Husqvarna 556 AutoTune

Husqvarna 556 was developed for demanding work by contractors and land owners. The saw has a ground breaking design, is loaded with raw power for efficient operation and has the ability to fit up to 28" bars. Our unique X-Torq® engine technology provides more power when you need it, up to 20% less fuel consumption and 75% less exhaust emissions.
 
Features 

X-torq®

Delivers lower fuel consumption and reduced exhaust emission levels in accordance with the world's most stringent environmental regulations.

Air Injection

Centrifugal air cleaning system for reduced wear and longer operating time between filter cleaning.

Combined Choke/stop Control

Combined choke/stop control allows for easier starting and reduces the risk of engine flooding.

Lowvib®

Effective anti-vibration dampeners absorb vibration, sparing the user's arms and hands.

Easy Starting

Air purge for very easy starting.

Inertia Chain Brake

Effective inertia-activated chain brake.

Smart Start®

The engine and starter have been designed so the machine starts quickly with minimum effort. Resistance in the starter cord is reduced by up to 40%.

Quick-release Air Filter

Facilitates cleaning and replacement of the air filter.

Snap-lock Cylinder Cover

Snap-lock cylinder cover saves time when changing spark plugs and cleaning.

Flip-up Tank Cap

The flip-up tank cap is easy to open and close when refueling.

Retained Bar Nuts

The retaining function prevents losing the bar nuts.

Felling Marks

Distinct felling marks for better felling precision.

Three-piece Crankshaft

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

Visible Fuel Level

Transparent fuel indicator makes it easy to check fuel level.

Easy To Start

Combined start/stop switch, Smart Start® and fuel pump make the saw very easy to start.

Autotune

AutoTune gives optimum engine performance throughout automatic engine settings. No time spent on carburettor adjustments. It compensates for different fuels, altitude, humidity, temperature and clogged air filter.

Adjustable Oil Pump

Adjustable oil pump makes it easy to set the chain lubrication according to your needs.

Side-mounted Chain Tensioner

Side-mounted chain tensioner makes chain adjustment quick and easy.

Improved Handle Design

The rear handle is asymmetrically designed with comfort inserts for a more stable and less tiring grip.

Magnesium Crankcase

Sturdily built crankcase withstands high rpms and tough professional use, ensuring a long service life.

Slimmed-down Design

Low, slender saw body makes the chainsaw easy and convenient to handle in any situation.

Technical Specifications

Engine Specification
Cylinder displacement 3.65 cu.inch / 59.8 cm²
Power output 4.16 hp / 3.1 kW
Maximum power speed 9600 rpm
Fuel tank volume 21.98 fl oz / 0.65 lit
Fuel consumption 438 g/kWh
Idling speed 2800 rpm
Spark plug NGK CMR6H
Electrode gap 0.02 " / 0.5 mm
Torque, max. 3.51 Nm/6100 rpm
Lubricants
Oil tank volume 0.74 US pint / 0.35 lit
Oil pump type Adjustable flow, no flow at idle
Vibration & Noise Data
Equivalent vibration level (ahv, eq) front rear handle / 2.4/3.1 m/s²
Sound pressure level at operators ear 106 dB(A)
Sound power level, guaranteed (LWA) 118 dB(A)
Cutting Equipment
Chain pitch 3/8"
Chain speed at 133% of maximum engine power speed 92.85 fts / 28.3 m/s
Recommended bar length, min-max 15"-28" / 38-71 cm
Chain gauge 0.058 "
Overall Dimensions
Weight (excl. cutting equipment) 12.79 lbs / 5.8 kg