I am having issues with my son’s 1999 25th anniversary TRX90. Its an auto trans (no shifter) with electric start. The bike starts and runs great motor wise. The issue I am coming across is that when he rides it there is a loud clacking sound coming from it. After closer inspection the sound is coming from the front sprocket area. But can’t tell which side of the bike it being produced on.
So I went and found a service manual for the bike but it doesn’t have the model we have. No mention of the automatic, only the manual shift bike is in the manual. So I went ahead and pulled the clutch cover off and was able to move the clutch back and forth to find the spot that is creating the noise. Now the bad news is that its def somewhere in the gearing inside the transmission. I made a video of me moving the clutch and reproducing the sounds.
Any help with pointing me in the right direction would be awesome. I rather not take this to the shop. I like to work on these things myself so any insight would be greatly appreciated.
