Replacing the upper cam gear in Pfaff 1222
Does anyone know if there's a place online to show me how to replace the upper gearshift cam [for the stitch selection]? My machine is like new, but it is dragging every time it rotates and I notice that the plastic cam is a bit worn in only one spot. I want to replace that cam but I'm scared if I open it I might get into real trouble. If I can watch it done, I think I stand a chance at fixing it.
OR should I pay the $300 to have it done????? The previous owner did some 'over oiling' on anything that moved.
I have the repair manual downloaded....I just need to watch someone do it [like holding my hand!]