I have an 02 Banshee that my son rides in the dunes. Mostly stock and reliable, pretty well used though. Last dune trip the quad got stuck got stuck in 3rd or 4th gear. No amount of fooling with it in camp would shake it loose. Being a gearhead that can fix just about anything, but with not much quad experience, I took it all apart down to splitting the case. Probably farther the needed in hindsight, oh well.
I don't see any obvious issue in the gears or shift forks. It seems like the pawl that engages the "shift star" might be sloppy and not always pushing the pins enough. Sound like a known wear issue? Other possibilities?
Any reccomendations on improving things when replacing parts? I plan on doing the clutch and re sealng the case now that its this far down.