Mercury Mariner 4, 5 102CC Sail 1990 Outboard Service Shop Manual, Page 32Get this manual
Carburetor Adjustments Approximate Initial Settings
AIDLE SPEED SCREW
1Tiller Handle Models: Rotate throttle twist grip to idle position Remote Cont rol Models: Place remote control toNeutral(id le position) 2Loosen screw (a) to allow throttle arm (b) to move freely of throttle wire (c)
5With throttle arm (a) of carburetor against idle speed screw (b) pull slack from throttle wire (c) and secure wire into retainer by tightening screw (d)