HEAT oven to 325 degrees F. Combine jelly, mustard, lemon juice and ground cloves in medium saucepan; place over medium heat and bring to a boil, stirring occasionally. Set aside.
SCORE fat on ham in a diamond design; stud with cloves. Place ham, fat side up, on rack in roasting pan. Insert meat thermometer, making sure it does not touch bone.
BAKE, uncovered, until thermometer registers 140 degrees F (1 1/2 to 2 hours); baste every 15 to 20 minutes with sauce.
HEAT remaining sauce; serve with ham.