Starter problems? I think!

okay well i know it has been a long time since i posted anything, but this morning i went to go start up my atv and it wouldn’t start so i thought that it was the battery. so i went inside and grabbed my heavy duty charger, put it on the 50 amp emergency start option and went to try and start it which i have done numerous times, and then all of a sudden i started to smell something burning. so i then turned the key off unplugged everything and after some investigating i found the little rubber boot actually started to burn you know the little red boot that goes up and over the starter post where you connect the + lead wire coming from the solenoid. so i then thought to myself no big deal i will just grab this brand new starter that i have had since about Jan. and put it on. so i connected the new starter but before i put it back in i said to myself let me go ahead and try it just to make sure before i go putting everything back together. And wouldnt u know it this brand new starter did not work.so then i checked to see if i had 12 volts at the battery which i did i actually had 12.92. so then i went ahead and tried jumping the posts on the solenoid which that had no effect either. so then i even went as far as connecting the lead + wire from the battery directly to the other post on the solenoid and still no dice.so i then took my manual out to check and see if i as getting 12 volts up at the terminal board which i was at the red/white wire. so then i checked to see if i had 12 volts at the white/red wire which at first i didnt until i realized that i had to have the start button pushed, in order to get the 12 volts which i also had and then i checked to see if i had 12 volts on the little wire coming from the solenoid which i also had, also checked the ground which was fine. now heres the thing that i dont understand and maybe you guys can help me understand now when i push the start button, shouldnt i get 12 volts on the other solenoid post because i dont get anything when i push the start button. i just want to make sure i buy the right thing. because i find it really hard to believe that this starter is bad even though it might very well be bad because i even tried bench testing and it did nothing. so any help will be great.
THANKS IN ADVANCE
RUBEN