Husqvarna H550XP Parts Manual
![Husqvarna H550XP Chainsaw manual cover](/images/ewgxwTWJyxRxorgLnhzYeaPw/thumbs/thumb175x175.webp)
To start the H550XP, ensure the chain brake is engaged. Set the choke to the full position if the engine is cold. Pull the starter handle until you hear the engine fire, then push the choke in. Pull the starter again until the engine starts.
Regularly check the chain tension by lifting the chain at the middle of the bar. It should snap back into place. Use the tensioning screw to adjust if necessary, ensuring the chain is snug but not too tight.
Use a 50:1 fuel-to-oil ratio with fresh unleaded gasoline and high-quality two-stroke oil. Mix thoroughly before filling the chainsaw's fuel tank.
Clean the air filter after every 5 hours of operation. Replace it if it appears damaged or excessively dirty. Ensure proper sealing when reinstalling to prevent engine damage.
Check the fuel and ensure it's fresh. Inspect the spark plug for wear or damage and replace if necessary. Make sure the air filter is clean and the choke is set appropriately.
Examine the fuel filter and lines for blockages. Check the air filter and clean if needed. Inspect the carburetor settings and adjust if necessary. Ensure the spark plug is clean and properly gapped.
Use a round file and sharpening guide matching the chain's specifications. File each tooth at a consistent angle, and ensure the depth gauges are filed to the correct height.
Empty the fuel tank and run the engine until it stops to clear the carburetor. Clean the chainsaw thoroughly, and store it in a dry place away from direct sunlight.
Remove the top cover to access the spark plug. Use a spark plug wrench to unscrew it. Check the gap on the new plug, install it, and tighten securely. Reattach the top cover.
Inspect the oil tank for blockages and ensure it's filled with proper chain oil. Check the oil filter and clean or replace it if needed. Inspect the oil pump for any signs of damage or malfunction.