Not familiar with this model but lets start with dumping the fuel and pumping the primer bulb 10X. Pull the plug, clean and regap. Most gaps are .30" but check out this site for more info. You'll need to surf around until you find your model
Sparkplugs.com - Application Search Results Mix fresh fuel with a good 2 cycle oil to a 40:1 ration. Don't use standard 30w motor oil. Fill the tank and flip the choke. Pump the bulb 6-10x, pull the throttle trigger and pull the starter rope about 6x or until it starts. If it still doesn't start move the choke to 1/2 and try again. This is just the basics if the trimmer was operational when you laid it down last year.