2014 RTV1140CPX Trans Issue?

[AckServ]

2014 RTV1140CPX
Unit drives OK in Low and Reverse. Very little movement in M and H.
Unit has been sitting for a few months, was fine before that.
Filters and fluids have maybe 20 hours.
Any thoughts before I dive into it?
Thanks!

 

[North Idaho Wolfman]

Does the motor have rpm or are they lagging?
If the motor is reaching full RPMs yet it isn't moving then it a drive issue.
If the motor is not reaching full RPM's then it's most likely a fuel or air issue.
Being that it was fine before it was parked would lead me to a fuel or air issue.
Wouldn't be the first time a critter has packed the air cleaner with debris.