My grizzly 600 has a problem when in reverse. Forward, it has no problem. When in reverse it bogs and sputters as soon as you hit the gas. I have recently replaced a bent shifter bar becuase I thought that was the problem. It is almost like the reverse rev limiter is kicking in to soon. It acts like your stuck in a mud hole with full load on the wheels not being able to spin the tires. Any ideas, mechanical or electrical?

 

It has a 12km/h limiter, and if that fails then a backup RPM limiter will kick in.

 

the grizzlyhas a rev limiter in reverse