What sets the 450S Rancher apart from the 445S?

The 450S Rancher shares the same powerhead design as the 445S but delivers more horsepower (3.2 HP) and is part of Husqvarna’s best-selling Rancher series.

What is the cutting performance of the 450S?

The 450S offers improved cutting capacity and efficiency, making it ideal for landowners tackling tough, demanding jobs.

What is the engine size and bar length?

The 450S has a 50.2 cc engine and comes with a 20" bar (recommended range: 13"–20").

What bar and chain does it use?

It comes standard with an 18" bar (recommended range: 13"–20") and uses the SP33G X-Cut chain.

What user-friendly features does it have?

Features include Smart Start®, quick-release air filter, captured bar nuts, visible felling marks, and a flip-up fuel cap.

What safety and comfort features are included?

The 450S includes LowVib®, inertia-activated chain brake, and side-mounted chain tensioning.

What is the standard warranty for my 450S Rancher, and can I extend it?

The 450S Rancher comes with a 2-year limited warranty for residential use. You can extend your warranty up to 5 years by purchasing at least 96 fl. oz. of Husqvarna pre-mixed fuel & oil at the same time as your chainsaw and registering your product online.

What is not covered under warranty?

The warranty does not cover normal wear parts (such as air filters, spark plugs, chains, etc.), damage from improper maintenance, misuse, use of non-approved fuels (E15/E85), or commercial/rental use.

What voids the warranty on my 450S?

Using the chainsaw for commercial, agricultural, or rental purposes, failing to perform required maintenance, or using non-approved fuels will void the warranty.

How do I get warranty service?

Take your product and proof of purchase to an authorized Husqvarna servicing dealer. You are responsible for transportation costs. Registration is recommended but not required for service.

What do I need to keep for warranty claims on my 450S?

Keep your proof of purchase (receipt) for the entire warranty period, as Husqvarna may require it for verification before performing warranty work.

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Parts, manuals and support for 450S Rancher

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Warranty

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Specifications

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Engine
Chain speed at max power	60.7 fts
Cylinder displacement	3.06 cu.inch
Power output	3.2 hp

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Dimensions
Weight (excl. cutting equipment)	11 lbs

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Equipment
Recommended bar length, min	13 in
Recommended bar length, max	20 in
Pitch	.325"
Chain type	SP33G
Bar length	50 cm
Bar length (inch)	20 in

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Emission
Exhaust emissions (CO₂ EU V)	718 g/kWh

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Vibration
Equivalent vibration level (ahv, eq) front handle	3.9 m/s²
Equivalent vibration level (ahv, eq) rear handle	4.1 m/s²

	20", .325, Smart Start, US/CA, UA, single pack, CFTBx 970 70 23‑18
Sound and noise
Sound pressure level at operators ear (LpA)	106 dB(A)
Sound power level, guaranteed (LWA)	116 dB(A)

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Parts, manuals and support for 450S Rancher

Spare parts

Support content

Accessories

2 in 1 Filing guide

445, 450 Saw Tune-Up Kit

X-Force .325" 1.3mm PIXEL SM

Chainsaw box

X-CUT SP33G, .050 gauge, .325 pitch

Warranty

Check your warranty

Is your product broken?

General questions

Specifications

Chain speed at max power

Cylinder displacement

Power output

Weight (excl. cutting equipment)

Recommended bar length, min

Recommended bar length, max

Pitch

Chain type

Bar length

Bar length (inch)

Exhaust emissions (CO₂ EU V)

Equivalent vibration level (ahv, eq) front handle

Equivalent vibration level (ahv, eq) rear handle

Sound pressure level at operators ear (LpA)

Sound power level, guaranteed (LWA)