Signature Hardware 948418 Standard One-Piece Toilet Installation Guide

Signature Hardware 948418 Standard One-Piece Toilet



We recommend consulting a professional if you are unfamiliar with installing plumbing fixtures. Signature Hardware accepts no liability for any damage to the  plumbing, floor, wall, or for personal injury during installation.

Observe all local plumbing and building codes.

Unpack and inspect the toilet for shipping damage. If any damage is found, contact our Customer Relations team at 1-800-221-3379


Ensure that you have gathered all the required materials that are needed for the installation.



Closet Flange

Phillips Screwdriver

Tape Measure


Adjustable Wrench

Closet Bolts

Hacksaw Sierra para

Hacksaw Sierra para

Silicone Sealant (100% Neutral Cure)


  1. Carefully inspect near the existing toilet to see if the toilet has a supply shut-off valve below the tank. If it  does not, install one before installing the new toilet.
  2. Confirm that there is enough floor space to install the toilet unit and that the bathroom door will open/close without obstruction.
  3. Inspect and install new closet flange if needed. Do not install toilet unless closet flange is in good condition.
  4. Allow wax seal to reach room temperature before installation to ensure proper seal.


  1. Place two new closet bolts into the slot on the toilet flange.
  2. Lay toilet on to its side (use cardboard to cushion the ceramic and prevent damage). Install the wax seal evenly around the waste flange horn. Place a bead of sealant on bottom of toilet foot.
  3. Align and lower toilet over flange and bolts. Apply your full body weight around the toilet to set seal.Note: Make sure to not lift or rock the bowl after placement. If the watertight seal breaks. The wax seal will need to be replaced, or their will be a risk of external leakage.
  4. Place bolt cap base on bolt, then place metal washer and nut. Alternately tighten the flange nuts until the bowl is seated to the floorNote: Ensure that toilet is level before fully tightening closet bolts.Note: Overtightening may cause breakage or chipping.
  5. If bolts extend more than 1/4” (6mm) over top of the nuts, cut off excess. Conceal with bolt cap.
  6. Water supply connection: Connect the flexible supply line from the stop valve to the toilet fill valve. Make sure not to use sealants on supply fittings. Hand tighten supply line, then open stop valve and look closely for any water leaks. Adjust the tank water height to the indication mark on the flush valve tube.


Adjust fill valve water line level to proper height. To adjust the water level rotate the adjustable rod, and that will adjust the height of the float cup and change water level.


Make sure not to use pipe dope or other silicone based materials to tighten supply coupling nut.

Clean the outside surface of your vitreous china water closet with mild soap and warm water.

Do not use abrasive powered or liquid cleaners which can damage the product surface. Product is Fragile. Over tightening of Lock Nut or coupling nut could result in breakage and flooding. Do not use cone washer with plastic supply line. Do not use silicone sealant based materials to tighten supply coupling nut.



Fill valve will not shut off
  • Water supply is closed
  • Float is stuck
  • Drain guard gets stuck
  • Flapper is stuck open
  • Water won’t shut off in tank
– Turn on water supply angle stop– Loosen fill valve nut and turn fill valve away from back of tank– Clean drain guard– Check chain length and flush valve seat– Turn off water, clean seal inside fill valve
  • Flush Valve nut is loose
  • Flapper is not seated properly
  • Tank connection is not tight
  • Tank connection is not tight   
  • Remove tank, assure flush valve hex nut is tight
  • Clean flush valve seat, replace flapper if necessary
  • Make sure the tank is properly tightened to the bowl
  • Make sure tank to bowl gasket is installed
Poor flush
  • Water level is not set properly
  • Low water pressure
  • Obstruction in the bowl
  • Short flush
  • Adjust the water level set to screw to assure water is at the minimum level line
  • Some fixtures require 20-35 psi to function properly
  • Plunger the bowl and clean the drain line as required
  • Adjust the chain length


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