How do you change the back brakes on a 1991 polaris 350 liqued cool?

To change the back brakes on a 1991 Polaris 350 Liquid Cooled, first lift the rear of the ATV and secure it on jack stands. Remove the rear wheel, then detach the brake caliper by unbolting it from the mounting bracket. Replace the old brake pads with new ones, ensuring they are properly seated, and reattach the caliper. Finally, re-install the rear wheel and ensure everything is secure before lowering the ATV back to the ground.