Question about Toto C743S01 Cotton Drake Round Bowl Only C743S

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I have two new Drake toilets that were installed. The first one is working great but the second on is leaking from the bolt & nut that is connecting the tank to the bowl. Can You help?

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It sounds like the tank bolts are not sealing. Make sure you used the rubber washer on the inside of the tank under the bolt. Also make sure bolt is fairly centered before tightening. You can purchase a set of tank bolts from your local home improvement center that contains rubber washers that will seal on both the top and bottom of the tank. In proffessional installations this is what I do. I hope this helps. Please vote on advise. Thank you.

Posted on May 13, 2010

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How can I remove the Flushmate 503 to access the mounting screws at the bottom of the tank?


You will need to remove the china holding tank from the toilet bowl by removing the nuts on the underside of the china tank.

After you have the tank off the bowl, remove the two plastic lock-nuts used to mount the Flushmate into the china tank and slide the Flushmate out of the china tank.

After you install the new tank-to-bowl bolts & washers, reverse the process to reinstall the Flushmate unit and remount the china tank.

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The bowl is cracked and is leaking down the drain. You will have to replace it. It may have cracked if the bowl hold-down bolts were overtightened, or the bowl was not able to sit flush (pardon the pun) on the floor. If the bowl rocks when it is first installed, instead of tightening the hold-down bolts, use a couple of tapered shims under the edge of it, then caulk to fill the gap and hide the shims.
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I tried to unscrew a toilet seat on a lowboy now the screws won't screw or unscrew.


If the screws won't turn either way, they're probably "cross-threaded" or stripped. You'll have to unscrew them with force. I'd use a ratchet and socket on an extension (you might want to use a deep socket, since the bolts often extend an inch or two past the nut).

Once you get them off & can remove the seat, head to the hardware store or Home Depot & pick up a new set of bolts & nuts. They're very inexpensive. When installing them, make sure that the nuts screw onto the bolts with finger pressure alone, before taking a wrench or pliers to them.

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1 Answer

My toilet only leaks when flushed. It seems to be coming from the connection at the tank. The tank is not cracked and a new hose from tank to shut off valve has been installed. The toilet is only 4 years...


If you have 2-part toilet, then tank is attached to bowl with 2 bolts.
Look inside tank and you can see bolts with rubber washers located on either side of flush valve.
The 2 bolts hold tank and bowl together and between tank and bowl is a washer called the spud washer.
So spud washer could be leaking ... or 2 bolts could be leaking.

1) If bolts are leaking, there is usually dripping all the time, and drips are visible on bottoms of bolts
If spud washer is leaking, then tank could leak only when tank is flushed.

2) First thing to try is tightening nuts on the 2 bolts. Nuts may be loose. Tighten nuts a few turns, and check if toilet still leaks.

3) To fix a spud washer, you usually need a new generic one from hardware store.
Newer tanks with 1.6 gallon flush have special sized spud washer.
geno_3245_105.jpgTank is upside down and spud washer is fit over flush valve

If you cannot find new spud washer, re-use old one and smear retorseal on it during re-assembly to make sure it seals. Rectoseal is good for many home plumbing repairs. More about that in a moment.
geno_3245_104.jpg

4) To take apart tank: Disconnect supply line to tank. Empty water out of tank. Remove nuts from bolts. Lift tank off. Wash out tank with hose. Make sure there is no sand or sediment left in bottom that might clog up flush holes located inside bowl after tank is re-assembled.

5) Remove old spud washer, and put new one on. Do a google-image search for 'spud washer' if you need more photos. New spud washer fits over flush valve. That's it. And then reassemble tank.
If you want to apply rectorseal to washer, put washer on as shown in photo above. Then smear-or-gawm rectorseal over area of washer that sits on bowl. Rectorseal will make sure there is no more leaking.

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