515 Sickle mower pull arm

[NW Ford]

I've got a 515 sickle mower that I'm fixing up. I am how ever missing the pull-break away arm. The one that releases when the end of the sickle sticks something. Any one know of a salvage yard or someone that may have one?

 

[old]

I may have one out in my junk pile but would have to look in my manual to see what it looks like then look in my pile which by the way is not small LOL