I'm having issues with my secondary clutch belt riding high on taking on the housing. It is a 2012 artic cat mud pro. How can I correct it?

Sounds like a failed voltage regulator.

17V on battery when engine is started

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Honestly... A factory trained professional,,, electronics and EFI are best left to the pro's.

Flush it with what>>??? NO!! Why?,, Did you sink it? Drain the oil and let it drain for several hours.. refill it with the correct amount of the correct oil... ride it until it gets hot ..then for about 30 more minutes, and then change the oil again..refill with correct amount of recommended oil and you should be fine..

clutch springs are weak . may just be build up w/belt dust. belt getting worn also can cause.

According to the information I have gathered from this computer, your ATV has a single cylinder.

M7 05 won't rev out properly [Archive] - SnoWest Snowmobile Forum

www.snowest.com/forum/archive/index.php/t-331581.html

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Here are the service manuals for all Arctic cat ATVs
Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

sounds like the throttle cable is sticking insde the jacket.
here are the service manuals for all Arctic cat ATVs

Parts House Lawn Mower Parts and Chain Saw Trimmer Parts

Here are the service manuals to all Arctic Cat ATVs

Parts House Lawn Mower Parts and Chain Saw Trimmer Parts