Husqvarna ST 424 Operator's Manual
![Husqvarna ST 424 Snow Blower manual cover](/images/iHIVXACHXAxBPScZwDJcotgJ/thumbs/thumb175x175.webp)
To start the Husqvarna ST 424 Snow Blower, first ensure the fuel shut-off valve is open, set the choke to the closed position, and the throttle to high. Press the primer bulb a few times, insert the ignition key, and pull the starter rope or press the electric start button if equipped.
Use fresh unleaded gasoline with a minimum octane rating of 87 and a maximum ethanol content of 10%. Avoid using stale or old gas to prevent engine issues.
To change the oil, run the engine for a few minutes to warm it up, then turn it off and remove the oil drain plug. Allow the old oil to completely drain into a container. Replace the drain plug and refill with the recommended oil, checking the level with the dipstick.
Check that there is sufficient fuel and that the spark plug is clean and connected properly. Ensure the choke is set correctly, and the fuel shut-off valve is open. If the problem persists, inspect the carburetor for blockages or seek professional service.
Before storing, clean the snow blower thoroughly, change the oil, and add fuel stabilizer to the gas tank. Remove the spark plug and add a few drops of oil into the cylinder, then pull the starter rope a few times to distribute the oil. Store in a dry place.
To adjust the skid shoes, place the snow blower on a flat surface. Loosen the skid shoe mounting nuts, adjust the skid shoes to the desired height, and retighten the nuts to secure them in place.
If the auger is not turning, check if the auger drive belt is worn or broken and replace if necessary. Inspect the shear pins to ensure they are not broken and replace them if needed.
Remove the spark plug wire and use a spark plug wrench to unscrew the old spark plug. Check the gap on the new plug and adjust if necessary. Install the new plug and reattach the spark plug wire.
Perform regular maintenance before and after each snow season. This includes checking and changing the oil, inspecting belts, augers, and shear pins, and ensuring all nuts and bolts are tight.
Inspect the auger and impeller for debris or damage. Check the balance of the impeller and ensure all bolts and fasteners are secure. If the problem persists, consult a professional for further inspection.