1996 Johnson Evinrude "ED" 90 CV 88 thru 115 Service Manual, P/N 507126, Page 27Get this manual
Break-In Procedure During the first 10 hours of break-in operation you must use 50:1 fueloil ratio in your fuel tank in addition to the operation of the Oil Injection SystemAfter the 10-hour break-in period, check to see that the oil level in the tank has changed, indicating that oil has been used before using unmixed gasoline in the fuel system If the system is disconnected or the engine is not equipped with 25:1 fuel oil ratio in the fuel tank for the first 10 hourssystem, you must use a
To help ensure long engine life and prevent serious engine damage, using additional oil in the fuel is mandatory during the first few hours of operation of: new engine used engine with new powerhead used engine with newly rebuilt powerhead Note DO NOT operate motor out of waterWater pump can be damaged or engine can overheatI Note DO NOT operate engine at constant throttle settingChange engine RPM oftenINotel Verify water pump operation by looking for steady stream of water at the water pump indicatorFirst 10 Minutes Operate idle ONLYNext 50 Minutes engine in gear at fast_