Mercury Force 9.9, 15HP Outboards Service Manual, Page 38Get this manual
GADJUSTING PICK-UP POINT NOTE: If throttle dOBS not close, either the throttle return spring is too weak and should be repaced, or the thronJe shutter or shaft is binding1Loosen scre in swivel (A) This step does not apply to later style carburetorsSee page