just found this with all the 3tj/4dx parts and part numbers-just look down and to the right and youll see 4dx1,click on it and a list of components comes up- and go and find your bits-will make ordering at fowlers alot quicker!!
here-
http://62.5.189.98/yamahaeur/exist/moto ... /FZR400RR/" onclick="window.open(this.href);return false;
youll have to copy and paste it into your browser as i cant seem to make a link.the sites also got thirty years worth of yam part numbers which makes cross referencing t/cat/4jh/3tj/3he stuff alot easier

i must say, Job well done 996 , parts diagram are so much clearer compare to the manual downloads