I have a 2017 Pioneer with low hours (about 300); its been running great - (my main workhorse on the farm) until recently when the machine tops out like the seatbelt switch is engaged. I checked the seatbelt connection and the wiring and even installed a seatbelt override plug, but still experiencing the same issue. The dash lights up correctly indicating when the seatbelt is engaged or disengaged.
The behavior is as follows. The machine starts and runs normal until you begin to rev and go over 10-14mph - then no power. It's to the point where the machine will not upshift traveling on an incline, but will when going downhill, but still bogs down @15mph or so.
I changed plugs, air filter, and pulled the spark arrestor off the exhaust - same problem.
Any thoughts would be greatly appreciated.