Oleo-Mac GS-451-16 Petrol Chainsaw (41cm Guide Bar)


  • A feature-packed petrol chainsaw capable of handling commercial and heavier-duty domestic applications
  • Powerful but fuel efficient and environmentally sound Emak two-stroke engine
  • EasyOn and fuel primer system for reliable, trouble-free starting each and every time
  • Aluminium automatic/adjustable oil pump for durability and flexibility of use
  • Lateral chain tensioning – no manual contact with chain when making adjustments
  • Inertia chain brake and hand guard confer high levels of user safety
  • Easily viewable oil and fuel tanks
  • Ergonomic handle design and vibration damping for comfortable, low-fatigue operation
Oleo-Mac GS-451-16 Petrol Chainsaw (41cm Guide Bar) £529.00
Oleo-Mac GS-451-16 Petrol Chainsaw (41cm Guide Bar)
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Oleo-Mac GS-451-16 Petrol Chainsaw

Characterised by its superior power to weight ratio, rapid chain speed and optimised ergonomics, this premium petrol chainsaw from high-end Italian manufacturers, Oleo-Mac, offers aggressive cutting performance, and has been produced with both professional and heavy-duty domestic use in mind.

The beefy 42.9cc air-cooled two-stroke engine on the Oleo-Mac GS-451 Petrol Chainsaw delivers a substantial 2.9hp to the 41cm cutting gear, and combines a forged-steel crank with a two-ring piston and a nickel-plated cylinder to ensure unwavering reliability in the face of all-day, every-day use.

Other important engine features include EasyOn for almost effortless pull-starts; and a large-surface nylon air filter, which provides excellent protection against damaging, component-life-limiting debris ingress.

The Oleo-Mac GS-451 Petrol Chainsaw has been equipped with an automatic oil pump – made from lightweight, rust resistant aluminium – which cuts running temperature, and facilitates a smooth cutting action by providing a continuous flow of lubrication to the bar and chain as you work. The oil flow rate can be adjusted to suit both the timber density, and the ambient temperature.

Thanks to its rubber mounts and spring dampers, which work to lessen vibration transfer from the engine to the operator, the Oleo-Mac GS-451 Petrol Chainsaw will prove comfortable and easy to control for the duration of lengthy woodcutting sessions. Contributing further to user comfort is its non-slip-grip side handle.

In order to prevent accidental injury being inflicted in the unlikely event the saw ‘kicks back’, Oleo-Mac have furnished this model with an automatic chain brake, which brings the chain to an immediate halt the moment any inertia is detected.

Additional information



Engine Type

Petrol 2-stroke

Engine Capacity


Engine Power

2.9hp / 2.1kW

Engine Fuel-Tank Capacity

0.32 Litres

Guide-Bar Length


Chain Pitch


Chain Gauge


Chain Brake


Chain Tensioner


Chain Oiler

Automatic / Adjustable – Aluminium

Chain-Oil Capacity

0.22 Litres

Sound Level

103 dB(A)

Product Weight



3 Years


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Shipping Info

Shipping Info

If you’re buying a boxed product, we aim to get your order delivered next working day – UK mainland where possible.

If you’re buying a tractor or ride-on mower – a special order item – it could be slightly longer, as we need to PDI the machine.

We do try and van-deliver these machines if we can, as this gives us a chance to demonstrate the product, and to ensure you’re happy and confident with your purchase.

If we can’t van-deliver your machine, as you’re out of our local delivery area, the tractor will be sent on a pallet via a courage company. They will then contact you directly to book a specific day and time that suits you.