I want you to understand that I have never worked on this model. I suggest that you get the service manual for it. Here is some more info
http://onlycubcadets.net/forum/showthread.php?t=835
http://cubcadet.custhelp.com/app/ans...ervice-manuals
Models: 805, 1015, 1020, 1105, 1110, 1215, 1220, 1315, 1320, 1330, 1405, 1415, 1420, 1605, 1610, 1620, 1715, 1720
Form # 772-3870