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How do I adjust the level my Porta-Dock Truss Dock with winches?

Loosen the set screw. Then unlock the winch and crank the handle counterclockwise to loosen the chain. Place the winch in the lock position again, before loosening the chain further by hand. Crank the dock up until two inches below the target height. Then pull the chains tight and lock them. Continue cranking the dock the final 2” to your desired height. Make sure the chain is tight. Then retighten the set screw. Finally, unlock the winch, loosen a half-turn, and re-lock the winch. Repeat on the opposite side.