Originally Posted by
Ranger09
Frank300. Lol. Actually the break in on all Mercurys is computer controlled. For the 1st hour on my motor it was rpm ranges of 4000-5400 and changing range every 2 minutes. Mechanic and manual both stated you was allowed to have a full throttle burst for no more than 5 seconds during the 1st hour. I didn't open her up. My mechanic also said load the boat with gear, fill lw, and keep the motor down for the 1st hour. The next hour run same ranges but for 10 minute intervals, then change range either up or down and do it again. After the 2 hr time period and during the 3rd you still need to change rps every 10 minutes but this hour open her up and let her shine using trim. Did I say my wife after about 4 minutes into a full throttle blow grabbed my arm and shouted that's enough my skin is going to rip off my face. I was running in the mid 70's by gps. Way to fast. My 80 mph speedometer was pegged out at 80 mph. I will never run it like that only during breakin. Now after 3 hrs you are still asked to change speeds and rpm's for the next 3 hours every 10 minutes. This is fishing time. The computer after 3 hours will start weining the oil back from 25/1 to the suggested ratio of 50/1 within the first 10 hours of run time. So I guess it's still a 10 hr time total really.........Ranger
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