Have a similar problem with a 01 trx90. It has absolutely no spark. I habe replaced cdi box, coil, and stator, still no spark. My grandson was riding and chain popped off and jammed the gears. He tore 2nd gear out. I replaced the gears. Before i tore it down i ran it just to make sure it was the gears that was bad. So, it ran fine before i tore it down. Put everything back together and now no fire. I have double and triple checked the timing and have even tore engine down again just to make sure everything was right. Now i am stuck and can not figure out why i can get no fire. Any ideas would be greatly appreciated. My grandson will love you forever. Thanks.
My 4 year old grandson, doing a fine job. Riding his trx 90. He started riding at 3 and learned to drive on my 650.
