I have a problem with stalling on my 07 500 EFI Sportsman Hunter. Usually happens when the ATV is stopped and I try to excellerate from a stop or shift to another gear. I've brought it into the dealer and had them reflash and adjust the throttle without any improvement.

ATV is stored at about 9,400 ft ASL. It is equiped with the high altitude software.

Any help or suggestions is appreciated.

 

what is it idling at when it neutrual? does it try to creep ahead when you try to put it in gear?

 

I'll have to get back to you on the RPMs when ideling. I store ATV at a cabin. I'll be up there next this coming weekend.

It seems to idle fine. I have not had a problem withh it stalling from a standing idle, only have issues when shifting or accelerating from a stop.

Have not noticed any issues with it wanting to creep ahead once in gear. I have noticed a slight problem with difficult shifting when it is cold, but once warmed up, it seems to shift OK. All fluid levels are good.