Just thought I would post this info to help out any teryx owns.
My Teryx has been down since early last spring. Just would not start anymore, so I parked it for the summer as I have been riding my Harley ALOT. Just got around to tearing into it and found the intake valves on the rear cylinder were stick about half way open. I could take a screw driver and LIGHTLY pry up on the rock and it would pop very loud. The valves would now be closed all the way.
I have tore it down and have the head completely off. Guess I will be looking for new valves but this is what I have also found out. I did some research and found there is a huge number of people having valve problems. Seems Kawasaki made them way to soft. This is causing people to have to adjust a lot and can also cause the tops (or stems) to mushroom. I dont know if they have changed material in the newer units as mine is a 09 but if they haven't then those of you with the 12 and 13's had better keep an eye on things. I hope this helps others to prevent any extra expense.