I was reading your message posted on the talkabout website. I own a 1982
Mercedes 230CE and are also trying to replace the starter motor (what
fun). I have removed the two large bolts on the back of the motor and have
located the bottom bolt, I have not yet found the top bolt.
Did you manage to get these 10mm bolts off ?. The bottom bolt appears to
be an allen head, did you remove this with an allen socket or normal bolt
Any advice would be greatly appreciated. Or if you are still having
trouble I will let you know how I get on later today.