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| Model | MS170-14 | MS180-16 | MS250-20 |
| Bar length | 14” / 35cm | 16” / 40cm | 20” |
| Displacement (cm³) | 30.1 | 31.8 | 45.4 |
| Power output (kW/bhp) | 1.2/1.6 | 1.4/1.9 | 2.3/3.1 |
| Weight (Kg) Without fuel, without bar and chain |
4.1 | 4.1 | 4.6 |
| Power-to-weight ratio (kg/Kw) | 3.4 | 3 | 2 |
| Sound pressure level (dB(A)) | 100 | 100 | 99 |
| Sound power level (dB(A)) | 111 | 112 | 111 |
| Vibration level left/right (m/s²) | 5.2/5.5 | 6.6/7.8 | 5.7/6.8 |
| Saw chain pitch | 3/8"P | 3/8"P | 3/8"P |
| STIHL Oilomatic saw chain type | PMM3 | PMM3 | Picco Micro 3 (PM3) |
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STIHL ElastoStartDue 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. |
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STIHL Quick Chain Tensioning (B)With STIHL Quick Chain Tensioning, it's easy to adjust the saw chain, without tools and without coming into contact with the sharp saw chain itself. Just release the sprocket cover and turn the adjusting wheel to set the optimum tension. |
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STIHL 2-MIX engine The two-stroke engine with STIHL 2-MIX technology saves up to 20 % of fuel and reduces emissions by up to 70 % compared to STIHL 2-stroke engines of the same performance class without 2-MIX technology. |
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Carburettor heating (V)By changing the chain saw from summer to winter operation, the intake air is pre-heated over the engine fins. This ensures that the carburettor does not ice up and you can continue working in freezing temperatures. |
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Side-mounted chain tensioningSide-mounted chain tensioning makes it easy to tension the chain safely. |
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Advanced combustion technologyFour 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. |
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CompensatorThis 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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STIHL anti-vibration systemPrecisely calculated buffer zones minimise the transfer of engine and saw chain vibrations to the front and rear handles. The chainsaw therefore runs noticeably smoother. This allows the user to save their strength and work longer. |
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STIHL Ematic SystemCompared 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. |
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Single-lever master controlAll important functions such as start, choke, throttle and stop are operated via a single lever. |
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Tool free fuel capsSpecial caps to open and close the tank cap quickly, easily and without tools. |
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