2015 FC250 Seat Bolt Spinning

Did you try and impact?

Try getting some penatrating oil onto it, then pry it up while slowly turning it.

Your insert has spun out unfortunately.

Show us a picture and we will tell you exactly what to do. We are freaking nerds

Not uncommon for the imbedded nut to break loose inside the seat pan's plastic of the Husqvarnas, I've had two do this.

You may have to resort to cutting off/out the bolt as I did. Then reseat the nut imbedded in the seat pan's plastic with a heat gun or careful use of a torch. Its what I've done, twice on two different seats.

They are like nuts imbedded into fuel tanks. You don't want to overtighten them or they will spin and break loose in the plastic. Good news is, once you fix it and are careful not to overtighten..... it wont happen again.

I drilled through the center of the bolt. This released the pressure on the threads and I was able to loosen the bolt. I then secured the rotating insert in the plastic using epoxy.

Grease or use some anti-sieze on the bolt once you get it fixed.