Mercury Mariner 8/9.9HP 4-Stroke Factory Service Manual, Page 238Get this manual
Cable Installation Tiller Shift Models-Control Cables
1Rotate tiller handle twist grip into "FORWARD" gear and then to "FAST" position (full throttle ccw)2Secure longest cable into inner groove on top side of throttle cam pulley
Side Shift Models-Throttle Cables
1Rotate tiller handle twist grip to "FAST" position (full throttleccw)2Secure longest cable into inner groove on top side of throttle cam pulley
aPulleyThrottle Cable
aPulleyThrottle Cable
3Secure remaining cable into outer groove on bottom side of pulleyPlace cable jackets into notches on anchor bracket