Instruction: Generate an answer to the question by utilizing the information contained in the document.

Input:
Question: I just bought this machine and it leaks from the seals.  It is a steady stream.  How can this be fixed without returning the unit?
Document: Can't pull it back more to suck that up without another stream. Frustrating. It also left stripes on my carpet. I figured out the culprit on this. Comparing the brush head of this new to my old, I see the new brush heads overlap each other completely creating those stripes. My old model barely overlaps and no stripes. I'll be returning this to the store and sticking with my old model.
I have tried calling Hoover but was on hold for nearly an hour before I just hung up.I really wish this had been a good machine. But for all of you looking for help with leaks please know that I have gone above and beyond both on Hoover.com and on Google looking for a solution and there really are none to be found except for one guy who literally went out, bought epoxy to affix to the seals, and then had to sand it to work correctly.
The machine worked fine until after the first time I plugged in the attachment. It leaks a stream out of the solution port now and is useless for floors. Save your money, look elsewhere.
There is no way that tank seals could last even if they were made of titanium.Second, the unit is very difficult to maintain. You can't easily disassemble the brushes without breaking the clear plastic cover. Then after a while the thing starts leaking from the bottom. I can't figure out what's wrong with the thing but you can guess - EVERYTHING. I don't have much experience with other steamers but this one is really bad. And for the price $250-300 they could have built something better.
I was also pleased with the carpet cleaning. I really like the fact that this unit did not leave carpet balls all over like the Bissell did. I bought my unit from Lowes with a two-year extended warranty so if it ever has a problem, I take it back to Lowes and they get it fixed.
The clips that connect the hose to the machine seem to be especially fragile. I must say, the machine is powerful and did a nice very job on one of the area rugs. Unfortunately, after about 15 minutes of use I noticed a couple of drips coming out of the back of the unit. The drips turned into a stream and in a very short time the stream became a gusher.
We'v had this Hoover for about 2 years and Im ready to junk it. After the first 3 or 4 cleanings, I thought the unit worked rather well, but then the problems started. First the scrubber wheels stoped spining. The brush drive uses plain steel gear pins that rusted due to the fact they are directly exposed to the fluids entering the machine! After cleaning and relubing these parts, it was working again. Then the leaking started. I replaced the rubber O-ring seals and it still leaked.
I have used a professional company for years to clean my carpets. Some areas went without as they were out of the way and my furniture had to be stored somewhere during cleaning. I finally broke down and bought this unit for those neglected areas. I am amazed at how well this works. Two neglected areas where the dogs like to go and sleep were getting really gross.
It didn't take long for me to experience what others experienced. I pulled the main unit out of the box and the lower latch for the dirty water tank was broken off. Since I bought it over month before I used it, I couldn't return it without paying shipping.I decided to use it to clean a medium sized rug and 2 very dirty couches right before Christmas. It appears to have worked well. It didn't use too much water. Couches were damp but not soaked.
I bought this carpet/floor cleaner, on April 4, 2012. It is now May 14, 2012, and I just got off the phone with Hoover's customer service. The clean water tank has two valves that the unit pulls the water and cleaning solution from. For me, the valves began leaking on the first use! What started as a drip is now a steady flow of water from the leaky valve.
Answer: There are two parts to the seals on the clean water tank,  the spring operated valves and the rubber seating seals.  The spring operated valves close when the clean water tank is removed from the machine allowing the water and solution tanks to be filled. The seating seals around these valves are supposed to keep the liquids contained within the machine when the tank is installed.  The spring valves can stick and may be prone to be held open by small particles such grit or plastic shards left by the factory.  You can exercise the valves when the tank is off the machine and empty by pushing them gently up and down from below with finger.  You might also try this with some water in the tank to test whether the spring valves seal.  The seating seals around the valves on the bottom of the tank may be prone to collect dirt, tearing or folding.  You can only really inspect them to ensure that they are clean and not folded up in some way.  If the machine is new possibly there is some excess plastic left by the factory that needs removing.  You should also make sure that the plates on the machine that the seating seals sit on are clean and not scratched.  These plates are the flat round areas on the clean water tank shelf.Lastly, the tank must seated properly and be locked in place with the tank handle.  This opens the spring valves and compresses the seating seals.  If the tank is not placed correctly it is possible that the seating seals will not seal against the plates but the spring valves will be held open.  Wiggling the tank slightly when its locked in place might fix that.In my case I had the opposite problem of the water valve not opening at all until I exercised it.This is not a recommendation since it is not mentioned in the manual but I suspect the seals may benefit from a light application of waterproof silicone grease such as you might use on kitchen faucet O rings.