2005 Yamaha F90TR 90HP Outboards Factory Service Manual, Page 37Get this manual
Periodic checks and adjustments
3Loosen the locknut 1, remove the clip 2, and then disconnect the throttle cable joint 34Loosen the locknut 4, and then disconnect the throttle link rod joint from the ball joint of the throttle body
S6D83110
8Adjust the throttle link rod joint to align its hole with the ball joint on the throttle body
S6D83090