Peel, core, and finely chop or grind pears. Measure 3 cups into a large saucepan.
Remove zest from the orange peel using a vegetable peeler; set aside. Remove and discard remaining white part of orange peel. Chop orange, reserving any juice; add to pan. Repeat procedure with the lemon and add to pan. Thinly slice, chop, or grind reserved peel from orange and lemon; add to pan.
Add pineapple, pineapple juice, and cherries to pan; mix thoroughly.
Prepare eight 1-cup jars and keep hot. Measure sugar into a separate bowl. Stir pectin into fruit and add butter or margarine.