1997 Johnson Evinrude "EU" 40 thru 55 2-Cylinder Service Manual, P/N 507265, Page 83Get this manual
Component Servicing
INote Anytime the
VRO oil supply line has been disconnected from the engine, you must run 50:1 fuelloil mixture in the fuel tank for period of time sufficient to verify oil consumptionOnce oil consumption has been verified, you can switch back to clear fuel in the tankOil Supply Hose and Pickup Assembly
If you suspect the oil supply to the check two areas
pump is being restricted,
1Remove the pickup assembly and inspect for clogged or contaminated filter: Remove the four No25 Torx screws, and remove the pickup assembly from the reservoir Carefully, remove the pickup filter and flush with mild solvent to remove any contamination Install the filter, being careful not to move the pickup assembly on its support rods2With the pickup assembly out of the reservoir, vacuum test the system to check for air leaks: Carefully, remove the oil hose from pickup assembly and from engine oil inlet fittingUse low pressure air to purge hose of oilUse cap holder, PIN 329661to plug pickup end of hose