Husqvarna H445e II Parts Manual

The correct fuel mixture for the Husqvarna H445e II chainsaw is a 50:1 ratio of unleaded gasoline to two-stroke oil. Use high-quality, unleaded gasoline with a minimum octane rating of 89 and a premium two-stroke oil.
You should clean the air filter after every 5 hours of operation or more frequently if you're working in dusty conditions. Remove the filter and wash it with warm, soapy water, then let it dry completely before reinstalling.
To start the chainsaw, set the chain brake, push the choke lever to the full choke position, and press the decompression valve. Pull the starter handle until the engine fires, then set the choke to half. Continue pulling until the engine starts, then release the chain brake.
The chain may come off if the tension is too loose, the bar nuts are not tightened properly, or if the chain or bar is worn out. Check the chain tension regularly and ensure the guide bar and chain are properly aligned and secured.
If the chainsaw is not cutting efficiently, check the chain tension, ensure the chain is sharp, and verify that the guide bar is not damaged. Also, inspect the clutch and sprocket for wear. Regular maintenance will ensure optimal performance.
After each use, clean the chainsaw, check the chain tension, inspect for any damage, clean the air filter, check the fuel level, and ensure all screws and fasteners are tight. This helps in prolonging the lifespan of the chainsaw.
To adjust the chain tension, loosen the bar nuts slightly, then use the tensioning screw to adjust the chain. Ensure the chain is snug against the bar but can still be pulled around by hand. Tighten the bar nuts once the tension is set.
If the engine floods, turn off the choke, fully open the throttle, and pull the starter cord several times until the engine starts. You may need to remove and dry the spark plug if it remains flooded.
To prevent overheating, ensure the air intake is clean and unobstructed, use the correct fuel mixture, and avoid running the saw at maximum power for extended periods. Regular maintenance is imperative to avoiding overheating issues.
Common signs include difficulty starting the engine, misfires, poor performance, or a noticeable decrease in power. Inspect the spark plug for carbon buildup or damage, and replace it if necessary.