Here is the code for the 4th - 7th letters in the Honda VIN

http://www.atvstyle.com/index.php/honda-atv-model-codes

Here is an example how to read it
TB05 ATC 200 B-D / EC-D / XD-H / SE-G / ME-F / ESE-F

ATC200 B-D
ATC200E C-D
ATC200X D-H
ATC200S E-G
ATC200M E-F
ATC200ES E-F

The letters represent the year code as per normal ex G-86

Here is the other ATC200 code if you were wondering
TD05 ATC 200 EC-E / ESE-F / XD-H

Enjoy