1991 Johnson/Evinrude Models "EI" 40 thru 55 Service Manual, Page 85Get this manual
Component Servicing
Any time that the VRO oil supply line has been disconnected from the engine, you must run 100:1 fueloil 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 tank
Oil Supply Hose and Pickup Assembly
If you suspect that the oil supply to the restricted, check two areas: pump is being
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 rods