Husqvarna 545 Workshop Manual


Husqvarna 545 Workshop Manual for the service and repair of the Husqvarna 545 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 545 Workshop Manual Repair

Husqvarna 545 Workshop Manual for the Repair and service of the Husqvarna 545 chainsaw. 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 545 chainsaw. View pages online or download a complete PDF service manual that you can easily save, print or view on any device.

Husqvarna 545 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 545 Chainsaw Specifications

Cylinder displacement 50.1 cm³
19.72 in³
Power output 3.35 hp
2.5 kW
Weight 10.8 lbs
4.9 kg
Maximum power speed 9 600 RPM
Fuel tank volume 1.1 US pint
17.6 fl oz
0.52 l
Fuel consumption 0.93 lbs/kWh
14.96 oz/kWh
424 g/kWh
Idling speed 2800 RPM
Spark plug NGK CMR6H
Electrode gap 0.02”
Torque (max) 2.69 Nm
Recommended bar length (min) 13 in
33 cm
Recommended bar length (max) 20 in
50 cm
Gauge .050”
Pitch .325”
Oil tank volume 0.57 US pint
9.12 fl oz
0.27 l
Oil pump type Automatic
Oil pump capacity (min) 0.17 fl oz/min
5 ml/min
Oil pump capacity (max) 0.41 fl oz/min
12 ml/min
Sound and Noise
Sound power level, guaranteed (LWA) 116 dB(A)
Sound power level, measured 114 dB(A)
Sound pressure at operators ear 106 dB(A)
Equivalent vibration level (ahv, eq) front handle 12.47 ft/s²
3.8 m/s²
Equivalent vibration level (ahv, eq) rear handle 12.14 ft/s²
3.7 m/s²

Read the Husqvarna 545 Workshop Manual for more chainsaw specs.

The Husky 545 chainsaw is a very powerful and versatile first generation chainsaw that can be used for a variety of tasks. The Husqvarna 545 Chainsaw is a powerful machine for demanding tasks. Husqvarna 545 Chainsaw comes with an automatic oiler system and a quick-release air filter cover for convenience. It is easy to start and is a good choice for use in rugged terrain. It is easy to start and is a good choice for use in rugged terrain. where a lot of power is needed.

It was developed for demanding work by contractors and land owners. The saw has a groundbreaking design and is loaded with raw power for efficient operation. The unique X-Torq engine technology provides more power where you need it, up to 20% less fuel consumption and 75% less exhaust emissions.

The Husqvarna 545 was replaced by the 545 Mark II, second generation 545 chainsaw.


  • Lightweight
  • Ergonomics
  • Fuel economy
  • Powerful for medium use


  • Price of new chainsaw
  • Noise
  • Some people have trouble starting the 545 chainsaw


Slimmed-down design

The chainsaw is easy and convenient to handle in any situation thanks to its low and slender body.

Magnesium crankcase

Sturdily built crankcase withstands high RPMs and tough professional use. This ensures a long service life.

Felling marks

Distinct, colored marks on the chainsaw body used for aiming the direction of tree fall.

Retained bar nuts

This function prevents losing the bar nuts.

Side-mounted chain tensioner

Easier access to chain tensioning device compared to the front tensioning.

Snap-lock cylinder cover

When you need to change anything inside the saw or do some cleaning, you just pop the snap-lock on each side of the saw and you’re good to go.

Air Purge

When pressed, it removes air from the carburetor and fuel system for easy starting.

Adjustable oil pump

You can control oil flow based on application and weather conditions.

Visible fuel level

The fuel tank is transparent, so you can see how much fuel is left.


Three-piece crankshaft

Forged three-piece crankshaft for maximum durability for the toughest applications.

Air Injection

The centrifugal air cleaning system prevents larger dust and debris particles from reaching the air filter. In return you get improved engine life and less maintenance cleaning the air filter. All Husqvarnas have this.



The vibration dampening system called LowVib is present in all Husky chainsaws. Metal springs in the engine suspension reduce vibrations felt by the operator. This allows you to work longer without your hands getting exhausted and it also prevents developing medical conditions.

The front handle and hand guard are offset by 7° to provide more natural holding position.

Inertia activated chain brake

In case of kickback the inertia mechanism will stop the chain from running. This significantly reduces the risk of injury.


There are several things that make starting the saw easy, such as the combined start/stop switch and fuel pump or the Smart Start, which reduces the amount of cord pulls you have to make before the saw starts running.

Husqvarna 545 Workshop Manual PDF

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