New to the site and to Polaris but just got a Scrambler 500 4x4 from my brother yesterday that isn't running and trying to get it going. Has been sitting for 6 months but ran great when he parked it. He sprayed some starting fluid in it yesterday and it fired right up but couldn't get it to run on it's own. The fuel valve is in the on position and when the hose is disconected at the shut off it runs out freely. I tried to pull the spark plug out to see if it was wet but couldn't seem to reach it with a socket and guessing there is a special tool for this? I disconnected the hose from the fuel pump and it turned the motor over to see if fuel came out but only a very small amount dripped out. Fuel filter is clean and not plugged up either. I'm guessing something is plugged up in the fuel pump and preventing fuel from reaching the cylinder. Any suggestions or experience with this issue would be greatly appreciated. I did drain the tank and put new fuel in. Any suggestions would be greatly appreciated. Also, how do you adjust the rear spring to be stiffer, seems to set pretty low when i get on it and could definitely be stiffer.