sounds like it could be the starter ? remove and clean inside where the balls are (if i'm thinking of the correct starter ) as i didnt see it yet but dont put any lube in there as the balls stick in it . just clean all crud and maybe rust from the shaft . a little spray grease works for me well so far and light machine oil in the small hole in top of starter if all is clean and dry inside , shaft lightly lubed all should be good , deafening screech huh
hope it helps
, Dave
