MS 500i W Petrol Chainsaw

Standard features

• STIHL Injection (i)

  STIHL injection technology enables the MS 500i to achieve extremely high performance with extraordinarily low displacement and low weight. The saw uses innovative technology to achieve rapid acceleration from 0 to 100 km/h in an unbelievable 0.25 seconds. The powerful saw is ready to use right away. Sensors measure air pressure and internal and external temperature, and pass information on to the control unit. This can use the identified values to determine the optimum fuel quantity and ignition timing.

• Best power-to-weight ratio

  Its revolutionary chainsaw engine technology, and resulting intelligent lightweight construction result in the best power-to-weight ratio on the market. The optimised design – with lightweight sprocket cover, more compact engine unit, flywheel with a low design height, and a reduced-weight crankshaft adapted to the low weight of the flywheel – makes work significantly more comfortable. The MS 500i is ideal for heavy timber felling, cutting into lengths, and pruning.

• Decompression valve

  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.

• Sensor-controlled fuel metering

  In addition to the external temperature sensor, the MS 500i also has a pressure and internal temperature sensor in its engine. This measures the environmental pressure on start-up, and during operation it checks the engine temperature and pressure in the crankcase. The electrical voltage generator delivers the required speed information. The control unit processes these values, meaning that the system adapts to the conditions of use. The fuel is then dosed at the optimum level, quickly resulting in perfect running characteristics.

• Heated handles (W)

  These provide additional comfort in cold weather and can be engaged with a switch on the left handle as required.

• Very easy to start, whether starting from cold or

  The starting process is perfect, with no need for a start position, and easy access to the purger.

• 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.

• HD2 filter with radial seal

  The new HD2 air filter, made from PET material and featuring a radial seal, prevents the intake of fine dust particles. The hermetic seal increases the service life of the engine and reduces wear.

• Captive nuts

  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% 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.

• Plunge guide

  Marking has been added to the fan housing to assist with plunge cuts. This ensures better directional control and safe use of the machine during plunge cutting.

• Optimised bumper spikes

  The tooth length of the bumper spikes has been adjusted to account for the radial contours of trees. The saw bites into wood even better when cutting lengths and felling.

• 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.

• STIHL ElastoStart

  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.

• Tool free filler caps

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

• Optimised sprocket cover

  The flatter, narrower sprocket cover with integrated slide rails reduces effort when pruning and ensures outstanding chip removal.

• STIHL Ematic with new oil pump system

  The new oil pump system allows a higher volume of oil to be delivered. This is especially useful in dusty conditions or when using a long guide bar.

• Service Kit 17

  With Service Kit 17 for STIHL petrol chainsaws you can carry out simple maintenance work on your chainsaw yourself. Regular standard maintenance, such as replacing the air and fuel filters and the spark plug, increases the service life of your chainsaw. And because of this, you yourself can help to ensure that machine components and parts are protected from dirt and damage and that the motor of your chainsaw always works reliably and with optimum performance.

  Service Kit 17 for MS 500i includes the following components for standard maintenance:

  • HD2 air filter
  • Spark plug
  • Fuel filter

  The STIHL HD2 air filter is suitable for all operating conditions and can therefore be used universally. Thanks to its fine pores, it offers a very high filter quality and filters even the finest dirt from the intake air. By replacing the HD2 filter, the chainsaw motor is reliably protected against the ingress of abrasive dust. The performance is retained, the consumption is low and you can continue to start your STIHL chainsaw as easily as usual.

  In order to maintain performance, it is also recommended to replace the spark plug regularly. This is the basis for clean combustion in the engine. The fuel filter keeps the fuel free of foreign particles before it gets into the engine. In this way, it protects the engine and ensures an improved longevity. This must also be replaced regularly in order to function reliably.

  To replace the air filter and spark plug, it is best to use the practical combination wrench that you received with your STIHL chainsaw. A cardboard hook is integrated in the packaging of the service kit itself. This allows you to easily remove and replace the fuel filter. You do not need any additional tools.

  Suitable for 0)	MS 500i

  1) This service kit can only be used with the following machines
  

  Versions	Price
  Service Kit 17	£18.00*	Save and compare
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• 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. With STIHL HP ultra premium oil for exceptional engine lubrication and extreme cleanliness, fully synthetic and biodegradable for optimal performance and long service life. 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. Reliable top performance – STIHL 2-stroke engines and STIHL MotoMix are made for each other; all conceivable applications have been put through rigorous testing.

  Find out more about our MotoMix promotion here.

  
  

  Patent EP 2031043

  
  

  Octane number RON	>95
  Octane rating MOZ	93
  Aromatic content % Vol.	0.1
  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	£20.00*	Save and compare
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• ForestPlus chain oil

  Based on high-quality mineral oils, ForestPlus is suitable for use with all chainsaws, including harvesters. ForestPlus delivers reliable chain lubrication and no resin build up, even during prolonged down times.

  Versions	Price
  ForestPlus chain oil - 5 l	£19.96*	Save and compare
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• HP Ultra 2-stroke engine oil

  Fully synthetic oil with exceptional lubrication properties. Burns with extremely low residue due to ash-free additive. Suitable for continuous use under the most demanding engine conditions. Performance class: JASO-FB, ISO-L-EGB. Fuel/oil ratio 50:1. Recommended for STIHL 4-MIX engines.

  Versions	Price
  HP Ultra 2-stroke oil - 1 l (for 50 l) metering bottle	£27.30*	Save and compare
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• MS 500i Petrol Chainsaw Powerful 5.0 kW chainsaw with electronically controlled fuel injection
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