I have a Toto 1.6 gpf two piece toilet, elongated bowl, but I do not know the model. Flushing requires the handle to be held down for about 6 seconds. Otherwise the flapper just closes and the toilet does not flush. From reading this forum I gather that is not the way it should operate.
Since the fill valve and flapper look pretty dirty/corroded, I am just thinking about replacing both of them to upgrade the innards and restore proper flush operation, and hopefully not have to mess with it again for some time.
The present fill valve is a 1B1 Master Mark III. What brand/model fill valve and flapper would you recommend for my Toto? I see many good comments about the Fluidmaster 400A. Will it work for the Toto?
If you need to know the model of my toilet - how do I determine that?