Broken pto engagement plastic

[Mkfan20]

With all of this cold and snow my bx1850 is getting quite a workout. Unfortunately I broke the piece of plastic which holds the pto engagement lever in place. I'm trying to find a part number for the replacement but can't find anyone who has the diagrams. Does anyone know where I can get the details or what the part numer would be.
Thanks

 

[PeterK]

Might want to visit your local dealer to order it.