Before you decide to replace the wax gasket, first try the following :-

1. Try to gently shake the bowl and if it does wiggle you can tighten the floor flange bolts GENTLY as this is China you are working with.
2. Double check the perimeter around the base of the toilet to make sure it is actually wet and not from someone missing the mark.
3. If your area has a lot of humidity and there is either a slow leak past the tank bulb (flapper) OR heavy usage, this could also account for the water marks on the floor.

1. Shut off the water supply valve located on the lower left hand side of the tank ( normally).
2. Flush the tank and hold handle down to drain out as much water as possible.
3. Disconnect the water supply hook up from the LARGER upper nut (The lower one connected to the bottom of the tank) as the upper "lock nut" is only for the installation of the ball cock.
4. Looking at the base of the toilet hopefully you will see two brass nuts about 1/4" in dia. Loosen each one completely. If they are covered try prying off the plastic caps with 2 flat head screw drivers, one on each side.
5. After these nuts are completely off, gently pick the toilet and tank straight up so as not to spill the water in the bowl. If you have a wet dry vacuum use it.

   to not only remove the water left in the tank after flushing.

   BUT any in the actual bowl as well.

6. Remove the old wax gasket with a putty knife and then gently remove the existing floor flange bolts by sliding them to the widest opening in the brass floor flange.

   IF YOU have plastic drainage piping including a plastic floor flange you are much better off calling a journeyman plumber.

   If it is a brass floor flange, you then take up these old bolts and install NEW ONES.

   

   Try to get Hercules brand or SOS, nothing imported. You should also consider a deep seal wax gasket (the one with the plastic horn).

7. When replacing the new bolts into the slotted floor flange try installing them at the same roughing * measurements as the existing was.10" 12" or 14" rough.

   (* roughing is the center of the toilet bolt holes from the finished wall)

   Once you set this measurement you can place the deep seal wax gasket in between them and push down slightly so the horn sets in the lead bend.

Put slight pressure on the toilet bowl to get the wax to squeeze slightly and this way the bowl will rest on the floor.

Tighten the bolts evenly VERY, VERY, VERY carefully just until they are snug. You can try moving the bowl side to side and if it doesn't move STOP making up on these bolts.

You can, hopefully, re attach the water supply nut and open the valve slowly checking for leaks around the water supply connections. When the tank is full flush it checking all around the base for leaks. If no leaks you can now pour your wet dry vacuum water into the toilet bowl.