cam folower pin is likely worn and / or the lift cover linkage needs adjustment.. that is the probable lifting at only the top of the quadrant issue. 13$ top cover kit and a 2$ dowel and about 4 hours MAX time to rehab the top cover... less time if the 3pt linkages come apart easilly.
as WD said.. gravity down only.. thus if the rockshaft bushings have any crud in their bores.. they may stick up unless helped down by weight.. as long s it goes down with hand pressur eor a light inplement.. it's good to go.
on the genny.. don't assume brushes.. cuz if the vreg is bad.. the genny won't make any go juice!!
big connection is armature.. small connection is field.
motor test it.
engine off.
slip belt off genny
jump bat hot to armature and field with their wires pulled from the genny. if the genny spinds.. she will probably charge.
that lil test also poalrized her, in case for some odd reason she wasn't.
now.. if she don't spin.. take her and the vreg to a rebuilder.
if she does spin, hook back up and start her up.. if no charge at the bat, full field her by jumping bat hot to the field spade for a sec.. if charge comes up.. vreg needs attention, as field ckt is open.
if still nada, jump bat hot to armature.. .. if that makes her charge, vreg needs attention as cutout is open.
if neither help, but she did spin, jump bat hot to arm and field.. if that makes charge, then vreg field and cutout ckts are open.
soundguy