Owners manuals are pretty generic. Look in the Documents section at the top of the page. You might find something there. Not knowing what year the trailer is I wouldn't hazard a guess.
When asking questions about a rig, it's important to post all the info on it. Make, model, and year.
If you are interested, there is also a file there for doing a PDI.
2008 Cruiser CF26RK
2013 Ford Eco-Boost
Heavy duty payload - Max tow