The bar goes through the "eyes" of the lower arms of the 3 PH and hooks under the 2 short "arms" on the front of the ballast box. When you lift the lower arms of the 3PH, the "legs" protruding from the bottom of the ballast box brace against the underside of the lower arms of the 3PH. Sounds more complicated than it actually is. The system is quite simple and doesn't require a top link. Unfortunately took mine off for the season (to install snowblower) or I would try to post a photo.