I have an 88 TRX350D that I have owned for many years and use on my small farm. Other than a cam chain and routine oil changes I haven't had to do much to it. Recently, I have noticed in the higher gears under acceleration, the clutch seems to slip just a bit. My father has a 300 2wd about the same age. He recommended I adjust the clutch before doing anything more drastic. Before using it to take my 5 year old back to the pond this weekend to catch some fish, I got into my service manual, and saw that I needed to remove the clutch adjustment cap (which broke tabs when I removed it). I loosened the nut with a 14 mm socket, turned the adjuster counterclockwise until resistance was felt and went 1/4 turn back. When I went to tighten the locking nut, it never tightened back up. It feels like it is stripped. Can anyone tell me if I try to split the nut and replace it, will that be possible without something coming loose inside the cover? I am starting to wonder if I should look into having it taken in for a complete clutch job. With the locking nut as it is, now the atv will not move at all, so I am going to have to do something. Thanks to anyone that can offer some info!