I have a 2004 Yamaha Kodiak 450, it has been running fine, but the last two times I started it I had two issues, first the speedometer (digital) displayed motion (9-32mph) while in Park, secondly, when placed into reverse the engine started missing badly, enough so that it was difficult to get to move....obviously something is amiss, any ideas???
Thanks!

 

I have the same issue with the same machine, Is there a cure.