1986+ Mercury 6/8/9.9/10/15HP 2-stroke Factory Service Manual, Page 43Get this manual
OUTBOARD INSTALLATION
WARNING
Using an outboard that exceeds the maximum horsepower limit of boat can: 1) cause loss of boat control 2) place too much weight at the transom altering the designed flotation characteristics of the boat or 3) cause the boat to break apart particularly around the transom areaOverpowering boat can result in serious injury, death, or boat damage
Outboard Remote Control
The remote control connected to your outboard must be equipped with start in gear protection deviceThis prevents the engine from starting when the outboard is in gear
WARNING
Avoid serious injury or death from sudden unexpected acceleration when starting your engineThe design of this outboard requires that the remote control used with it must have built in start in gear protection device