1987 Johnson/Evinrude CU Outboards 35A thru 55 Service Manual, Page 50Get this manual
Break-In Procedure 45 Comm 48, 55 Command 50TE modelsuse 50:1 fueloil mixture in the fuel tankUse only Evinrude or Johnson Outboard Lubricant, or other BIA certified TC-W lubricants at ratio not leaner than 50: 135, 40, 50E modelsuse 100: fueloil mixture in the fuel tank in addition to the AccuMix or VRO system Use only Evinrude or Johnson Outboard Lubricant, or other BIA certified TC-W lubricants at ratio not leaner than 100: 1Mark oil level on VRO reservoir to verify oil consumption before changing to clear fuelOperation (first hour): For the first 5-10 minutes, operate engine at fast idleFrequently check operation of water pumpThere should be steady stream of water from the overboard indicator at the rear starboard corner of the lower engine coverA fine mist of water should be discharged from exhaust relief outletFor remainder of first hour, engine should be operated at boat planing speedDo not operate engine over 3000 RPM, or approximately one -half throttleW ith easy-planing boats, bring the boat into planing position with full power and then immediately reduce the throttle setting to approximately 3000 RPM (one-half throttle) BE SURE boat maintains planing attitude at this throttle settingOperation (second hour): Bring boat into planing attitude and reduce power to 4000 RPM, or approximately three -quarters throttle, while maintaining planing attitudeAt intervals during he second hour, apply full power for periods of one to two minutes, returning to three -quarters throttle for cooling periodAvoid continuous full-throttle operation for extended periods during the next eight hours