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- MS 181 Petrol Chainsaw
MS 181 Petrol Chainsaw
Perfect for cutting firewood and felling small trees
Packed with new technology—at a value price—the STIHL MS 181 chainsaw is designed to reduce vibrations, making it more comfortable to operate. This chainsaw also features reduced-emission engine technology, which lowers fuel consumption as well as emissions; maintaining good cutting speed. Perfect for cutting firewood, for building work and for felling small trees.
Extend your domestic warranty from 2 to 3 years with the purchase of 5 litres of STIHL MotoMix® fuel and this product. Your STIHL Approved Dealer will register your extended warranty on the STIHL warranty database at point of purchase.
Instruction is necessary to recognize or assess the dangers of a chainsaw. Please wear protective clothing and equipment.
If anything is unclear, we recommend to order the chainsaw via Click & Collect and pickup up the chainsaw from a STIHL servicing dealer.
You can find videos showing you how to fill your machine with fuel and oil, fit bars and chains and start your chainsaw here.
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Technical data↓
Technical data Value Displacement cm³ 31.8 Power output kW/bhp 1.5/2 Bar length cm 35-40 Bar length " 14-16 Weight kg 1) 4.3 Weight kg 2) 4.98 / 5.08 Power-to-weight ratio kg/kW 2.9 Sound pressure level dB(A) 3) 100 Sound power level dB(A) 3) 112 Vibration values left/right m/s² 4) 3.5/3 STIHL Oilomatic saw chain pitch/type 3/8" P PM3 STIHL Oilomatic saw chain pitch/type 3/8" P Oil pump Not adjustable Tank volume l 0.27 Chain pitch 3/8" P Chain tensioning Side chain tension Sprocket - number of teeth 6 Filter Long-term filter system / standard filter Filter material Flocked Bumper spike Steel claw Cylinder 4 channel / chrome Oil tank volume cm3 265 Sprocket Sprocket profile Anti vibration system AV System, steel spring Filler cap Tools EPA Certified fuel consumption l/h 0.75 CO2 g/kWh 1,039 Handle type Standard handle Exhaust Standard muffler Carburettor Compensator / Limiter Caps / scavenging / Standard Carburetors Speed at maximum power rpm 10,000 Additional features Ematic chain lubrication system EPA Certified fuel consumption glh 0,198 1) Without fuel, without bar and chain
2) Without fuel, with bar and chain
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
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Features↓
Standard features
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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.
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STIHL 2-MIX-Engine
1-in-4 channel technology. The economical STIHL 2-MIX engine with 1-in-4channel technology features a high torque over a wide speed range. The chainsaw provides fuel savings of up to 20% compared to STIHL two-stroke engines in the same performance class without 2-MIX technology. Exhaust emissions are reduced by up to 50%.
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Anti-vibration system
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.
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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.
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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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Single-lever master control
All important functions such as start, choke, throttle and stop are operated via a single lever.
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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.
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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%.
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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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Cutting Attachments↓
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Rollomatic E
The body is made of 3 electrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability.
Versions Price Rollomatic E, 3/8" P, 1.3 mm, 35 cm / 14" £52.43* Save and compare Save and compare -
Rollomatic E
The body is made of 3 electrically-welded metal plates, the middle plate is extensively hollowed out. Low weight, high stability.
Versions Price Rollomatic E, 3/8" P, 1.3 mm, 40 cm / 16" £54.58* Save and compare Save and compare -
Picco Micro 3 (PM3)
Exclusive to STIHL: 3/8" Picco Micro 3 (PM3) saw chain. This saw chain was specially designed for light, compact chainsaws and ensures less kickback and lower vibration levels. It combines exceptional cutting performance and quality with great user comfort. The 1/4" version features a flat and narrow design as well as the small chain pitch. It is ideal for use with pole pruners. Available with a drive link thickness of 1.1 or 1.3 mm.
Versions Price Picco Micro 3 (PM3) 3/8" P 1.3 mm, 50 drive links, 35 cm / 14" £28.67* Save and compare Save and compare -
Picco Micro 3 (PM3)
Exclusive to STIHL: 3/8" Picco Micro 3 (PM3) saw chain. This saw chain was specially designed for light, compact chainsaws and ensures less kickback and lower vibration levels. It combines exceptional cutting performance and quality with great user comfort. The 1/4" version features a flat and narrow design as well as the small chain pitch. It is ideal for use with pole pruners. Available with a drive link thickness of 1.1 or 1.3 mm.
Versions Price Picco Micro 3 (PM3) 3/8" P 1.3 mm, 55 drive links, 40 cm / 16" £32.10* Save and compare Save and compare
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Accessories↓
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STIHL Smart Connector
STIHL connected is a smart fleet management system that enables professional users to digitally manage machine fleets and work assignments.
This is managed by the STIHL Smart Connector - a sensor with a diameter of just under 5cm, which is mounted on the tool. It can be mounted on petrol, electric or battery-powered tools where it records and saves the operating hours while the motor is running and transmits this information via Bluetooth® 4.2 to the STIHL connected App (the smart connector can be mounted on non-STIHL tools too). The Smart Connector offers entirely new functions and services, as a basis for device management both in your home garden using the STIHL connected App, and for managing your machine fleet using the STIHL connected Portal.
Here’s a few reasons why STIHL connected can help manage your fleet of tools:
- The Digital Fleet Management keeps a record of all tools and their service record
- You get prompts when a tool needs servicing, so you never forget to change the plug, filter or just carry out maintenance
- You can see how many hours a tool has done, so you can plan which tools to use, replace or buy more of
- At the end of the day, you can open the app and see which tools are next to you - so you can tell if something is missing
- Book a service with your nearest STIHL Approved Dealer and give them access to see what work will be needed in advance.
STIHL Connected is an intuitive way to manage your machine fleet and workload intelligently and efficiently. Visit: STIHL connected FAQs to find out more.
Download the app for free or visit the STIHL connected Portal by clicking on the following links:
Length mm 53 Width mm 42 Connectivity Bluetooth 4.2 Height mm 14 Weight g 20 Dimensions (l x b x h) mm 53 x 42 x 14 Signal range m Approx. 10 Running time per battery charge Year Approx. 1 Connectivity Bluetooth low energy 4.2 Battery 3V CR 2,032 Versions Price Smart Connector £21.99* Save and compare Save and compare -
STIHL Smart Connector
STIHL connected is a smart fleet management system that enables professional users to digitally manage machine fleets and work assignments.
This is managed by the STIHL Smart Connector - a sensor with a diameter of just under 5cm, which is mounted on the tool. It can be mounted on petrol, electric or battery-powered tools where it records and saves the operating hours while the motor is running and transmits this information via Bluetooth® 4.2 to the STIHL connected App (the smart connector can be mounted on non-STIHL tools too). The Smart Connector offers entirely new functions and services, as a basis for device management both in your home garden using the STIHL connected App, and for managing your machine fleet using the STIHL connected Portal.
Here’s a few reasons why STIHL connected can help manage your fleet of tools:
- The Digital Fleet Management keeps a record of all tools and their service record
- You get prompts when a tool needs servicing, so you never forget to change the plug, filter or just carry out maintenance
- You can see how many hours a tool has done, so you can plan which tools to use, replace or buy more of
- At the end of the day, you can open the app and see which tools are next to you - so you can tell if something is missing
- Book a service with your nearest STIHL Approved Dealer and give them access to see what work will be needed in advance.
STIHL Connected is an intuitive way to manage your machine fleet and workload intelligently and efficiently. Visit: STIHL connected FAQs to find out more.
Download the app for free or visit the STIHL connected Portal by clicking on the following links:
Length mm 53 Width mm 42 Connectivity Bluetooth 4.2 Height mm 14 Weight g 20 Dimensions (l x b x h) mm 53 x 42 x 14 Signal range m Approx. 10 Running time per battery charge Year Approx. 1 Connectivity Bluetooth low energy 4.2 Battery 3V CR 2,032 Versions Price Smart Connector £21.99* Save and compare Save and compare -
MotoMix
STIHL MotoMix is our patented premixed fuel, specially blended for ultimate performance.
This 50:1 ready-mixed fuel is a combination of premium non-ethanol, high-octane motor fuel for all STIHL 2-stroke engines which gives you optimum performance, excellent cold start properties, maximum acceleration over the entire rpm range and perfect running characteristics even with a sudden rev change.
MotoMix uses STIHL HP ultra-premium oil for exceptional engine lubrication and extreme cleanliness. It’s fully synthetic and biodegradable for optimal performance and long service life. MotoMix is user- and engine-friendly thanks to fewer emissions (free from ethanol; almost no olefins and aromatic compounds).
Can be kept in storage for up to five years.
Did you know:
- For MotoMix drums (55 l & 200 l), speak with your nearest STIHL Approved Dealer about direct delivery of the fuel to your preferred address. Find out more about our MotoMix promotion here.
Patent EP 2031043
Octane number RON >95 Octane rating MOZ 93 Benzene content % Vol. 0.03 Sulphur content mg/kg 3 Shelf life Years up to 5 Density at 15°C kg/m3 690 Olefin content % Vol. 0.1 Vapour pressure at 40 °C kPA 61 Two-stroke oil content % Vol. 1.8 Versions Price MotoMix 5 l £21.99* Save and compare Save and compare -
Wooden sawhorse
Lightweight design. For cutting firewood with ease, max. load 70 kg.
Versions Price Wooden sawhorse £53.50* Save and compare Save and compare -
Chainsaw bag
Made from sturdy nylon. For safe storage and transport of all chainsaws with bar lengths up to 45 cm / 18". With small additional pocket for accessories.
Versions Price Carry bag for chainsaws £41.09* Save and compare Save and compare -
2-in-1 EasyFile
Practical tool for quickly sharpening the teeth and depth gauge in a single action, significantly reducing chain maintenance time. The sturdy frame allows for a smooth filing action with highly accurate results. All the files are easily replaceable. For 1/4" P, 3/8" P, .325", 3/8" and .404" saw chains. Includes round and flat files.
To find out how to sharpen your chain and depth gauge with the EasyFile, click here.
Versions Price 2-in-1 file holder, 1/4" u. 3/8" P ø 4.0 mm £49.22* Save and compare Save and compare -
HP 2-stroke engine oil
Top selling mineral oil two-stroke engine oil. Specially developed for STIHL engines. Excellent lubrication and combustion properties. Performance class: JASO-FB, ISO-L-EGB. Fuel/oil ratio 50:1.
Versions Price HP 2-stroke engine oil - 1 l (for 50 l) metering bottle £17.12* Save and compare Save and compare
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Documents↓
Owners manuals
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Product variations↓
* Manufacturer's recommended retail price updated as of May 2022. The manufacturer's recommended retail prices are subject to change without notice.
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.