If using a bolt-on jack , assure the correct mounting hole pattern for your tongue size . The gap between the mounting bolts and the tongue is not to exceed 1/16"
1) Place the jack against the tongue and position the mounting straps on the opposite side of the tongue . Align the holes in the mounting bracket with the holes in the mounting straps .
2) Insert the 4 bolts through the mounting bracket and mounting straps . The upper bolts should rest on the top f the tongue . The upper bolts should rest on the top of the tongue .The lower bolts should be less than 1/16" from the bottom of the tongue .
3) Secure with locknuts , torque to 25 ft.lbs .
4) Check for clearnance of handle , trailer light cables , and coupler.