For ALL OEMs except Kohler K 4404 tank and Gerber 28-385 tank ; CAUTION does NOT work in One-piece Fixtures ; Tank-to-Bowl Gasket | It does NOT fit 10 Inch rough-in tanks, only 12 Inch rough-in tanks. Rough-in refers to the distance from the wall to the bolts at the center of the drain. | ONLY used on model 503 Flushmate Systems 1.6 gpf tanks | Does not include Cartridge

Work Instruction: Replacement Instructions for Two Piece Flushmate Tanks Products: Two Piece Toilet Applications (M-101XXX Models, Series: 501A, 501B, 503)Instructions: Turn off water at the supply stop. Flush the toilet to relieve water and air pressure from the Flushmate system. Disconnect water supply line from the supply shank and remove the lock nut that holds the supply shank in place. The supply shank protrudes from the bottom of the china tank on the left hand side.If necessary, disconnect the Flushrod from the flush-handle linkage. Remove the screws that attach the Flushrod to the Flushmate and use them to attach the Flushrod to the new Flushmate.Loosen the nuts on the bolts protruding from the underside of the toilet, below the china tank. These nuts should be loosened much like lug nuts on an automobile wheel; alternate between them instead of completely removing one at a time.Once the nuts have been removed, lift the china tank straight up off of the bowl. Empty any residual water that may have accumulated in the china tank into the china bowl. Place the china tank down flat on its backside on a security location.Remove...