2008 Evinrude E-TEC 55MFE Technical Manual, Page 242Get this manual
GEARCASE IMPELLER SERVICE, MJRL MODELS
Removal
Remove the cotter pin and loosen the impeller nutRemove the nut, spacer, impeller, and thrust bushing
Installation
Apply small amount of Triple-Guard grease to the impeller shaft splinesPlace the thrust bushing in the impeller and then slide the assembly onto the impeller shaftInstall the spacer on splines of the impeller shaftInstall and torque the impeller nut 120 to 140 inlbs(14 to 16 Nm)If cotter pin holes in the impeller nut and impeller shaft are not aligned, continue to tighten the nut until they are in lineDo not loosenInsert new cotter pin through the impeller nut and shaftBend its ends over the nut to secure the assemblyInstall the impeller housing, and following sequence shown, tighten screws in stages to torque of 70 to 100 inlbs(8 to 12 Nm)