1999 "EE" Evinrude 5 thru 15 4-Stroke Service Manual, P/N 787022, Page 37Get this manual
Special Operating Conditions Salt Water thru 15
Fresh water internal flushing is recommended after use in salt, polluted, or brackish water to prevent deposits from clogging the cooling passages Remove water flushing plugAttach water hose and turn on water to begin flushing
Motor can be stopped or running at idle while flushingDo not flush engine with water system that exceeds 45 PSI
rn Run aengine in test tank orgarbage can, forofat least five large container fresh water, such as 30-gallon (113 liter)
minutes as soon as possible after each use in salt, polluted, or brackish water to prevent deposits from clogging cooling passagesRun engine in well-ventilated area Remove propeller Water level must be in(10 cm) above the antiventilation plate Engine in NEUTRALRun at fast idle only