Kohler Cimarron 2-PC Elongated Toilet with EcoSmart Technology, Left-Hand T... - Page 5 - Answered Questions & Fixed issues

Your air vent to the roof for the toilet is simi clogged. clear it. Mike

To open the assembly, first line up the flush buttons with the float mechanism. This aligns tabs on the button mechanism with a slot on the mating surface allowing you to 'pop' the button assembly off with the help of a screwdriver. It will also prevent breaking off the tabs. If you break off the tabs, the button assembly will not lock in place when you reassemble it (speaking from experience).
2. Carefully pop off the button assembly with the help of a screwdriver.
3. Disengage the lever from the valve assembly by carefully prying with a screwdriver (see video).
4. Pop off the lever from the axle on button assembly and remove.
5. With some fine grit sand paper or emery cloth, polish the casting marks off of the axle.
6. Reassemble the mechanism. Assembly is the reverse of disassembly.
http://www.instructables.com/id/How-to-fix-leaking-Water-Ridge-dual-flush-toilet-f/

Typically it's one of two things. Either there is debris (Sand, gravel or hard water deposits) under the seal diaphragm inside the fill valve or the diaphragm has deteriorated. Shut off the water to the tank, take the cap off of the fill valve and remove the diaphragm. If the diaphragm has deteriorated, replace it Kohler #83143. Otherwise, rinse it off, turn the water on just a bit to let it bubble over the top of the fill valve and rinse out any debris. Then with the water trickling, put the diaphragm back in and replace the top assembly. When all is secure, turn the water back on to full.

Usually this is caused by a sticky valve. The "low-tech" repair method is to just thump the top of the valve fairly hard with your fist. The correct method would involve disassembly and cleaning of the valve interior, or even possibly replacement.

I would suggest a new plunger that will seal.

A grommet seal has disolved. You need to turn off the water main and replace or rebuild the affected shut-off valve or faucet. Use a Monkey wrench. .

not really as the flush time is set by the manufacturer in the design what can be adjusted is the water level in the cistern the more water , the longer the flush before the reset ( shut off)action is activated adjust that by the float screw ot water level adjust screw on the inlet stem

are there any floor drains in the room and an unused bathtub or shower? if so the water may have evaporated from the trap and allow the sewer gas smell. try pouring water into all the drains and see if it is still happening. more elaborate problem may be a broken vent stack in a wall.

sounds like the hot and cold lines were installed backwards.

buy cleaning rope snake

You probably have a water flow reducer in the shower head. It is a rubber disk with a few holes in it. Just remove it and put the shower head back on. They are installed at the factory to save our environment. (Mine are all removed)

Overflow? Seal around drain may be good enough for shower, but leaks with a little more pressure from the filled tub. Filled tub may flex the tub and drain components. What about the overflow. I bet some water is going over, but it isn't used for showers. Double check. Paper towels tied in stratigic locations always help me find a leak. Leak makes the towel soak up water nearby. It's most wet at the point of leak.

You will need to remove the tank by locating the long screws on each side of the water outflow outlet. Take those bolts out and then you can lift the tank up and thus you will access to the large gasket.

the fill valve is under constant mains pressure so it will not siphon out. However if there is a problem you can buy a non-return valve from your local hardware/plumber shop and fit it in the line between the cistern tap and the cistern

It sounds like the electronics is failing, Contact Kohler for a replacement.

Contact a local supply house or a big box store in your area.

I would try to repair only if you have the knowledge to do so. It can be tricky and may not be permanent. Weigh the cost of a new one vs repairing it. Toilets generally last a lifetime other than the moving parts.

13 inches gives an inch or so on back of toilet and you need a standerd toilet for the rough in.

Flapper inside of tank is letting water by or flush valve is not stopping water and needs replacing check flapper on inside on bottom it attaches to the chain on lever.

Valve needs to be replaced on inside of tank flush valve is going bad replace it the water you are hearing is water going into the fill tube going into bowl nothing is wrong with that its normal.