Your toilet may also have a line in its tank, either printed on or etched in porcelain, that shows you where the water level should be.
Keep turning the knob until you hear the water stop running. Do not attempt to adjust or repair any of the mechanisms inside the toilet tank without emptying it first.
If it is above or below the water level, this may be the source of your high/low water level. Give the float a shake. If you can hear water inside of it, you should have a plumber replace it. Make sure the float is properly connected to the fill valve.
Avoid turning the screw more than 1 full rotation at a time. Doing too large of an adjustment at once could cause the toilet to flush inconsistently. If the screw is too rusty to turn, you can adjust the float by simply turning it. It is threaded to the metal rod the connects directly to the fill valve.
Call a plumber if the water level is still off after adjusting the float several times.
Cylinder valves are easy to install, remove and perform maintenance on, and more user-friendly for individuals less experienced with home repairs.
Familiarize yourself with the mechanisms inside your toilet tank before making any drastic changes. Refer to the instruction manual or manufacturer’s website if available.
If your float has a release clip, squeeze it to adjust it to the desired height. If not, however, you will need to locate the toilet’s adjustment dial.
If you’re having trouble turning the adjustment stem, check for a screwdriver notch. Some adjustment dials are secured by screws. [7] X Research source Do not turn the notch more than 1 full rotation at a time. If your toilet water level is adjusted too suddenly, it can cause inconsistent flushing.
Call a plumber if, after several adjustments, the level still seems off.
The fill valve you need may vary depending on the kind of toilet you have. Check what kind of fill valve your toilet model needs online before buying one. You can also buy a universal toilet repair kit at a hardware or department store. It comes with a new fill valve, float, and flapper that fit almost every toilet.
Sop up any residual water in the tank with a sponge or towel.
You may need to use a wrench or pair of pliers to loosen the nut. Lay down a towel in case any residual water leaks out of the detached water supply hose.
Work carefully to avoid damaging or dislodging any of the other mechanisms inside the tank.
You should also check the water shut-off valve and the bottom of the new fill valve. Wipe these areas with a tissue to check for moisture, and tighten the connections again if you find any. If the level still seems off, call a professional. A plumber may be able to troubleshoot your problem and solve the issue.