What happens next in this paragraph?

How to winterize your mercruiser
Read your engine's owner's manual and all safety precautions.
Most owner's manuals have step-by-step winterization instructions.
Find any missing manual online at stern drive manuals.
pick from the following.
+ Plan ahead and be aware that your engine has dangerous moving parts. Perform a good tune-up to ensure the engine is running ok.
+ Ensure that the cabin is properly ventilated before beginning to winterize your mercruiser. Fresh air should be available to drive your mercruiser onboard safely as well as escaping into the area or landing as a safer method.
+ Take your vehicle to stern drive if you're driving it at two-wheel drive. To winterize your vehicle, create a positive spark transmission.
+ If they say " winterize ", do not comply with its unavoidable rules, despite the fact that winterizing is just ready. Verify that the engine turns with no rust or identifiable stains.
Plan ahead and be aware that your engine has dangerous moving parts. Perform a good tune-up to ensure the engine is running ok.