Thanks for sharing Gator. I had to replace the broken spring on my '85 250ES.
Hublake this really is an easy fix. As mentioned the left side cover comes off and you will see pretty quick what the issue is with yours. From what I remember you have to remove the small starting gear cover as well to facilitate lining up the starter reduction gears when you reassemble. As always it's a good idea to replace the gaskets while your at it so maybe have those ordered in advance.
1985 Honda ATC 250ES
1985 Honda ATC 250SX
1984 Honda ATC 200M
1983 Honda ATC 200
1984 Honda ATC 110