Description given on Youtube:
Before you put your chainsaw away for winter you conduct a complete service. Start with the air filter. No need to replace the air filter simply blow it out with and air compressor and wash in warm soapy water. Next replace the spark plug. A very nice feature with Stihl and Husqvarna (translated mill house) Is all respective models share a common spark plug. Next replace the drive sprocket for this is prone to wear. Remove the fuel filter from the fuel tank and replace with a new part. Blow all wood chips and dust from covers and around carburetor. If you are not going to use your chainsaw over the winter it is best to empty fuel tank, start engine and run until the saw dies. Be sure to fill the bar oil reservoir to prevent moister from collecting inside of oil reservoir. If you will be using your chainsaw over the winter fill the fuel tank with non ethanol fuel / gas premium stabilized fuel. Check your pull start rope for wear and replace if needed. Last be sure to never store your saw on a concrete floor. Low places tend to collect moisture and be sure to start your saw at least once a year. I nearly forgot. This is a good time to replace your chain with a good full skip square chisel and full skip teeth.
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