Trying to fix a trx125 for a friend. Will not start. This trx 125 just had the head done at the bike shop and I rebuilt the carb. Getting a spark. Good compression. Not able to get alot of gas to the plug. I get a backfire out of the muffler when I used starter fluid and advance the timing. One of my friends said it could be that the roter is 180 off this might of happened when the head was reasembled. I still think it could be the carb because I had it running for a 30 seconds with my carb off of a atc90 but had hooked to my car battery and had to crank on it for a hour. Could the engine run 180 out ?? How hard is it to reverse the rotor on this? Any ideas?? This is the first bike or for that mater any engine that has ever kicked my butt!!!
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