Originally Posted by Amy
I have to limit my outboard engine to reduce my boat top speed to less than 17kts? The engine is a 40hp mariner, tiller controlled.
Ideally the limiting has to occur inside the engine. Any advice welcomed.
If it's a 2 cylinders, gear tiller 40 HP Mariner, the fastest thing to adjust to limit speed will be : loosen nut counterclockwise some mm, turn clockwise some mm the Stopper A bolt so to limit the tiller/carb advance so does not reach wot (wide open throtle, will be a matter of adjusting to the desire speed you are looking for with a apropriate instrument/gauge. Do not move anything else, hold still with a screw driver the stopper bolt A and adjust/tight the nut clockwise when finished.
See if you Mariner has the same type Stoppers as photo.
A(Upper) for WOT