The Husqvarna 450S is a powerful 50.2cc petrol chainsaw supplied with an 18-inch guide bar and Husqvarna SP33G chain. It is designed for regular firewood cutting, felling, limbing and demanding maintenance around larger gardens, estates, farms and woodland.
With 2.4kW of power and a 5kg powerhead, the 450S provides a useful balance of cutting performance, durability and manageable handling. It is a strong choice for landowners who need more capability than an occasional-use domestic chainsaw without moving directly to a professional XP forestry model.
Buy with support from Masseys: We are an authorised Husqvarna dealer with an experienced garden machinery workshop. Your chainsaw is prepared and safety checked before handover, with advice and after-sales support available from our team in Woodville, Swadlincote.
Husqvarna 450S at a glance
- Engine: 50.2cm³ Husqvarna X-Torq petrol engine
- Power output: 2.4kW
- Supplied bar: 18 inches / 45cm
- Chain: Husqvarna SP33G with .325-inch pitch
- Chain speed: 18.5m/s at maximum power
- Weight: 5kg excluding bar and chain
- Best suited to: Regular firewood preparation, felling, limbing and property or estate maintenance
- Starting assistance: Smart Start, air purge and auto-return stop switch
Who is the Husqvarna 450S for?
The Husqvarna 450S is best suited to homeowners, landowners and estate users who cut substantial quantities of firewood or regularly maintain trees and timber. Its 18-inch cutting equipment provides more capacity than a lightweight domestic saw while the 5kg powerhead remains easier to handle than many larger-displacement machines.
It is particularly well suited to:
- Regular firewood cutting
- Felling and processing small to medium-sized trees
- Limbing and storm-damage clearance
- Maintaining farms, estates, larger gardens and private woodland
- Users moving up from an entry-level domestic chainsaw
For lighter and less frequent garden work, consider the Husqvarna 440 chainsaw. When larger timber and additional displacement are regular requirements, compare the Husqvarna 455 Rancher. Professional forestry users cutting throughout the working day should consider an XP model such as the Husqvarna 550 XP.
Key features of the Husqvarna 450S
50.2cc X-Torq engine
The 50.2cc X-Torq engine produces 2.4kW of power for confident cutting through firewood and demanding property-maintenance work. Husqvarna’s engine design is intended to provide strong performance while improving fuel efficiency and reducing exhaust emissions compared with older conventional engine designs.
Smart Start and air purge
Husqvarna Smart Start is designed to reduce the effort needed to start the engine. The air-purge primer helps remove air from the carburettor and fuel system, while the auto-return stop switch automatically resets to the starting position after the engine is stopped.
Reinforced hybrid crankcase
The 450S uses a reinforced construction combining metal and durable composite materials. This provides additional robustness for regular use while helping to keep the powerhead weight to 5kg.
Air Injection and quick-release air filter
Husqvarna’s centrifugal Air Injection system removes larger dust and debris particles before they reach the air filter. The quick-release filter and snap-lock cylinder cover make routine inspection and cleaning more straightforward.
LowVib anti-vibration system
Husqvarna LowVib elements help isolate the handles from engine and cutting vibration. The angled rear handle and accessible controls also support a more natural working position during cutting.
Practical maintenance features
The retained bar nut remains attached to the clutch cover during chain adjustment, reducing the chance of losing it outdoors. The saw also includes visible felling marks, a flip-up fuel cap and a transparent fuel-level indicator.
Inertia-activated chain brake
The chain brake can be activated manually or by inertia during a sufficiently forceful kickback event. It is an important safety feature, but it does not replace correct cutting technique, suitable training or approved personal protective equipment.
Masseys expert verdict
For customers who regularly process firewood or look after a larger property, the Husqvarna 450S is a well-judged step up from an entry-level saw. Its strongest advantage is the combination of a 2.4kW engine, an 18-inch bar and a relatively manageable 5kg powerhead.
The Smart Start system, air purge, retained bar nut and quick-access air filter also make it easier to start and maintain than a basic petrol chainsaw. Choose the 455 Rancher where larger timber and additional engine capacity are the priority, or an XP-series machine for intensive professional forestry work.
For more help comparing the range, read our Husqvarna chainsaw buying guide.
Husqvarna 450S technical specifications
| Manufacturer | Husqvarna |
|---|---|
| Model | 450S |
| Article number | 970 70 26-18 |
| GTIN / EAN | 7333377537255 |
| Engine displacement | 50.2cm³ |
| Power output | 2.4kW |
| Maximum chain speed | 18.5m/s |
| Supplied guide bar | 18 inches / 45cm |
| Recommended bar length | 33–50cm / 13–20 inches |
| Chain type | Husqvarna SP33G |
| Chain pitch | .325 inch |
| Weight | 5kg excluding cutting equipment |
| Sound pressure level at operator | 106dB(A) |
| Guaranteed sound power level | 116dB(A) |
| Equivalent vibration level – front handle | 3.9m/s² |
| Equivalent vibration level – rear handle | 4.1m/s² |
Specifications are based on the current UK 18-inch configuration and may be updated by the manufacturer.
What is included?
- Husqvarna 450S petrol chainsaw powerhead
- 18-inch / 45cm guide bar
- Compatible Husqvarna SP33G saw chain
Personal protective equipment, two-stroke fuel and chain oil are sold separately unless specifically stated in the current product offer.
Prepared and supported by Masseys
Masseys is an authorised Husqvarna dealer, not simply a box-shipping retailer. Before handover, our garden machinery team can prepare and safety check the chainsaw, including the cutting equipment, chain tension and chain-oil operation.
We can also explain the starting controls, basic maintenance requirements and correct chain-tensioning procedure. Our workshop provides ongoing servicing and repair support for Husqvarna garden machinery.
Preparation and delivery arrangements can vary, particularly where fuel is involved. Please contact us before ordering if you need to confirm how the machine will be supplied or prepared.
Chainsaw safety and maintenance essentials
Petrol chainsaws are powerful cutting machines. Suitable training, correct technique and approved protective equipment are essential. At a minimum, use appropriate head, eye, hearing, hand, leg and foot protection.
- View our Husqvarna chainsaw protective kit
- Browse chainsaw helmets and face protection
- Choose suitable chainsaw trousers and chainsaw gloves
- Use the correct products from our fuel and oil range
- Keep the chain cutting correctly with suitable chainsaw sharpening equipment
- Find compatible replacements in our chainsaw chain range
Check chain tension, chain sharpness, lubrication and safety controls before use. Follow the operating manual and never use a chainsaw where the task exceeds your training, equipment or working conditions.
Frequently asked questions
Is the Husqvarna 450S suitable for cutting firewood?
Yes. Regular firewood cutting is one of the principal uses for the Husqvarna 450S. Its 50.2cc engine, 2.4kW output and 18-inch bar make it suitable for processing substantial quantities of domestic or estate firewood.
Is the Husqvarna 450S suitable for a beginner?
The 450S is best suited to a trained or confident operator who needs more performance than an entry-level garden saw. A lighter model may be easier to handle for occasional pruning or small-log work. Appropriate training and protective equipment should be used regardless of experience.
What chain does the Husqvarna 450S use?
The current 18-inch version is supplied with a Husqvarna SP33G chain with a .325-inch pitch. When purchasing a replacement, confirm the guide-bar length, gauge and drive-link count shown on the fitted bar or in the machine documentation.
What is the difference between the Husqvarna 450S and 455 Rancher?
The 450S has a 50.2cc engine and a 5kg powerhead, making it a balanced option for regular firewood and landowner work. The 455 Rancher offers greater engine capacity and is the better option when larger timber and additional torque are regular requirements. The 450S will generally feel more manageable where maximum cutting capacity is not needed.
Does the chainsaw arrive assembled?
Masseys can prepare and safety check the chainsaw before handover. Collection and delivery preparation can differ, so please contact us before ordering where you require confirmation of the exact supply arrangements.
Explore more Husqvarna chainsaws
Compare the 450S with the complete Husqvarna chainsaw range, browse all of our petrol chainsaws, or read our guide to choosing the right Husqvarna chainsaw.
