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Description

STIHL MS 500i – The World’s First Fuel-Injected Chainsaw With the Best Power-to-Weight Ratio

The STIHL MS 500i is a revolution in professional forestry work. Engineered with STIHL Injection (i) technology, it delivers unmatched acceleration, reaching 0–100 km/h in just 0.25 seconds. With its advanced lightweight design and a market-leading 1.24 kg/kW power-to-weight ratio, the MS 500i is built for felling heavy timber, fast delimbing and precision cutting in the toughest environments.

Designed for forestry professionals who demand maximum performance with minimal effort, this high-torque powerhouse offers rapid throttle response, effortless starting and exceptional cutting strength — even in extreme conditions.


Key Features & Benefits 

STIHL Injection (i) – The Future of Chainsaw Performance

The world’s first chainsaw with electronic fuel injection. Smart sensors monitor temperature, air pressure and engine load to automatically optimise fuel metering and ignition timing, ensuring:

  • Instant acceleration

  • Maximum torque at all times

  • Consistent performance in any climate or altitude


Best-in-Class Power-to-Weight Ratio

The MS 500i sets a new industry standard thanks to:

  • Ultra-light crankshaft

  • Compact engine design

  • Low-profile flywheel

  • Lightweight sprocket cover

The result: significantly less fatigue, more manoeuvrability and outstanding efficiency for large-scale timber harvesting.


Rapid, Reliable Starting

A simplified starting sequence removes the need for a start position. With:

  • Decompression valve

  • Easy-access purger

  • Sensor-controlled fuel metering

…you get effortless hot and cold starts every time.


STIHL 2-MIX Engine – More Power, Less Fuel

The efficient 2-MIX engine with 1-in-4 channel technology offers:

  • Up to 20% fuel savings

  • Up to 50% fewer emissions

  • High torque across the rev range


Advanced Filtration & Engine Protection

HD2 filter with radial seal keeps out fine dust for superior engine protection, longer service life and reduced service intervals.


Designed for Professional Forestry Use

  • Optimised bumper spikes for better bite during felling

  • Plunge guide markings for accurate bore cuts

  • Side chain tensioner for easy, safe adjustments

  • Captive nuts on the sprocket cover (no lost parts)

  • New sprocket cover for cleaner chip ejection and easier manoeuvring

  • STIHL Ematic oiling system with high-output oil pump for long bars or dusty conditions


Comfort & Safety Built In

  • Anti-vibration system reduces long-term strain on hands and arms

  • ElastoStart handle smooths out starting shocks

  • Tool-free filler caps for fast refuelling

  • Lightweight handling for all-day professional use


🌲 Perfect For:

  • Professional forestry & timber harvesting

  • Large tree felling

  • Cutting heavy hardwoods

  • Pruning and cross-cutting large logs

  • Contractors and arborists requiring maximum power

Technical data Value
Displacement cm³ 79.2
Power output kW/bhp 5/6.8
Weight kg 1) 6.2
System weight kg 2) 7.47 / 7.78
Power-to-weight ratio kg/kW 1.2
Sound pressure level dB(A) 3) 106
Sound power level dB(A) 3) 119
Vibration values left/right m/s² 4) 4.2/4
Oil pump Adjustable
Tank volume l 0.78
Chain pitch 3/8″
Chain tensioning Side chain tensioner
Sprocket – number of teeth 7
Filter Cartridge filter HD2
Bumper spike Steel spike
Cylinder 4 channel / chrome
Oil tank volume cm3 325
Sprocket Rim sprocket
Anti vibration system Full AV-System
Filler cap Tool-free tank cap
EPA Certified fuel consumption l/h 2.707
CO2 g/kWh 707
Handle type Standard grip
Speed at maximum power Um 10.000
EPA Certified fuel consumption glh 0.715

1) Without fuel, without bar and chain
2) Unfueled, with guide bar and saw 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

Delivery

Most products are kept in stock, and we aim to deliver your order within 1- 2 working days. If the item is out of stock, we will keep you informed of any major delays. 
MowShop shall not be held liable for any delays in delivering goods, nor shall they be held liable for delays caused to customers work commitments due to your order not arriving on time. 
MowShop shall not be liable to customers for charges for hire of alternate machinery or labour. MowShop will not be liable for compensation of any kind due to late delivery of machinery or failure of machinery or damage to property from delivery. 
Delivery of products is usually 1-2 days from receipt of order and clearance of payment. Delivery of tractors is usually 3 – 7 working days after receipt of order. 
Products will be despatched to your preferred address directly from our distributors. A detailed receipt, together with a copy of the credit card payment receipt, will be posted separately to you. 

Cancellation Rights: Returns & Refunds after delivery

In accordance with existing UK Distance Selling Regulations and the SafeBuy Web Trader Code you have the right to cancel your order within 14 days of receiving your goods if you wish to return the items.  
To be eligible for a return, ensure that the goods remain unused and are retained in their original packaging and are in the same condition that you received it. It must also be in the original packaging. 
You must contact us before returning an item on 0345 222 1538, failure to do so may result in us being unable to action the refund process. We take no responsibility for items that are returned without prior contact or without authorisation from ourselves. 
You must return your products within 30 days of delivery at your own cost and risk. Returns should be sent to MOWSHOP, Allscott, Telford, Shropshire, TF6 5ED We will refund the price you paid for such goods within 30 days of the date of receiving the returned items, provided that the goods are returned by you and received by us in the condition they were in when delivered to you.  
Items returned without prior agreement will be refused and returned to sender resulting in you being liable for an extra charge from the couriers. If MowShop arranges to collect your items the cost to the buyer would be £36. This amount will be deducted from any refundable amount. 
If the returned item has been USED or isn’t in its ORIGINAL PACKAGING devaluing the goods resulting in handling them beyond what is necessary to establish the nature, characteristics or functioning of the goods we will deduct a reasonable amount from the refund, up to the contract price to cover us being unable to resell the item for its full value. 
We advise you take photos of the item and packaging before returning as a record of its condition, in the event of any damage acquired by the couriers when in transit. Please ensure there is no petrol or oil in the products and any batteries are disconnected before returning the items. Do not send your purchase back to the manufacturer. We will require a receipt or proof of purchase. The item must be boxed and package correctly as advised by the courier, a courier will refuse to collect the item if it is not properly boxed and we will charge for failed collections.  
The product remains yours until successfully received and signed for by a member of Mowshop.  

About Stihl

Stihl, a German family-owned company founded in 1926, is an industry benchmark for high-quality outdoor power equipment. As the world’s top-selling chainsaw brand since 1971, they’re also the only manufacturer of their own saw chains and guide bars. Stihl offers a comprehensive range to suit professional forestry, landscaping, construction, and gardening, covering chainsaws, hedge trimmers, brushcutters, blowers, robotic and ride-on lawn mowers, pressure washers, tillers, grass trimmers, and scarifiers. Built with precision engineering, anti-vibration features, and easy-start systems, Stihl tools are celebrated for their durability, innovation, and user performance across the globe.

Warranty

Stihl Warranty periods as as follows:

2 Year Warranty Period – DOMESTIC USERS

All machines shown in the current STIHL Sales Catalogue are covered for a period of 2 years** from the date of purchase by the Owner, when used for the designed purpose of that product by Domestic Users.

**STIHL High Pressure Cleaners are covered for an extended warranty period of 3 years in Domestic use.

See below for STIHL Grounds care applicable warranty periods.

All batteries and chargers for cordless products shown in the current STIHL Sales Catalogue are covered for a period of 2 years from the date of purchase by the Owner, when used for the designed purpose of that product by Domestic Users.

1 Year Warranty Period – PROFESSIONAL USERS

All machines shown in the current STIHL Sales Catalogue are covered for a period of 1 year** from the date of purchase by the Owner, when used for the designed purpose of that product by Professional Users (Including Hire, Rental and Construction Industry, Farm and Estate).

STIHL AS System, AI Line and AK System cordless products are not covered under warranty when used by Professional Users (including Hire, Rental and Construction Industry, Farm and Estate).

**STIHL High Pressure Cleaners are covered for an extended warranty period of 2 years in Professional use. NOTE: There will be no extension to the warranty period on products sold to the Hire, Rental and Construction Industry. The existing 1 year warranty period will remain for these products.

See below for STIHL Grounds care applicable warranty periods.

Ignition modules – There is a 2 year warranty on ignition modules.

**STIHL AP System Tools, Batteries and Battery products are covered for a period of 2 years from the date of purchase by the Owner, when used for the designed purpose of that product by Professional Users (including Hire, Rental and Construction Industry, Farm and Estate).

Spare Parts

Spare parts are covered by a 1 year warranty.

Warranty Periods – STIHL Grounds care Products (Mowers, Tillers, Shredders, Scarifiers & iMOW®)

All products shown in the current Sales Catalogue are covered for the period as shown below:

Product Domestic Use Professional Use Hire, Rental and Construction Industry
2, 3, 4, 5, 6 and R Series Lawnmowers 5 years* 3 Months 3 Months
R4, T4, T5 & T6 Series Ride-on Mowers 5 years* 3 Months 3 Months
MB 4 RTP, MB 655 RS 5 years* 1 year 1 year
7 Series Lawn mowers 5 years* 1 year 1 year
Lawn Scarifier 5 years* 3 Months 3 Months
Tillers and Shredders 2 years 3 Months 3 Months
Lawn mower Deck 2, 3, 4, 5, 6 & R Series 10 years* 3 Months 3 Months
Mono Handlebar 2, 3, 4, 5, 6 & R Series 10 years** 3 Months 3 Months
Mono Handlebar 7 Series 10 years** 5 years** 5 years**
iMOW® 5 years* 5 years* 3 Months

 

PPE – Personal protective equipment is covered for a period of 1 year for all user types.

* Subject to product registration and annual servicing (otherwise 2 years)
** Whole handlebar mechanism

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