you are on the right path. need to figure out where that neutral sensor is and see if you can get it to work.
I have 2 2008 TRX 250 EX's which hadnt been ridden in 2 years. Each have the exact same symptoms. I replaced the batteries, drained / replaced fuel & cleaned carbs. The starter button made no noise whatsoever (no solenoid "click"). However, I got started by jumping solenoid. I did replace the solenoid, but still no sound from starter button. Now...neither are showing me a neutral light, although one of them used to start up, even without the light (had to be in neutral though). I suspect there is something in the neutral check that is preventing the start, but looking for troubleshooting ideas.
Ronnie B
you are on the right path. need to figure out where that neutral sensor is and see if you can get it to work.
88 x 2, 89, and LSR TRX250R's, 2x 88 blasters, 2x 85 350x's, 87/85 TRX350XR hybrid, 88 zilla, 92/87 Hybrid LT250/500R, 92CR250, 2014 DRR70, 2010 APEX RM85 Shifter Hybrid