Erie Tools Spindle Assembly fits Long MTD 717-0913 917-0913 Model 806 42" Mower Deck H Fits 86 series with 42" deck 917-0913 For 42" cut, left spindle Spindle assembly replaces MTD-917-0913. Fits model 806 series 42" deck with left hand spindle quill for deck "H" Depending on Mower Model, 2 or 3 Spindles ay be required for 42" Decks