Overview
Husqvarna 550 XP® Mark II Chainsaw (50cc Professional)
The Husqvarna 550 XP® Mark II is a professional-grade 50cc chainsaw built for demanding forestry and tree care work. Designed for felling, limbing, and bucking, it delivers best-in-class power with a lightweight, slimmed-down design for superior handling and productivity.
Equipped with Husqvarna’s X-TORQ® engine and AutoTune technology, this saw automatically optimizes performance in varying conditions—no carburetor adjustments required. Built with a durable magnesium crankcase and advanced cooling system, the 550 XP® Mark II is engineered for long service life in tough environments.
Key Features
- 50cc Professional Power: Delivers 4.0 HP (3 kW) for demanding cutting applications.
- AutoTune: Automatically adjusts engine settings for optimal performance in all conditions.
- X-TORQ® Engine: Provides high power with improved fuel efficiency and reduced emissions.
- Advanced Cooling System: Optimized airflow extends engine life and reliability.
- Magnesium Crankcase: Built for durability under high RPM and heavy professional use.
- LowVib® Technology: Reduces vibration for improved operator comfort.
- Air Injection™: Centrifugal air cleaning system reduces filter maintenance and extends engine life.
- Slim, Lightweight Design: Easy to handle for precision work and reduced fatigue.
- Retained Bar Nuts & Starter Screws: Prevents loss during service.
- Snap-Lock Cylinder Cover: Quick access for maintenance.
- Flip-Up Fuel Cap: Easy to open and secure, even with gloves.
- Adjustable Oil Pump: Customize oil flow based on application.
- Side-Mounted Chain Tensioner: Easier chain adjustments.
- Integrated Felling Sight: Molded into the saw for long-term accuracy.
Performance & Operation
- Power Output: 4.0 HP (3 kW)
- Displacement: 50.1 cc
- Max Chain Speed: 64.3 ft/s (19.6 m/s)
- Max Power Speed: 10,200 RPM
- Idle Speed: 2,800 RPM
- Clutch Engagement: 3,900 RPM
Cutting Equipment
- Recommended Bar Length: 13″ – 20″
- Included Bar Length: 20″
- Chain Pitch: .325″
- Gauge: .058″
- Chain Type: S35G
- Sprocket Type: Rim, 7-Tooth
Specifications
- Spark Plug: NGK CMR6H
- Oil Pump: Adjustable (no flow at idle)
- Oil Tank Capacity: 0.68 US pint
- Fuel Mix: 50:1 (Husqvarna 2-stroke oil or equivalent)
Dimensions & Weight
- Weight (Powerhead Only): 11.7 lbs (5.3 kg)
Noise & Vibration
- Sound Pressure (Operator Ear): 107 dB(A)
- Sound Power (Guaranteed): 117 dB(A)
- Front Handle Vibration: 4.0 m/s²
- Rear Handle Vibration: 4.6 m/s²