2003 Yamaha TDM 900 fork oil capacity

SOURCE: Fork oil capacity

Front Fork Oil cc (right leg) : 485 Front Fork Oil cc (left leg) : 495

SOURCE: front fork oil capacity

Hi
You can download the whole workshop service manual that has this info and heaps more from here. Hope this helps Thanks for using Fixya. 
regards robotek

SOURCE: Fork Oil Capacity

Use Yamaha suspension oil #01. Amount is 19 ounces. Oil level from top surface w/o cap nut is 3.15" to 5.51". I am sending you a link to a site where you can download a free shop repair manual. It is actually a bit complicated as you will see in the manual.

http://www.carlsalter.com/motorcycle-manuals.asp

Top rating due on this one! Thanks!

SOURCE: fork oil capacity

330mls per leg

SOURCE: 97 yamaha thunderace fork oil capacity

270mls per leg, or 280 if you want a little stiffer ride