Instructions for Model GS-R2 Gullsweep® Retainer Kit All Gullsweep have a spring retainer to prevent a Gullsweep from falling off the center mounting pin and being lost overboard. Gullsweeps do not fly as they do not have any lifting component; and they do not float either. A retainer is not only for peace of mind but can prevent a lost Gullsweep in that unforeseen situation. To install, slip retainer spring down on to center mounting pin with retainer hook up. Put Gullsweep on mounting pin and press all the way down so it is resting on the center pin. Adjust the retainer spring so it is in proper place over the hub retainer ring with a minimum 1/8" clearance above the hub retainer. The spring should not touch the hub or the retainer ring. (See diagram). To remove, pull back top of retainer spring and lift Gullsweep off mounting pin. Spring retainer can stay on the mounting pin, however the pin should be removed if it can be dangerous to anyone on the boat.