Honda Fourtrax 300 starting problem

Hello everyone, this is my first post to the forum. I have a Honda Fourtrax that will not start when you push the start button. no kick start. However it will start if you jump across the two posts on the sylenoid. thus far i only sprayed wd40 into the start and kill switches. any suggestions?

My guess is that it is either the start button itself, the wiring that goes to and from it, or the solenoid is not working anymore. I would start at the solenoid, if you have power at the low current feed wire (the small one) on the solenoid when you push the start button, the solenoid is your problem. If not, I would start at the battery and trace back toward the solenoid and see where you lose power, that will be where you find the problem.

I had the same problem with my 300EX. I bought a brand new solenoid and that did nothing. After that I pulled the starter off and cleaned it out (I had a bad O-ring on the starter, so water had got in). Has worked perfectly ever since.