1997 Yamaha 200 tlrv need help with a part number please. Thank you.

[PettyOfficerBorden]

I have a 1997 Yahama 200 tlrv that needs the part that rolls against the "Cam Accel" part #6G5-41213-00-00. I do not know the name of this part or the part number and I cannot make sense of the parts diagram. Thanks for your help!