Oleo-Mac GS 651 Professional Petrol Chainsaw 64cc/20"

Special Price £638.00(inc VAT) Regular Price £709.60(inc VAT)

You Save 10% (£71.60)

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Delivery Time: Usually 1-2 working days

The Oleo-Mac GS 651 professional petrol chainsaw is powered by Emak's high performance 63.4cc engine and offers a solid build quality and superior handling that is essential to professional foresters. The engine features a multi-functional lever (choke/start/stop) which makes it easier to start and stop the motor. The decompression valve helps to reduce the pulling force required to get the engine started.

Equipped with a reinforced cylinder, a hardwearing two-ring piston and an aluminium crank case, the GS 650 can cope with the rigours of all day / every day use. It has an anti-vibration system with four rubber stops and two spring dampers so the operator's hands and arms will be exposed to minimal shock when in use. The chainsaw also has a side chain tensioner that ensures the operator will not make contact with the chain when making adjustments. The Oleo-Mac GS 651 is also equipped with an automatic chain oiler which ensures the long life of the cutting gear and provides a smooth cut. The air filter has an extra large surface area so working in dry and dusty conditions will not be problematic.

More Information
Brand Oleo-Mac
Engine Emak
Displacement 63.4cc
Power 3.5kW
Horsepower 4.7hp
Start Method Recoil
Decompression Valve Yes
Fuel Tank Capacity 0.8L
Guide Bar Length 51cm / 20" (replaceable sprocket)
Chain Pitch 3/8"
Chain Gauge 0.058"
Chain Brake Yes, inertia-activated
Chain Tensioning Manual
Automatic Chain Lubrication Yes
Oil Pump Automatic/adjustable/zero flow rate at idle speed
Oil Tank Capacity 0.45L
Vibration Level Data Lh: 5.3m/s² / Rh: 5.3m/s²
Sound and Noise Data Sound pressure: 103.3dB(A)
Power level: 112dB(A)
Weight excluding Bar & Chain 6.5kg
Warranty 3 years
Promotional Image /s/h/sharppro_1_19_1.jpg

Key Features

  • Designed for heavy duty use in demanding conditions
  • Powerful 4.7hp / 63.4cc two-stroke engine
  • Combined choke / start / stop control
  • Oversized air filter
  • Two ring piston
  • Aluminium crankcase
  • Advanced anti-vibration system
  • Automatic chain oiling


The compression ratio in the cylinder reduces when the starter is pushed in, allowing the engine to be started with less effort

Lateral Chain Tensioner

Lateral chain tensioner designed to enable quick tightening of the chain prior to use, along with an automatic oil pump which regulates oil flow for optimal performance



No-nonsense everyday toos for the busy professional, these are machines that stand out for toughness of their components, their high performance and their matchless long-term durability. Specific materials used in construction guarantee unwavering quality even when tackling the most severe and lengthy of tasks, such as forestry work and the clearance of uncultivated areas of scrub and undergrowth


Gardening, farming and forestry tools for home users and professionals. Oleo-Mac covers all shades of green.

With different models to meet each user’s needs but all sharing the same exceptional quality standards in terms of performance, reliability, comfort and safety. The accessories range is offered as an extension and completion of the product range. Ergonomics, quality and styling are essential ingredients of the development of Oleo-Mac’s products: primarily designed to meet the needs of professionals whilst also taking care of the requirements of less expert users who insist on the very best.

A truly comprehensive range of superb quality products at highly competitive prices – that’s the Oleo-Mac formula. 

The Italian Oleo-Mac brand is distributed by The Emak Group which is active in the development, production and worldwide sale of an extensive range of products for three business segments:

Outdoor Power Equipment 

  • Products for gardening, forestry and agriculture, including brushcutters, law mowers, garden tractors, chainsaws, rotary tillers and rotary cultivators.

Pumps and High Pressure Water Jetting 

  • Products for agriculture, including centrifugal and diaphragm pumps for crop spraying and weed control; 
  • Products for industry, including pumps for industrial applications and high and very-high pressure systems; 
  • Products for cleaning, namely professional and semi-professional high-pressure washers, floor scrubber-dryers and vacuum sweepers.

Components and Accessories

  • Products such as strimmer line and line heads for brushcutters, accessories for chainsaws, guns, valves and nozzles for high-pressure washers and for agricultural applications, plus precision farming products (sensors and computers).
A range of machines aimed at the home user, for tidying and cleaning the garden, cutting hedges and small trunks or stems, and DIY jobs in general. Characterized by lightweight and compact construction, to make the task of the operator that much simpler. Easy to start, easy to use, easy to maintain: these are the ideal tools for getting things done quickly and neatly around the home. Solid and dependable, these are machines designed for heavy and frequent use in countryside environments: clearing overgrown and uncultivated areas, pruning and cutting firewood, crop irrigation and disinfestation tasks. Designed adopting solutions certain to ensure high work rates and maximum durability over time. No-nonsense everyday tools for the busy professional, these are machines that stand out for the toughness of their components, their high performance and their matchless long-term durability. Specific materials used in construction guarantee unwavering quality even when tackling the most severe and lengthy of tasks, like forestry work and the clearance of uncultivated areas or scrub and undergrowth.


View Oleo-Mac brochure online

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Oleo-Mac GS 651 Professional Petrol Chainsaw 64cc/20"
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