Whip out plugs, Clean and re-fit after putting a bit of fresh fuel [5ml?] in the holes.
Depending on amount of fuel in tank, If almost empty? add 20 litres or more.
If almost full. remove rear seat, pump and filter, and siphon old fuel out.
Re fit bits and add new fuel. Adding an Injector cleaner is a good idea generally
(I would use the old fuel a bit at a time or use it to light a bonfire??? not BBQ!)
Check all fluids. (not necessary to replace after only a couple of years)
If tires have been stationary they may have flat spots, (check for cracks).
After a few journeys they should warm up and re set themselves.
Apply brakes gently (a few times) when running to clean surfaces.
Check for mice nests. (I keep mice traps in my garage and one inside the car, (I have caught a baby one [in garage] so far )