Husqvarna 545 RXT AT Parts Manual

Husqvarna 545 RXT AT Brushcutter manual cover

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Year 2021

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Husqvarna 545 RXT AT Brushcutter Specification

The Husqvarna 545 RXT AT Brushcutter is a high-performance, professional-grade tool designed for intensive landscaping and forestry tasks. Engineered with a robust X-Torq® engine, it delivers superior power output while ensuring optimal fuel efficiency and reduced exhaust emissions, aligning with stringent environmental standards. The brushcutter features an AutoTune™ system that automatically adjusts engine performance for maximum efficiency, eliminating the need for manual carburetor adjustments and ensuring consistent operation regardless of altitude, humidity, or temperature changes.

The 545 RXT AT is equipped with an ergonomic handlebar and an adjustable harness, enhancing user comfort and reducing strain during prolonged use. Its design incorporates LowVib® technology, which minimizes vibrations, contributing to user comfort and reducing the risk of strain injuries. This model also includes a Balance XT™ harness, providing excellent weight distribution and further improving user ergonomics.

The cutting system of the Husqvarna 545 RXT AT is versatile, capable of handling both grass and tougher vegetation with ease. It includes a high-capacity trimmer head and is compatible with a range of cutting attachments, making it adaptable to various tasks. The large fuel tank extends operation time, minimizing the need for frequent refueling during extensive projects.

Durability is a key feature of the 545 RXT AT, with a reinforced design that ensures it withstands demanding conditions. Maintenance is simplified with features like a detachable filter cover and a transparent fuel tank for easy monitoring. Overall, the Husqvarna 545 RXT AT Brushcutter combines power, efficiency, and user-friendly features, making it an ideal choice for professional landscapers and forestry workers seeking reliable performance in challenging environments.

Husqvarna 545 RXT AT Brushcutter F.A.Q.

How do I start the Husqvarna 545 RXT AT Brushcutter?

To start the Husqvarna 545 RXT AT Brushcutter, ensure the stop switch is in the 'ON' position. Press the primer bulb several times until fuel is visible. Set the choke to the 'closed' position if the engine is cold. Pull the starter handle until the engine fires, then push the choke to the 'open' position and pull again until the engine starts.

What type of fuel should I use for the Husqvarna 545 RXT AT?

Use unleaded gasoline with a minimum octane rating of 89 and mix it with high-quality two-stroke engine oil at a ratio of 50:1. Always use fresh fuel to ensure optimal performance.

How do I maintain the air filter on the Husqvarna 545 RXT AT?

To maintain the air filter, remove the air filter cover and take out the filter. Clean it with warm, soapy water, rinse thoroughly, and allow it to dry completely. Apply a small amount of oil to the filter before reinstalling it.

What should I do if the brushcutter vibrates excessively during operation?

Excessive vibration may be caused by a damaged cutting attachment or imbalanced blade. Check the cutting attachment for damage and ensure it is securely fastened. Replace any damaged parts as necessary.

How often should I sharpen the blades on the Husqvarna 545 RXT AT?

Sharpen the blades whenever you notice a decrease in cutting efficiency. Regular inspection and sharpening after every 25 hours of use is recommended for optimal performance.

What is the correct procedure for adjusting the carburetor on the Husqvarna 545 RXT AT?

Adjusting the carburetor should be performed by a qualified technician. However, you can make minor adjustments using the L (low speed) and H (high speed) screws. Start by adjusting the L screw for smooth idle and the H screw for optimal performance at full throttle.

How do I replace the trimmer line on the Husqvarna 545 RXT AT Brushcutter?

To replace the trimmer line, first remove the trimmer head cover. Take out any remaining line and insert a new line into the hole, winding it evenly around the spool. Ensure the line is secure before reattaching the cover.

What regular maintenance tasks are required for the Husqvarna 545 RXT AT?

Regular maintenance includes cleaning the air filter, checking the spark plug, inspecting and cleaning the cutting attachment, and lubricating moving parts. Regularly check for loose screws and components.

What should I do if the engine of the Husqvarna 545 RXT AT fails to start?

If the engine fails to start, check the fuel level, ensure the spark plug is in good condition, and verify that the stop switch is in the 'ON' position. If the problem persists, consult the user manual or contact a service professional.

How do I safely store the Husqvarna 545 RXT AT Brushcutter?

To store the brushcutter safely, clean it thoroughly and drain the fuel tank to prevent gum deposits. Store it in a dry, well-ventilated area away from direct sunlight and extreme temperatures. Ensure it is securely positioned to prevent falling.