Where are you storing it? The conditions there and length of time stored will help me make the best suggestion for you. I store my boats and motors in a machine shed in Northern Minnesota. It has a cement floor with no heat or insulation, and I store here for 26 years some items......no protection, no trouble. But this past spring I had trouble with moisture on the concrete floor, very bad. Water was dripping off the frames of my old collector cars and trucks. I will have rust to deal with when I try to bring stuff back to life.
Lesson is.....there are so many variables when things are stored. Synthetic oils and lubes generally have less protection than petrol based products. So keep that in mind. When storing 2 strokes now with considerably lean mixing ratios, it is a good idea to "fog", or at least pull spark plugs and put a little petrol based 2 stroke oil into the cylinders. Your motor, of course, is a 4 stroke......so a brief fog with a petrol product is the best advice to protect valves and cylinders.