Re: Evinrude motor 70 ps building year according to serial number ?
maximus....VRO means Variable Ratio Oiling, they first came out with VRO in 1986 (I believe), so you know it is at most that old. I find it curious that the current owner doesn't know the year of the motor. I'm not a OMC guru like some of the guys here, but I doubt they would be able to tell you the exact year just by color as some colors and designs carried over between years. I had a 1990 60 hp that looked identical to that, so if I had to guess I would say it was 89 -91. You should look on the transom mounting bracket to get the model number, and I would also ask if the VRO is still hooked up and working or if the motor is running on premix so you know what you have to do with it. Good luck.