2007 Arctic Cat ATVs 400/500/650/700 Service Manual, Page 448Get this manual
4Lock the seat into position by pulling the two latch handles to the rear and rotating them to the horizontal position CF227A
3To lock the seat into position, engage the two front mounting lugs into the mounting rack; then holding down firmly on the front of the seat, push the seat forward until the rear tabs engage the rear mounting latches