1988 Johnson/Evinrude "CC" 40 thru 55 Models Service Manual, Page 56Get this manual
7Inspect propeller shaft seals for evidence of leakage Replace if necessary 8Drain and refill gearcaseLubricate all components of engineSee Lubrication, this section 9Check propeller conditionReplace if damaged 10Retorque all screws and nuts to specifications11 Run engine in tank with proper test wheelCheck cooling system operation To remove internal carbon, inject OMC Engine Tuner per directions on canDO NOT allow cleaner to soak in engine more than one hourCheck full-throttle test wheel RPMCheck fuel system for leaks!