I have an 05 Yamaha Bruin 350 Auto 4x4 and every time I go in water even a few inches deep and get some(not a lot of speed) my engine begins to "choke and stutter" and it begins to lose power until I let go of the throttle. I've never pushed it more than that. Could there be a hole in the exhaust system? Any information is appreciated.
I cant say that i know the answer to your question but id recommend that you check the under side of your ATV for any holes, and if ananswer does not arrise try to contact your local dealer.
Sorry Cant Realy Help.