Husqvarna 450 e II Workshop Manual


Husqvarna 450 e II Workshop Manual for the service and repair of the Husqvarna 450 e II chainsaw. View pages online or download a complete PDF manual with clear easy to understand images, diagrams and information. Print or save to any device.


Husqvarna 450 e II Workshop Manual Repair

Husqvarna 450 e II Workshop Manual for the Repair and service of the Husqvarna 450 e II chainsaw (450e mark 2). The PDF workshop service manual has accurate, easy to understand information and diagrams to help repair and service the chainsaw. Service Information to help you to troubleshoot, repair and fix the Husqvarna 450 e II chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 450 e II Workshop Manual Contents

Contents, Introduction, Safety Regulations, Symbols, Technical data, Service tools, Service data, Safety equipment, Starter, Electrical system, Centrifugal clutch, Lubrication system, Carburetor, Tank unit, Anti-vibration system, Piston and cylinder, Crankcase and crankshaft, Troubleshooting, Repair Instructions.


Carburetor – General Chainsaw Adjustment

Adjusting the carburettor involves adjusting the engine to the local conditions e.g. climate, altitude, fuel and type of two-stroke oil. The carburettor is equipped with three adjustment options.
L = Low speed jet
H = High speed jet
T = Idling adjustment screw

The L and H jets adjust the fuel flow to match the airflow that the throttle valve opening allows. Turning them clockwise makes the fuel/air mixture weaker (less fuel in relation to the amount of air) and turning them anti-clockwise makes the fuel/air mixture richer. A weak mixture increases the engine speed and a rich mixture decreases the engine speed. The T screw controls the throttle position when idling. Turning the T screw clockwise gives faster idling; turning it anti-clockwise lowers idling speed (see manual for complete guide).

See the complete service workshop manual, carburetor manual, parts list, operator manual and technical supplements PDF downloads. Also the repair and service articles available on this website for more information on how to service, repair and find parts for the chainsaw.

Husqvarna 450 e II Chainsaw Specifications


Bar length (inch) 20 in
Chain speed at 133% of maximum engine power speed 23 m/s
Chain speed at max power 17.3 m/s
Pitch .325″
Recommended bar length, max 20 in
Recommended bar length, max 50 cm
Recommended bar length, min 13 in
Recommended bar length, min 33 cm


Cylinder bore 44 mm
Cylinder displacement 50.2 cm³
Cylinder stroke 33 mm
Electrode gap 0.5 mm
Fuel consumption 504 g/kWh
Fuel tank volume 0.45 l
Idling speed 2700 rpm
Ignition module air gap 0.3 mm
Maximum power speed 9000 rpm
Power output 2.4 kW
Power source Petrol
Torque, max. 2.6 Nm


Oil pump type Fixed flow
Oil tank volume 0.26 l
 Sound and Noise
Sound power level, guaranteed (LWA) 115 dB(A)
Sound power level, measured 113 dB(A)
Sound pressure level at operators ear 104 dB(A)


Weight (excl. cutting equipment) 5.1 kg

Read the Husqvarna 450 e II Workshop Manual for more chainsaw specs.

The Husky 450 e II Chainsaw is a second generation powerful all-round saw.

This model boasts a 50.2 cc petrol engine with X-Torq technology, providing excellent levels of power with lower fuel consumption and reduced exhaust emissions. It has an 18 inch / 45 cm bar length, making it perfect for small to medium diameter timber and general farm or estate maintenance work. Also included on this model are felling marks to increase your cutting accuracy.

The 450e mark 2 has a particularly ergonomic rear handle that provides increased comfort with a soft inlay, ergonomic trigger and asymmetrical design. This is a lightweight machine, weighing just 5 kg (excluding cutting equipment), so you can use it for longer without getting tired. Also helping on this front is Husqvarna’s LowVib technology, which uses effective anti-vibration dampeners to spare your arms and hands while working.

A forged three-piece crankshaft provides maximum levels of durability so that the 450e mark 2 can deal with tough tasks without a problem. The centrifugal air cleaning system helps to reduce wear and ensure longer operating times between filter cleanings, while simple additions such as a quick-release air filter, snap-lock cylinder cover and flip-up tank cap ensures you can keep your saw working at its best, with ease.

SmartStart and an auto-return stop switch provide quicker, more reliable and hassle-free starting, and an inertia chain brake allows you to work with increased confidence and safety.


  • Bar length (inch): 20″
  • Cylinder displacement: 50.2³
  • Power output: 2.4 kW
  • Weight (excl. cutting equipment): 5.1 kg
  • Chain type: SP33G X-Cut
  • Pitch: .325 Pixel
  • Gauge: .050
  • Drive links: 80
  • X-Torq: Delivers lower fuel consumption and reduced exhaust emission levels in accordance with the world´s most stringent environmental regulations.
  • Air Injection: Extends the interval between filter cleaning, improving efficiency and increases engine life.
  • Flip-up tank cap: The flip-up tank cap is easy to open and close when refueling.
  • Quick-release air filter: Facilitates cleaning and replacement of the air filter.

Husqvarna 450 e II Workshop Manual PDF

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