If it ran well last year, its for sure the carb. Make sure you put stabilizer before storage. Make sure you have fuel going into it though, there is a small screw on the side of the float bowl casing, remove it and see if it pees any gas. if not, your problem is upstream but if it does, then pull the carb off, its pretty easy, two bolts hold it on, then remove the throttle and the choke link and the rubber hose for fuel. then take the two phillips screws that hold the bowl cover on and gently remove it. check the main jet and the needle for the float, but in all likelihood, the thing that is plugged is your pilot since it is a rediculously small hole and it gets plugged from looking at it the wrong way. I cant speak for the 9.9 (i have the T8) but its usually under a brass nozzle that has a slot in it . BE VERY CAREFUL removing the pilot, it is super easy to break the slot and then you are in for a world of hurt and a $50 part (dont ask me how i know!) Heat it a little if its not coming off. Put it all into carb cleaner and let it sit a while. That is very likely your problem.