2 cycles, empty & run dry The rest Shut fuel valves & run dry Run Dry & add fres gas to any left in the tank in spring before starting I also Disconnect batteries, store in heated garage, give them a charge couple times thru winter
I like to run the pump gas out and put some VP or tru fuel in and run til it's went through the carb good and then shut off and store. 2 stroke or 4 stroke either one. I usually mix klotz original techniplate with the gas for the 2 strokes.