My 2007 500 HO X2 recently started running rough at idle and ocassionally dies. Unit only has about 350 miles on it. Other times, it will run fine. Any ideas where to start?

 

Yea take a look at the idle screw by the carbarator and turn it one turn clockwise and see if that helps or get back to me.

 

More likely than not, your throttle adjuster is loose and needs to be re-adjusted. You have an efi, you do not have a carb. There is a cable that is attached to the thumb throttle. follow that cable a few inches towards the headlight pod. Now pull back the rubber sheath that is over the little bulges in the cable. Here you will find the cable adjuster.

 

What jbbooks says. I don't know why the dealers don't show this to new buyers, every new Polaris will have to adjust this cable within a few hundred miles. I did on both my 2007's while out on a trail. The owners manual will cover this, it's real easy, if you have ever had to adjust the brake cable on a bicycle it's the same type system where the wire gives over time and you have to make it longer.

 

<div class="FTQUOTE"><begin quote>Originally posted by: jbbooks

More likely than not, your throttle adjuster is loose and needs to be re-adjusted. You have an efi, you do not have a carb. There is a cable that is attached to the thumb throttle. follow that cable a few inches towards the headlight pod. Now pull back the rubber sheath that is over the little bulges in the cable. Here you will find the cable adjuster.</end quote></div>

X2 (pardon the pun!) I've got the '06 model and I had the same thing happen right about the 300 mile mark with my X2. Adjusted the throttle cable and haven't had a hitch since.