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Husqvarna 550 XP Mark II 50cc 18in Gas Chainsaw
- $307.00
- Brands Husqvarna
- Product Code: 967 69 08-38
- Availability: In Stock
Husqvarna 550 XP® Mark II 50.1 cc Gas Chainsaw – 18-Inch Bar Product Overview The Husqvarna 550 XP® Mark II is a professional-grade gasoline chainsaw designed for forestry, tree care, felling, limbing, and bucking. Its 50.1 cc X-Torq® two-stroke engine produces approximately 4 hp (3.0 kW), delivering the power and responsiveness required for demanding cutting applications. This configuration fe..
High Performance 50cc Gas Chainsaw Husqvarna 550 XP Mark II 18in
Husqvarna 550 XP® Mark II 50.1 cc Gas Chainsaw – 18-Inch Bar
Product Overview
The Husqvarna 550 XP® Mark II is a professional-grade gasoline chainsaw designed for forestry, tree care, felling, limbing, and bucking. Its 50.1 cc X-Torq® two-stroke engine produces approximately 4 hp (3.0 kW), delivering the power and responsiveness required for demanding cutting applications.
This configuration features an 18-inch guide bar, offering a balanced combination of cutting capacity and maneuverability. It is particularly useful for professional users who need a versatile saw that can move efficiently through branches, small- to medium-sized timber, and dense working environments.
Husqvarna equips the 550 XP® Mark II with AutoTune™, Air Injection™, LowVib®, an optimized cooling system, and a forged three-piece crankshaft to support reliable performance and durability during regular professional use.
Key Features
- 50.1 cc X-Torq® engine provides strong professional cutting performance.
- 4 hp / 3.0 kW output delivers an excellent power-to-weight ratio.
- 18-inch guide bar balances reach, cutting capacity, and maneuverability.
- .325-inch chain pitch is matched to the saw's professional 50 cc power class.
- .050-inch / 1.3 mm chain gauge provides a durable cutting setup.
- SP33G chain is specified for the 18-inch, 1.3 mm configuration.
- 19.6 m/s chain speed at maximum power supports fast cutting.
- X-Torq® engine technology is designed to improve fuel efficiency and reduce exhaust emissions.
- AutoTune™ carburetion automatically adjusts the fuel-air mixture to help maintain consistent engine performance.
- Air Injection™ system helps remove larger dust and debris particles before they reach the air filter.
- LowVib® technology reduces vibration transmitted to the operator.
- Optimized cooling system helps manage engine temperature during demanding work.
- Forged three-piece crankshaft is designed for professional-duty durability.
- Adjustable oil pump lets the operator regulate chain lubrication according to working conditions.
- Side-mounted chain tensioner simplifies chain adjustments.
- Retained bar nuts help prevent the nuts from becoming separated from the saw during maintenance.
- Inertia-activated chain brake provides an important safety feature in the event of kickback.
- Slim professional design makes the saw easier to maneuver around branches and through dense vegetation.
Product Specifications
| Specification | Details |
|---|---|
| Brand | Husqvarna |
| Model | 550 XP® Mark II |
| Product Type | Professional Gas-Powered Chainsaw |
| Intended Use | Forestry / Tree Care |
| Engine Type | 2-Stroke X-Torq® |
| Cylinder Displacement | 50.1 cc |
| Power Output | 4 hp / 3.0 kW |
| Maximum Power Speed | 10,200 rpm |
| Maximum Torque | Approx. 3.15 Nm |
| Maximum Torque Speed | Approx. 7,800 rpm |
| Idle Speed | 2,800 rpm |
| Clutch Engagement Speed | 3,900 rpm |
| Guide Bar Length | 18 in / 45 cm |
| Recommended Bar Range | 13–20 in |
| Chain Pitch | .325 in |
| Chain Gauge | .050 in / 1.3 mm |
| Chain Type | SP33G |
| Chain Speed at Maximum Power | Approx. 19.6 m/s |
| Sprocket | 7-tooth rim |
| Chain Lubrication | Automatic |
| Oil Pump | Adjustable |
| Air Injection™ | Yes |
| AutoTune™ | Yes |
| LowVib® | Yes |
| Chain Brake | Inertia activated |
| Weight, excluding cutting equipment | Approx. 11.7 lb / 5.3 kg |
| Operator Ear Sound Pressure | Approx. 107 dB(A) |
| Guaranteed Sound Power Level | Approx. 117 dB(A) |
Specifications may vary by market, model year, and cutting-equipment configuration. Verify the exact specification for the specific SKU before purchase.
Powerful 50.1 cc X-Torq® Engine
The 550 XP® Mark II is powered by a 50.1 cc X-Torq® two-stroke engine producing approximately 4 hp. This gives the saw the cutting power needed for professional forestry and tree-care work while keeping the overall machine compact and maneuverable.
The X-Torq® engine is designed to improve combustion efficiency while helping reduce fuel consumption and exhaust emissions compared with conventional two-stroke engine technology.
Versatile 18-Inch Cutting System
The 18-inch guide bar provides a versatile setup for professional users. It offers more reach than shorter bars while remaining easier to maneuver than a 20-inch configuration.
The 18-inch setup is especially useful for:
- Tree limbing
- Small- and medium-sized tree felling
- Bucking logs
- Firewood processing
- Arborist work
- General forestry maintenance
- Property and land management
The .325-inch pitch, .050-inch gauge SP33G chain is designed to complement the saw's 50 cc engine and professional cutting performance.
AutoTune™ Technology
Husqvarna's AutoTune™ system automatically adjusts the engine's fuel-air mixture to help maintain consistent operation as working conditions change.
Temperature, altitude, fuel quality, and air-filter condition can influence two-stroke engine performance. AutoTune™ helps compensate for these variables, reducing the need for frequent manual carburetor adjustments.
Air Injection™ Filtration
The 550 XP® Mark II uses Air Injection™ centrifugal air-cleaning technology to help remove larger dust and debris particles before they reach the engine air filter.
This is particularly valuable in forestry environments where sawdust, bark, dirt, and other airborne debris are common. Reducing the amount of material entering the filter can help maintain consistent engine performance.
LowVib® for Improved Comfort
The integrated LowVib® system helps isolate engine and cutting-system vibration from the handles.
For professional operators who use a chainsaw repeatedly throughout the day, reduced vibration can contribute to greater comfort and improved control during extended cutting sessions.
Optimized Cooling System
Professional chainsaws can experience significant heat buildup during heavy cutting. The 550 XP® Mark II features an optimized cooling system designed to help manage engine temperature during demanding operation.
Combined with the saw's durable engine components, this design supports the reliability expected from a professional forestry machine.
Durable Professional Construction
A forged three-piece crankshaft is designed to withstand the stresses associated with frequent professional use. The saw also features a professional-grade construction intended for demanding forestry environments.
The side-mounted chain tensioner makes chain adjustment more convenient, while retained bar nuts help keep the nuts attached to the saw during maintenance.
Adjustable Chain Lubrication
The adjustable oil pump allows the operator to control the amount of chain oil delivered to the cutting equipment.
This allows lubrication to be adjusted for factors such as bar length, wood type, and operating conditions, helping maintain appropriate lubrication while avoiding unnecessary oil consumption.
Safety and Operator Control
The 550 XP® Mark II incorporates an inertia-activated chain brake designed to stop the chain during a sufficiently forceful kickback event.
Proper chainsaw safety practices remain essential. Operators should use appropriate personal protective equipment, inspect the saw before operation, maintain the chain correctly, and follow the manufacturer's safety and operating instructions.
Ideal Applications
The Husqvarna 550 XP® Mark II with an 18-inch bar is well suited for:
- Professional forestry
- Tree felling
- Limbing and bucking
- Arborist work
- Small- and medium-sized tree removal
- Firewood cutting
- Farm and ranch maintenance
- Land management
- Storm-damage cleanup
- Professional property maintenance
Why Choose the Husqvarna 550 XP® Mark II 18-Inch?
The Husqvarna 550 XP® Mark II 18-inch chainsaw combines a 50.1 cc, 4 hp X-Torq® engine with a versatile guide-bar length that provides a strong balance between cutting capacity and maneuverability.
With professional features such as AutoTune™, Air Injection™, LowVib®, optimized cooling, an adjustable oil pump, and a forged three-piece crankshaft, it is designed to handle the demands of frequent forestry and tree-care work.
For professionals who want a capable all-around chainsaw without the additional reach of a 20-inch bar, the 18-inch 550 XP® Mark II offers a practical combination of power, cutting speed, durability, and control.