How to clean the belly of the beast. With pics. Getting ready to do a front end repair I decided to clean the grease and oil from the underside of the Cruiser. Step one - find a steam cleaner and get it set to spray. Step Two - Ill let the pictures do the talking. The cruiser is about 100lbs lighter as a result. As a saftey note, please use straps and chains that are properly rated, or let a professional do it.