2014 570 RZR LE Stock with Versa Track Turf Mode and Engine Braking system, around 400 miles on the odometer.



Description of problem:
After riding for a few hours on road/trail with little or no hills at 5-40 MPH with transmission in 2 wheel drive then when trail becomes steep and switch to On-Demand 4 wheel drive and low gear at times. After descending steep down grade and Engine Braking System engaging numerous times, begin hearing what sounds like “thumping” on level ground at slow speeds. Increase speed and it appears to stop, but if slow down it starts again. Then If I run at 20-40 MPH for a period of time on fairly level road/trail and slow down problem seems to have gone away until another steep downgrade is encountered.

Anybody got any ideas what the problem is or is it going to require a visit to the shop?

 

First thing that come to mind is the belt. Not unusual for a laminated belt to separate and slap the cover.I'd check there first.