Husqvarna 545 Mark II Operator's Manual

Husqvarna 545 Mark II Chainsaw manual cover
Pages 128
Year 2021
Language(s)
English en
French fr
Spanish sp

Husqvarna 545 Mark II Chainsaw Specification

The Husqvarna 545 Mark II Chainsaw is engineered for professional forestry and tree care applications, offering a blend of power, efficiency, and ergonomics. At the heart of the chainsaw is a robust 50.1cc X-Torq® engine, delivering reduced emissions and lower fuel consumption, while maintaining high performance output. The chainsaw features an output power of approximately 2.7 kW, ensuring it can handle demanding tasks with ease. Weighing 5.3 kg without the cutting equipment, it is designed for user comfort and maneuverability during extended use.

The 545 Mark II is equipped with AutoTune™, a system that automatically adjusts engine settings for optimal performance in varying conditions, eliminating the need for manual carburetor adjustments. Air Injection™ technology ensures long-lasting engine operation by keeping the filter clean, while the LowVib® anti-vibration system minimizes operator fatigue. The chainsaw's ergonomic rear handle and well-balanced body offer superior handling and control.

The durable magnesium crankcase withstands high rpms and tough conditions, promoting long-term reliability. The adjustable oil pump allows precise control of oil flow based on weather and application, enhancing versatility. With a maximum power speed of 9,900 rpm and a maximum recommended speed of 13,500 rpm, the chainsaw ensures efficient cutting. The side-mounted chain tensioner simplifies chain adjustments, while the quick-release air filter facilitates easy cleaning and replacement.

The Husqvarna 545 Mark II is built to meet the rigorous demands of professional forestry workers and arborists, combining cutting-edge technology with user-focused design to deliver a powerful and efficient tool.

Husqvarna 545 Mark II Chainsaw F.A.Q.

How do I start the Husqvarna 545 Mark II Chainsaw?

To start the Husqvarna 545 Mark II Chainsaw, ensure the chain brake is activated, set the choke to the start position, press the decompression valve, and pull the starter handle until the engine fires. Then, push the choke in and pull again until the engine starts.

What is the correct way to maintain the chain tension on the Husqvarna 545 Mark II?

To maintain the correct chain tension, loosen the bar nuts slightly, adjust the tensioning screw until the chain is snug against the bar but can still be pulled around by hand, and then retighten the bar nuts.

How often should I clean the air filter on my Husqvarna 545 Mark II?

Clean the air filter after every 5 hours of operation or more frequently in dusty conditions. Remove the filter, tap it gently to remove debris, or use compressed air to clean it.

What fuel mixture should I use for the Husqvarna 545 Mark II Chainsaw?

Use a 50:1 fuel-to-oil ratio with high-quality unleaded gasoline and a good quality 2-stroke engine oil.

Why does my Husqvarna 545 Mark II Chainsaw idle roughly?

Rough idling can be caused by a clogged air filter, incorrect carburetor settings, or old fuel. Clean the air filter, adjust the carburetor settings, and replace the fuel if necessary.

How do I sharpen the chain on the Husqvarna 545 Mark II?

Use a round file and file guide to sharpen each cutter on the chain. File each cutter at a consistent angle and depth, ensuring the depth gauges are filed to the correct height using a depth gauge tool.

What are the common reasons for a Husqvarna 545 Mark II not starting?

Common reasons include a flooded engine, old or incorrect fuel, a clogged air filter, or a faulty spark plug. Check and address each of these areas as needed.

How should I store my Husqvarna 545 Mark II Chainsaw for the winter?

Drain the fuel, clean the chainsaw thoroughly, remove the chain and guide bar, and store the chainsaw in a dry, dust-free environment. Consider using a protective cover.

What is the correct way to replace the spark plug on the Husqvarna 545 Mark II?

Remove the spark plug boot, unscrew the old spark plug using a spark plug wrench, and replace it with a new one, ensuring the correct gap setting before tightening.

How do I troubleshoot chain oiling issues with the Husqvarna 545 Mark II?

Ensure the oil tank is filled, check the oil filter for clogs, inspect the oil delivery line for blockages, and confirm the oil pump is functioning correctly. Adjust the oil flow rate setting if necessary.