After a few years of use... It was hard to start...
What I had was a stuck Piston ring on 1 or both cylinders...
A way to inspect... is to pull the exhaust Y pipe at the block.
You might be able to free up the ring(s) by 'poking around'
or adding a 'chemical cleaner'???? Not good....
Worst case is disassemble the motor at a Polaris Dealership...