gravely 260 z pto won't engage

[Iabadger]

I changed the blades on the unit and the pto worked intermittently for a half day then not at all. The pto switch checks out ok for continuity and the brake and seat switches work. I had the unit tipped up to change the blades. Is there additional sensor that may have been tripped? I cant find it on the schematics. Would appreciate any help.

 

[sox3]

Check the relays. One is used for the blades. You can swap them around as they are all the same.