hello im new to the forum. I just bartered for my first atv. it is a 92 Polaris Trail Boss 2x4 250. it does not have front brakes. the rear brakes are down by your foot. when I press down the brakes do not engage. I have changed the pads but they still don't work. it has a knob to adjust brakes but it still doesn't work. i didn't see any brake line. can someone help me out? is there suppose to be a brake line on this model? how can I get brakes to work?