Run the gas out and fog the carbs with engine off and plugs out of head. before starting is the spring, turn engine over with plugs out this will help clear moisture and stop oil from bending rods etc. The main idea is to protect componets from moisture and dirt. Some spray lubes contain eather and alcohol ,when they dry out promotes rust. Read the labels. Some people fog the engin with it running "scarry" pouring or spraying oil into the carbs with the engin running, well it makes a good show. you can get the same results with the engin off and its safer.