It wasn't hard on mine. Mine was sitting for three and a half years. So I removed carb assembly, took the tops off, Sprayed them down with carb cleaner. Reinstalled. new oil, new filter, new battery. I filled it up with Premium fuel mixed with a bit of seafoam. She started and ran like a raped ape.
Still doing more oil changes to flush the system. Im already on my third oil change in 300 miles. Going to ride another 200 and do my last oil change and get back on the factory scheduled service schedule.