked in air are caught in the first stage of the system. Unlike traditional systems, these are not collected in the foam filter, but are separated and transported out into the surrounding air. In turn, this provides the elimination of cleaning intervals for the foam pre-filter.
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Standard features

Anti-vibration system:

Intense vibration at the handles of power tools can lead to longer-term effects of blood vessels in the hands and arms. STIHL have therefore developed an effective anti-vibration system where by the oscillations from the machines engine are dampened which significantly reduces vibrations at the handles.
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Standard features

ElastoStart:

STIHL ElastoStart reduces the shock caused by the compression of the engine during starting. The compression shock is taken away from the users joints and muscles through a spring or rubber element in the starter handle.
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Standard features

Tool free filler caps:

Special catches on the fuel and oil tanks for easy opening and locking without the need for tools.
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Standard features

Decompression valve:

The decompression valve is part of the easy start-system. The valve should be pressed before starting in order to reduce the compression pressure when starting, as well as the effort needed to pull the starter rope. The decompression valve is semi-automatic, meaning that it must be pressed manually before starting, but then closes automatically.
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Standard features

Compensator:

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.
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Standard features

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 up to 50%.
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Standard features

Side chain tensioner:

The tensioning screw reachable on the side of chainsaw through the sprocket cover. This removes the need for contact with the sharp saw chain.
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Standard features

Single-lever master control:

All important functions such as start, choke, throttle and stop are operated via a single lever.
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Standard features

Variable-displacement oil pump:

The excact chain oil output can be adjusted maunally for varying conditions, allowing for a reduction of up to 50%.
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Modern, low vibration, high performance saw for forestry and agriculture. Excellent power-to-weight ratio and guide characteristics, very low vibration level and long filter life. the new engine has up to 20% lower consumption and already meets the requirements of the coming EU II and EPA II emissions standards.

Technical data
Displacement 70.7 cm³
Weight 1) 6.6 kg
Power-to-weight ratio 1.6 kg/kW
Power output 4.1/5.6 kW/bhp
Recomm. max. bar length 75 cm
Vibration levels left/right 3.1/3.3 m/s²
Oilomatic saw chain pitch/type 3/8" Rapid Super Comfort
Sound power level 2) 114.0 dB(A)
Sound pressure level 2) 102.0 dB(A)
1) without bar/chain
2) Power factor according to DIR2006/42/EC=2.5(dB(A))
Models available
MS 441, Bar length 16"/40cm
MS 441, Bar length 18"/45cm
MS 441, Bar length 20"/50cm
MS 441, Bar length 25"/63cm
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Standard features

Variations

The version(s) available in each country may differ from the above range and specifications; specific details may be subject to change without notice. Please ask your local STIHL Approved Dealer for further information