Re: Evinrude 115 not starting
Just above and to the rear of the propeller. It deflects the propeller driven water and helps to compensate for engine torque. Loosen the bolt in the center and you can turn it . There are small raised adjustment marks so you can set it in increments.
If you have a factory service manual, it is described on the last page of the "Gearcase" section, or section 6.