2019 Malibu Boats, LLC Owner’s Manual • Page 148Never move the trailertoward the tow vehicle.When the trailer is not fullyhitched up, the brakes arenot operational.• Release the coupler latch. The hitch pin should fit easily into thehole. If it does not, this means that the latch is not completelyclosed. It will not close unless the coupler fits snugly over aproperly sized ball. If the hitch pin is damaged or lost, it must bereplaced prior to operating the rig.The hitch pin must beproperly installed andsecure prior to operation.If it is damaged or missing,you can operate temporarily with a one-quarter inch(1/4”) or five-sixteenths inch (5/16”) shank padlock.Never operate without the hitch pin or padlock as thetrailer and contents can become disengaged from the towvehicle, which may result in serious injury or death.To Open the Coupler• Remove the hitch pin from the hole in the side of the coupler.• On the standard Malibu trailer, push the button on the side.(Other trailers do not have the button.)• While holding the button, raise the handle.To Close the Coupler• Place the coupler over the ball.• Lower the coupler.• Close the handle. An audible sound will be heard. If the handledoes not close easily, the ball is not fully within the socket. DONOT FORCE the handle to close as it is likely that the ball is thewrong size and should be replaced.NEVER tow with thecoupler handle open orpartially open. If the handlewill not remain closed, goback through the steps to ensure that it will close andstay closed. If you are unable to get the system to performcorrectly, see an authorized Malibu Trailer dealer forassistance. Failure to get the coupler secure could resultin the trailer disengaging, which could lead to seriousinjury or even death.Hitching Up• The coupler should easily unlatch, but if it does not, check tosee if the ball is correctly sized, or if the trailer is parked on a hill,which will inhibit the ability to successfully open the coupler.• After securing the coupler to the hitch ball, double-check that thehitch pin is properly installed and the coupler handle secure.• Cross the safety cables under the coupling, allowing only enoughslack to enable turning when the rig is in operation.• Attach the breakaway cable under the coupling.• Connect the trailer’s seven-wire connector to the seven-wireconnector of the tow vehicle and check that the lights are workingcorrectly. (More information on the Lights follows in the TrailerComponents and How They Function section of this Owner’sManual.)CONNECTINGTO THE BOATTrailer WinchThe trailer winch is a manually operated device to assist loadingthe boat onto the trailer and maintaining it in position for propertowing. The following information is important in assuring control andprotection for you and the boat:https://www.boat-manuals.com/