Since you are restoring anyway, you can make that task much easier by removing the pivot bar first. Drive the tension pin to the left of your finger INTO the casting(driving it all the way through the hinge pin(pivot bar). That gives you clear access to the set screw(s). Take care to NOT mushroom the tension pin(roll pin).
Goldie(Bought New SN 377425)/4" jointer/6" beltsander/12" planer/stripsander/bandsaw/powerstation /Scroll saw/Jig saw /Craftsman 10" ras/Craftsman 6" thicknessplaner/ Dayton10"tablesaw(restoredfromneighborstrashpile)/ Mark VII restoration in 'progress'/ 10E(SN E3779) restoration in progress, a 510 on the back burner and a growing pile of items to be eventually returned to useful life. - aka Red Grange