QUILL ASSEMBLY Replaces: MTD 717-900A, 717-0900, 717-0900A, 917-0900A For 36" deck model E and 32" deck model D Fits models 320, 357, 506, 836 series Splined shaft Use our replacement jackshaft 85-010 Shaft length 5-7/16" Use bearing 45-204 1991-1997