Husqvarna H545 Parts Manual

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Year 2019

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Husqvarna H545 Chainsaw Specification

The Husqvarna H545 Chainsaw is designed for professional forestry and tree care applications, delivering a blend of power, efficiency, and ease of use. Engineered with a robust 50.1cc X-Torq engine, it provides reduced fuel consumption and lower exhaust emission levels, aligning with environmental regulations. The chainsaw features an ergonomic design with LowVib technology to minimize vibration, enhancing user comfort during extended use. Its smart start system ensures the engine starts quickly with minimal effort, while the combined choke/stop control reduces the risk of engine flooding. The H545 is equipped with a centrifugal air cleaning system that removes larger dust and debris particles before reaching the air filter, promoting longer engine life and reduced maintenance intervals. It comes with an adjustable oil pump that allows for precise control of oil flow depending on the application and weather conditions. The side-mounted chain tensioner facilitates easy chain adjustments, and the quick-release air filter simplifies cleaning and replacement. Constructed with a magnesium crankcase, the H545 offers outstanding durability for heavy-duty operation. The chainsaw also features a snap-lock cylinder cover for convenient access to vital components, and the felling marks assist in precision felling. Designed for reliability in demanding environments, the Husqvarna H545 Chainsaw is an ideal tool for professional arborists and foresters seeking high performance and durability in their equipment.

Husqvarna H545 Chainsaw F.A.Q.

How do I start a Husqvarna H545 chainsaw?

To start the Husqvarna H545 chainsaw, make sure the chain brake is engaged. Set the saw on a flat surface, turn the ignition on, pull the choke out, and then pull the starter handle until the engine fires. Push the choke in halfway and pull again until the engine starts.

What is the correct way to tension the chain on the Husqvarna H545?

To tension the chain, loosen the bar nuts slightly, turn the tensioning screw until the chain is tight against the bar, and then lift the tip of the bar to check tension. Tighten the bar nuts and ensure the chain moves freely.

How often should I clean the air filter on my Husqvarna H545?

The air filter should be cleaned after every 10 hours of use or more frequently in dusty conditions. Remove the filter, gently tap it to remove debris, wash with soapy water, rinse, and allow it to dry before reinstalling.

Why won't my Husqvarna H545 chainsaw start?

If your chainsaw won't start, check the fuel level, ensure the spark plug is functioning, inspect the air filter for blockages, and verify that the choke is being used correctly.

What type of fuel should I use for the Husqvarna H545?

Use a high-quality unleaded gasoline with a minimum octane rating of 89, mixed with a high-quality 2-stroke oil at a ratio of 50:1.

How do I sharpen the chain on a Husqvarna H545 chainsaw?

Use a round file and file guide to sharpen each cutter. File at a 30-degree angle following the factory bevel and ensure all cutters are the same length.

What maintenance should I perform after each use of my Husqvarna H545?

Clean the chainsaw, check for any loose nuts and bolts, inspect the chain tension, clean the air filter and cooling fins, and ensure the chain brake is functioning properly.

How can I prevent my Husqvarna H545 from overheating?

Regularly clean the air intake and cooling fins to ensure proper airflow. Avoid running the saw at full throttle for extended periods without allowing it to cool.