Chosen Solution
What would cause my engine not to start when pto is hooked up… but when disconnected starts right up?
Hi, Here’s an image that shows how to test if the PTO interlock switch is OK. If the switch is faulty the replacement part number is 1686620SM. Search online using the part number only to find suppliers that suit you best.
(click on image to enlarge) If the switch tests OK here’s a coupe of images of the wiring diagram - left side is the safety switch circuits and the right is the complete wiring for the mower.
(click on image to enlarge)
