2007 Johnson 2 HP 4-Stroke Service Manual, Page 130Get this manual
GEARCASE INSPECTION Water Pump Inspect the impellerIf cut, tear or excessive wear is found, replace the impellerInspect the pump case, the inner sleeve and the under panelIf wear, crack, distortion or corrosion is found, replaceInspect the impeller pinIf excessive wear or other damage is found, replace the pin
Driveshaft Oil Seals
Visually check the oil sealsIf cut, nick, excessive wear or other damage is found, replace the oil seal
Replacement