Here’s something to help, a good checklist so you don’t miss anything.

http://www.clarity.net/~adam/winter-storage.html

You need a battery tender. https://a.co/d/brPYaRz

Some gas treatment. https://www.amazon.com/dp/B001CAW2DK/ref=cm_sw_r_em_tai_c_ryNKDb9RRE8KF