1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 100Get this manual

1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 100

TIMING, SYNCHRONIZINGADJUSTING
Tiller Handle Shift Models
1Rotate tiller handle twist grip to NEUTRAL2Adjust jam nuts to remove slack from control cables while allowing full travel of throttle shift linkage