We have a Craftsman zero turn tractor. We just replaced the PTO switch. Now, when the PTO switch is disengaged, the clutch keeps spinning and breaks the wires.

Hi,
Sounds like you had the clutch off at some point. There are three points where the clutch could be anchored to hold it in place.
Peace,
Clarke

Hi,
Sounds like you had the clutch off at some point. There are three points where the clutch could be anchored to hold it in place.
Peace,
Clarke

Probably the retainer clutch is not installed. I have the same problem. Ordered the part but can't figure out how it is installed. Any diagrams or pictures of the retainer clutch as it is installed on a Craftsman ZTS7500? Model number 107.27786

Hi,
Not quite clear on the problem, but I have a link to the manual and page 22 discusses the clutch"
http://www.searspartsdirect.com/partsdirect/user-manuals/2052/107277860-Craftsman-Parts-ZERO-TURN+REAR+ENGINE+RIDER-manual?pathRender=fromManualTabPage
Peace,
Clarke