Hoover steamvac when I use it it leaks out of bottom. when it off an water in tank leaks out of bottom,when its off an I pull the triggar it flows big time out of bottom. tank doesnt leak when off sitting with water in it

Let me start out with an apology. I did not ask my question very well - and you did not answer it as I needed.
If you wish, we MAY be able to communicate in your native language. We can do most indian languages, Turkish, Ukranian and some Russian - as well as Spanish. If any of those are easier for you - please feel free to use any of them.

The Machine storage tanks are 2 - one clean water, one dirty water.
I understand that, when OFF, no leaks happen.
I understand that when on a leak comes from "the side". Also, water comes from the bottom.

So, water comes out near the bottom brushes (even without trigger). Then, with trigger, MUCH water comes out near bottom brushes. Am I correct so far?

Water out the side concerns me. I am guessing that the bottom of the clean storage tank may have a small leak.
I am also guessing that the trigger valve (located in the small opening behind the black rubber seal that the clean water tank rests on) is not closing all of the way - or is broken (cracked).

Can you please remove the clean water tank and inspect the trigger valve with a torch (flash light). Can you see it open/close as you operate the trigger? Is it broken, cracked, or dirty?
If yes then it must be replaced. If no, the the storage tank is bad and must be repaired.

You inspect all of these things and you should be able to determine the failure. THEN, I an help you repair the failed item.
-Jim (Raleigh, NC - USA)