Coupling To The Tow Vehicle Disconnect the breakaway brake switch lanyard. Disconnect the safety chains from the tow vehicle. Move the spring-loaded receiver lock plate locking pin to the OPEN position. Rotate the lock plate to a position that permits the gooseneck ball to exit the 76 receiver. Before releasing dropleg jack, make certain ground surface below jack base will support the trailer tongue load. Rotate the drop leg plunger pin handle so that the plunger pin is released from the drop leg. Push down on the drop leg base with your foot to place a drop leg to the desired lowered position. Rotate the plunger pin handle so that the plunger pin is attempting to engage the drop leg. Slowly raise your foot, permitting the drop leg to rise. The plunger pin will engage a hole in the drop leg. ! CAUTION The drop legs are heavily spring loaded in the lowered position. They will rapidly return to the upper position when released and can inflict serious bruises, scrapes or pinching. Keep your feet, shins and hands well clear of the drop legs and drop leg bases when releasing the drop legs. Always wear shoes or boots while performing this operation Be sure the plunger pin is fully engaged. Push it in by hand if necessary. The bent part of the plunger pin handle must be touching the plunger pin housing. If your trailer has two drop leg jacks, lower them both to the same level, following the above instructions. NOTICE If the drop legs are not set at the same level, one of the drop leg jacks can be overloaded and can be damaged. Release the handle (or crank) from its holder and engage it with the jack shaft. Rotate the handle (or crank) clockwise to slowly extend the jack and transfer the weight of the trailer tongue to the jack. On two speed jacks, move the handle to engage high speed mode. When the drop leg base contacts the ground, shift the gearbox into low speed mode.
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