Doug Miller wrote:

snipped

Most of them even have
instructions on the package. It's not rocket science. Just remember to turn
the water off to the toilet before you begin.

Rather than cramping yourself into an uncomfortable position to reach a
shut off valve down behind the toilet, and possibly running into a
jammed up valve or maybe starting its stem seal leaking by operating it,
it's usually much easier to just hold the float valve up with a bent
wire coat hanger or similar. That'll "turn off the water" just fine, and
you won't have to bend down once to do the whole job.

HTH,

Jeff (An old man who asks, "Why run when you can walk; why stand when
you can sit?")

--
Jeffry Wisnia

(W1BSV + Brass Rat '57 EE)

"As long as there are final exams, there will be prayer in public
schools"