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550 XP TrioBrake
Overview
HUSQVARNA 550 XP® TrioBrake
 
Husqvarna 550 XP® is developed for tree care professionals and skilled land owners. The saw has a ground breaking design and is loaded with innovative solutions for efficient, convenient operation. Our unique X-Torq® engine technology provide more power where you need it, up to 20% less fuel consumption and 75% less exhaust emission. Equipped with TrioBrake.
 
 
RevBoost™
Rapid acceleration and higher chain speed for best limbing performance.
 
TrioBrake™
TrioBrake™ allows the chain brake to be activated either automatically by the inertia release mechanism or mechanically by your left or right hand.
 
Adjustable oil pump
Adjustable oil pump makes it easy to set the chain lubrication according to your needs.
 
Air Injection
Centrifugal air cleaning system for reduced wear and longer operating time between filter cleanings.
 
Adjustable oil pump
Adjustable oil pump makes it easy to set the chain lubrication according to your needs.
 
Auto return stop switch
Stop switch automatically resets to the ON position for trouble-free starting.
 
X-Torq®
Deliver lower fuel consumption and reduced exhaust emission levels in accordance with the world´s most stringent environmental regulations.
 
 
More features:
Smart start
Inertia chain brake
LowVib®
Three-piece crankshaft
Felling marks 
Fuel pump
Combined choke/ stop control
Side-mouthed chain tensioner
Magnesium crankcase
Quick release air filter cover
Snap-lock cylinder cover 
Slimmed down design
Visible fuel level
Retained bar nuts
 
Specifications for 550 XP® TrioBrake
Engine specification
Cylinder displacement 3.06 cu.inch / 50.1 cm³
Power output 3.75 hp / 2.8 kW
Maximum power speed 10200 rpm
Fuel tank volume 16.57 fl oz / 0.49 lit
Fuel consumption 446 g/kWh
Idling speed 2800 rpm
Spark plug NGK CMR6H
Electrode gap 0.02 " / 0.5 mm
Torque, max. 2.8 Nm/6900 rpm
Lubricants
Oil tank volume 0.57 US pint / 0.27 lit
Oil pump type Adjustable flow, no flow at idle
Vibration & noise data
Equivalent vibration level (ahv, eq) front / rear handle 3/3.7 m/s²
Sound pressure level at operators ear 106 dB(A)
Sound power level, guaranteed (LWA) 116 dB(A)
Cutting equipment
Chain pitch
.325"
Recommended bar length, min-max 13"-20" / 33-50 cm
Chain speed at max power 64.3 fts / 19.6 m/s
Chain speed at 133% of maximum engine power speed 85.63 fts / 26.1 m/s
Chain gauge 0.05 "
Overall dimensions
Weight (excl. cutting equipment) 11.02 lbs / 5 kg
 
550 XP TrioBrake - Blog