Holidays and Traditions How do you fix a Polaris Ranger seat? How do you put a carseat in a Polaris Ranger? Using A Car Seat In The Polaris Ranger You can use a razor knife or something similar to cut the stitches between the seat belt and the flap, which will let you tighten up your child's off-road car seat just like you can in an automobile.Feb 2, 2020