Put the toilet seat back on the toilet bowl. Meanwhile you may want to take some washers and cut a slot in them and stack as many as you need and gently tap them under the seat to tighten it up temporarily. Omg The Omigo Toilet Seat Cleans Butts While Saving The Environment Review 10 Discount Updated 7 2 20 Hightechdad What to Do If. How to tighten toilet seat with no access underside . A ratchet wrench with a deep socket is usually the easiest way to tighten these bolts but an adjustable wrench can also be used. If the bolts spin and dont tighten youll need to use pliers to grip the nut on the underside of the toilet while turning the top of the bolt with a screwdriver. But this wont last forever. So recheck your toilet seat for any joint bolts or screws and the hinges as well. Then screw tops are revealed each side of the pan which you tighten up first positioning correctly for the seat. Set the seat back on the hinge pegs in the upright position. Do not use a p...