I am not sure which model this is and I can't seem to find anything online or YouTube to disassemble or adjust this particular type. I replaced the leaky cartridge by unscrewing the four screws on the brass housing and did not need to fully disassemble the handle. Now the shower runs cold, so I need to learn how to adjust this type, but I cannot figure out how to remove the black plastic piece.
I am also curious what the white button does.
I am also curious what the white button does.
