Toilet Tank Installation


Most residential toilets have two main compartments: a toilet bowl and a toilet tank. The toilet tank is above the bowl and is a critical component in flushing the toilet. The tank fills with water, which is retained in the tank by a rubber flapper. When the toilet is flushed, the flapper lifts, allowing the water from the tank to flow into the bowl below, creating a siphon that flushes the toilet. When installing a new tank, it is important to properly seat the tank and install a rubber washer to prevent leaks.

Things You'll Need

  • Screwdriver
  • Socket wrench set
  • Install the fill valve and flapper assemblies into the toilet tank before installing the tank onto the bowl, following the manufacturer's instructions.

  • Place the rubber washers included with the tank over the two bolt holes on the bottom of the tank. Insert the bolts included with the tank through the rubber washers and through the holes at the bottom of the tank.

  • Place the rubber gasket, included with the tank, around the outlet on the bottom of the holding tank.

  • Place the tank on top of the bowl, aligning the bolts so that they pass through the bolt holes on the top of the bowl.

  • Hold the bolts in place from the top of the tank with a screwdriver and tighten the nuts included with the tank to secure the tank onto the bowl. Use either a socket wrench to tighten the nut or the proprietary tool included with the tank, if applicable. Do not overtighten, as overtightening could cause the tank or bowl to crack.

  • Connect the water supply line to the bottom of the toilet tank. Thread the connector onto the tank by hand until tight.

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