I have a CD with a bunch of Honda 90, 110, and 125 information on it. I've uploaded it onto the web so all of the members here can find it useful also.
Here is one for a 79-81 Atc 90 and Atc 110.
79-81 Atc 90 and 110
Atc 110 Manual 81-85
ATC 70-125 73-85 Repair Guide
ATC 110 Service Bulletin
Atc 110 Setup Manual 1984
Atc 110 Setup Manual 1985
Atc 110 Shop Manual 1985
Atc 125m Shop Manual 1986-1987
Atc 90 Service Bulletin
Carb Repair Helpful Hints
Finding Faults In The Charging System 1
Honda Help Notes 1
Honda Wire Color Codes 1
Understanding Honda Part Numbers 1
Some of these files are somewhat large so they will take some time to download, you also need Adobe Acrobat to open them.
This would be great to be Stickied so other members can find them easily if a moderator would do so