Recently one of mine stopped, didn’t return to park. The other wipers worked but didn’t park. When the first one stopped it blew the park fuse located behind the helm on my 25 SC. To remove the motor you need to remove the wiper arm, battery terminal/wiper arm puller helps, there is also a small set screw on the arm holding it to the motor. Remove the inside screw and the motor comes out, there may be a spacer behind it. Note the wire connections before you completely remove it. If a wire came loose that’s the problem. If not remove the screws on the back and open it up. The motor should turn freely by hand, counter clockwise. If you need a new motor they are available online for around $200.00.