I always use sta-bil when I’m storing any gas engine. Follow the instructions on the bottle. It’s basically fuel fresh and helps with the gas breaking down. You’ll want to fill the tank near full to prevent moisture from accumulating in the tank. Make sure tire pressure is at max. Battery maintainer is a must
There’s a reason those can be referred to as suicide jacks…
If you’re ever going on, use a real floor jack. This happens with those scissor jacks all the time