I’m looking at your container assembly diagram for the Stihl sg71 sprayer on your diagram no 20 it looks like that’s what I’m after it’s a white pin that goes into the pump arm that you can switch from the right or left side of the machine I swopt the arm from left side to the right side and snaps the white pin on your website in the parts there’s a white pin that looks like it it’s saying it’s a retaining pin for the Stihl sg 71 the part number is 4255 705 1200 i just want to no that that’s the right part if not could you please let me no the right part number I need so I can order a couple of them as I say it’s a pin that keeps the arm pump arm in place.