1988 "CC" Colt / Junior thru 8 Models Service Manual, P/N 507659, Page 63Get this manual
7 Inspect propeller shaft seals for evidence of leakageReplace if necessary8Drain and refill gearcaseLubricate all components of engine See Lubrication, this section Check propeller condition Replace if damaged10Retorque all screws and nuts to specifications 11 Run engine in tank with proper test wheelCheck cooling system operationTo remove internal carboninject 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!