HAve to hold the flush handle down for several

if the flapper is on a chain, you just need to shorten slack on chain to handle.

I had this issue as well with my toilet. My chain was unattached and had been sucked down the drain under the stopper valve preventing the toilet stopper valve from completely closing and causing the water to continually run. After re-attaching the chain I noticed when I flushed the toilet that the handle did not rise again until I manually pushed it up. After readjusting the chain to a tighter position where the chain was not floating at all but instead holding the stopper valve in place I again flushed to check the reaction. This fixed the issue of the water continually running and also the handle not resetting itself properly.

Here is the steps I took to resolve my issue:

Step 1: Remove the lid off of the tank.

Step 2: Check to see if the chain coming from the Toilet Handle to the Stopper Valve is loose, unattached, or broken.

Step 3: Flush the toilet and check to see if the problem has been fixed. If not readjust the chain to a different position and flush again.

Step 4: If all is resolved replace the tank lid.

Other possible things to check:
Check the Float Ball to see if it's Half-way or more submerged in the water. If it is it needs to be replaced.

I hope this helps!

lift off cover and adjust =shorten length= between flapper and handle lever

Try holding the handel down for a few seconds each time you flush.

Some of these come with a flapper/flush valve that is made to operate in partial or full flush. Look at the underside of the flapper. Is it a cone shape that has a pencil sized hole in it (or two)? This cone is supposed to keep the flapper afloat during the flush, but the holes allow it to flap back down early. Its a pretty cheezy way to pass the low water requirement, but they get away with it. If you hold the flush handle down for a few seconds (until the tank empties) you will get a full flush, but only when you need it. Or you can just buy a replacement flapper that doesn't have the hole in it. They are cheap and easy to replace, but you will use more water.

This toilet is a Water Sense toilet and it only uses 1.28 gallons per flush and no more. The tank is never going to completely drain with this low flush toilet. It is designed that way. Make sure the tank is filling to the fill mark inside the tank. If not adjust the fill valve until it does. Federal law says that a toilet can use no more than 1.6 gallons per flush. If you can take this toilet back and get a refund I suggest you do so and buy a Toto toilet. They are the best flushing toilet on the market. Watch it in action. http://www.youtube.com/watch?v=CmuzFve6O4k&feature=related

This is how it is meant to work!
Short push of lever for small flush, push and hold lever for full flush.

One of two things is the problem. First, make sure that you have a tight chain with little slack. If there's too much slack, the flapper won't catch in the passing air to stay up. Second, the flapper is not correct for that style of toilet. You might want to look into purchasing a new Kolby filter that has a removeable cone in the center. Move that cone to 12 o'clock to allow the maximum amount of water to run through the flush valve. If the flapper you have now is flat, it needs to have a cone in the center on the underside.

Open the tank and examine the linkages between the handle and the flapper. If the handle is sticking, it sounds like there may be either mineral buildup or a stuck chain.

You have two issues inside of the toilet tank. The holding down the button is caused by your chain not being tight enough from the handle to the flapper. Take the slack out of that and replace the flapper. The second is that you need to replace the fill valve. This is what is making the noise when the tank is being refilled, and will have to be adjusted after it is installed.
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