[F] About five day ago my toilet started not to flush. We have figured out that if we turn the water off and back on after a minute that it will flush one time. We have to repeat that step every time we flush. We have a fluidmaster 400 series. What is wrong and how can I fix it? Thanks:confused:

FAre you turning the water off at the stop under the tank? The Toilet Shoppe (http://www.toiletology.com/Shoppe.shtml) This should help you. Is the gray can moving up with the water level?