Tools needed: Adjustable wrench and phillips head screwdriver
For Kohler (and possibly "will fit" American Standard, Eljer, or Universal Rundle) - If the anchors have been removed or are missing, then you will also need a #84999 Anchor Kit. You can purchase a #84999 anchor kit here = $54.35
For Toto - If the anchors have been removed or are missing, then you will also need a #THU651N Top Mounting Seat Hardware Kit. You can purchase a hardware kit on our page.
Make sure anchors are installed into the bolt holes of the bowl. If anchors are missing then install the anchor kit. Once installed the anchors are wedged against the inside of the porcelain holes. For Toto kits, you will simply need to push the rubber anchors into the holes in the top of the bowl, then skip to Step 6.
Anchor kits include a bolt, a lock washer and a regular flat washer to set the anchors in place. Only one set of each is included because it is used for both anchors and once the anchors are set, the bolt, lock washer and flat washer are discarded.
If you need to install anchors, use the tool that comes with the anchor kit to hold the anchors from slipping.
Put the flat washer on the bolt and then the lock washer. Place the bolt into the anchor and begin to hand tighten the bolt clockwise.
Using an adjustable wrench, continue to tighten the bolt in a clockwise motion until the bolt is snug onto the top of the anchor tool. Once the bolt is snug, use the wrench and un-tighten and remove the bolt, flat washer and lock washer using a counter clockwise motion. Repeat this step for the other anchor. Once completed, the anchors should now be firmly secured inside the bolt holes. The bolt, flat washer and lock washer will not be used any further. Discard or put into your bolt collection.
If you are installing the Bemis toilet seat with Easy•Clean & Change™ Hinges you will now use the HK36 hardware kit (shown below) to complete the seat mounting. The mounting posts/bolts and long nuts kit included with the Bemis seat will NOT be used — the HK36 hardware kit is identical in size. If you are using a Toto seat hardware kit, use the bolts provided in that kit and NOT the bolts included with the HK36 kit.
Again, do NOT use the mounting posts/bolts and long nuts mounting kit that is included with the Bemis seat. These parts are used for normal installations on toilets with easy access to the bolt from the underside of the bowl. All you need is the HK36 hardware kit.
Install the HK36 hardware kit. Put one of the bolts with the phillips head through the quick-change mounting post and slide the bolt into one of the two anchors. Tighten clockwise by hand until it becomes too hard to further tighten by hand. The bolt with the phillips head is the same size bolt as the "setting" bolt as shown in Step 2.
Use a screwdriver and continue to tighten the bolts until the quick-change post is snug against the porcelain. Be careful to not over tighten.
Follow Step 8 and Step 9 and install the other quick-change mounting post into the other anchor. Once they are both snugly installed, the top of the bowl should look like the picture shown below.
You are now ready to attach the seat. Standing in front and facing the toilet move the locking hinges on the toilet seat to the left. Gently push both hinges on to the quick-change mounting posts until the bottom of the hinge is touching the porcelain.
Now, simply move the locking hinges back to the right and the hinge will lock onto the quick-change post, securing the seat. Pat yourself on the back and admire your handy work!
Please note: The method presented here for installing these seats may not be suitable for every model of one-piece toilet. If you are unsure if a particular kit will work for you, please contact us prior to ordering.