Original price was: £1,819.00.£1,489.00Current price is: £1,489.00. inc. VAT
Experience the revolution in professional forestry with the STIHL MS 500i, the world’s first chainsaw with electronically controlled fuel injection. Engineered for harvesting large timber, it delivers unprecedented power, rapid acceleration, and an outstanding power-to-weight ratio.
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The STIHL MS 500i marks a significant milestone in professional forestry equipment as the world’s first chainsaw featuring electronically controlled fuel injection. This innovative technology provides the 79.2 cm³ engine with ferocious power (5.0 kW) and astonishingly rapid acceleration. Its lightweight, performance-optimised design results in an impressively low power-to-weight ratio of just 1.24 kg/kW, making it a formidable tool for felling, delimbing, and processing large timber.
Designed for the most demanding professional users, the MS 500i offers a simple start-up sequence and reliable starting behaviour in all conditions. The sensory fuel metering system automatically adapts the fuel mixture to the ambient air pressure and temperature, guaranteeing optimal performance at all times. Its agile handling, similar to the popular MS 462, is enhanced by new bumper spikes and a slim sprocket cover, allowing the saw to be guided with precision close to tree trunks.
STIHL Injection (i): The electronic fuel injection control unit is the brain of the MS 500i. It continuously calculates the perfect fuel quantity and ignition timing, injecting fuel directly into the crankcase. By monitoring air pressure and temperature, it ensures the engine delivers maximum power efficiently, offering more performance from a compact design compared to traditional carburettor engines.
Sensor-Based Fuel Measurement: To maintain optimised running characteristics, integrated pressure and temperature sensors constantly provide data to the control unit. This allows the system to adapt instantly to operating conditions, ensuring the best possible engine behaviour and fuel efficiency.
Simplified Starting: Thanks to the advanced injection system, a traditional start or choke position is no longer necessary. The manual fuel pump is easily accessible, and the decompression valve reduces the force required on the starter cord, making the start-up process effortless.
Operator-Focused Design: The MS 500i is packed with features to make demanding work more manageable. The STIHL anti-vibration system reduces the transmission of engine vibrations to the handles, minimising operator fatigue. Side-mounted chain tensioning provides safe and easy access, while captive nuts on the sprocket cover prevent them from being lost during maintenance. The tool-free fuel and oil caps allow for quick and simple refilling on site.
Efficient Cutting System: The STIHL Ematic system, comprising the guide bar, saw chain, and a controlled-delivery oil pump, ensures lubrication is targeted precisely where it’s needed. This can reduce chain oil consumption by up to 50%. The optimised bumper spikes provide a firm grip on timber, and a plunge guide on the fan housing helps maintain the correct cutting direction.
As a leading STIHL authorised dealer in the UK, Sims Garden Machinery is proud to offer this class-leading professional chainsaw. You can see a wide range of Stihl products at our Stratford-upon-Avon showroom.
Choosing an authorised STIHL dealer like Sims Garden Machinery, with a history stretching back over 100 years, ensures you are purchasing a genuine product with the full manufacturer’s warranty. Our trained sales staff are on hand to offer expert advice, while our on-site workshop is staffed by fully trained mechanics for servicing and support. For local customers, we offer a free Pre-Delivery Inspection (PDI), ensuring your machine is fully built, tested, and ready to use. We also provide local delivery and a comprehensive handover demonstration to ensure you can operate your new chainsaw safely and effectively from day one.
| Displacement | 79.2 cm³ |
| Power Output | 5 kW / 6.8 hp |
| Power-to-weight ratio | 1.24 kg/kW |
| Weight (without fuel, bar and chain) | 6.3 kg |
| System weight (with bar and chain) | 7.57 / 7.88 kg |
| Guide Bar Length | 63 cm / 25″ |
| Saw Chain Pitch | 3/8″ |
| Sound pressure level | 106 dB(A) |
| Sound power level | 117 dB(A) |
| Vibration level left/right | 4.2/4.0 m/s² |
| CO2 | 706 g/kWh |
1) without guide bar and saw chain
2) with guide bar and saw chain
3) The actual cutting length is shorter than the specified bar length
4) K-value according to Directive 2006/42/EC = 2.0 dB(A)
5) K-value according to RL 2006/42/EG = 2 m/s²
We are authorised dealers for leading brands, meaning genuine parts, manufacturer-approved training, and warranty support you can rely on.
No call centres. No ticket systems. Just a knowledgeable local team you can speak to when you need help.
Our team are trained mechanics and product specialists, so you get honest, practical advice based on how you’ll actually use the machine.
We’re a long-standing independent dealer with deep roots in the local area — built on reputation, repeat customers, and word of mouth.
The STIHL MS 500i is specifically engineered for professional users in the forestry, arboriculture, and timber harvesting industries. Its high power output, large bar length, and robust construction make it the ideal tool for felling and processing large-diameter trees and challenging hardwoods.
STIHL’s fuel injection system is revolutionary because it replaces a traditional carburettor with an electronic control unit and sensors. This allows the engine to deliver optimal power and torque regardless of altitude, temperature, or air quality. It results in blistering acceleration, a simplified starting procedure with no choke, and the best power-to-weight ratio on the market.
As a 2-stroke engine, the MS 500i requires a mixture of high-quality unleaded petrol and 2-stroke engine oil. For optimum performance and engine longevity, STIHL recommends using their own HP Ultra 2-stroke oil mixed at a ratio of 50:1 (100ml of oil per 5 litres of petrol).
Yes, the MS 500i is designed to be versatile. While this model is supplied with a 25″ (63cm) guide bar, it is also compatible with other sizes, such as a 20″ (50cm) bar, to suit different applications. Always ensure you are using the correct pitch and gauge of chain to match the bar.
Purchasing from an authorised STIHL dealer like Sims Garden Machinery guarantees you receive a genuine product with a full UK warranty. Our sales staff are trained by STIHL to provide expert advice. Crucially, we are not ‘box-shifters’; we offer comprehensive after-sales support, including servicing and repairs by our own manufacturer-trained mechanics, ensuring your professional investment is well looked after.
| Weight | 8.212 kg |
|---|---|
| Dimensions | 49.4 × 25.5 × 32.3 cm |
| Brand | |
| Engine Size The displacement of the engine in cubic centimetres (cc). |
79.2 |
| Bar Length The length of the guide bar included with the saw. |
50 / 63 cm |
| Chain Gauge The thickness of the chain drive links (e.g., 1.3mm). |
1.6mm |
| Chain Pitch The distance between the chain drive links (e.g., 3/8\" P, .325\"). |
3/8" |
| Power Output (HP) The tool\'s power output measured in horsepower (hp). |
6.8 |
| Power Output (kW) The tool\'s power output measured in kilowatts (kW). |
5.1 |
| Handle Type (Saw) The handle configuration (Rear Handle for ground use, Top Handle for climbing). |
Rear Handle |
| Displacement | 79.2 cm3 |
| Performance | 5/6.8 kW/hp |
| Weight | 6.2 kg 1) |
| Rail length | 50-71 cm |
| Power-to-weight ratio | 1.2 kg/kW |
| System weight (kg) | 7.47 / 7.78 / 7.92 kg 2) |
| Sound pressure level | 106 dB(A) 3) |
| Sound power level | 119 dB(A) 3) |
| Vibration value left/right | 4.2/4 m/s2 4) |
| CO2 | 707 g/kWh |
| Saw chain pitch | 3/8 “ |
As a brand, STIHL's international reputation goes before it and the name is well known and respected by homeowners and gardening professionals alike.
STIHL has created and honed a number of innovations, particularly in the development of its chainsaws, one of its flagship products. STIHL chainsaws are well known and sought after for their power, sturdy construction, durability and user-friendly features!
We offer a free delivery service for all machines within a 30 mile radius. Not only that; we build, inspect and run up every machine prior to delivery. Making sure you get a fully functional machine that is set-up and ready for use. On delivery we will run through with you any instructions & maintenance advice so you are comfortable with your new machine.
Free local delivery and handover
Industry trained sales team
In-house machinery repairs
Family run since 1908
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