to break in or not to break in?

[Cajun87]

My new 40 four stroke tohatsu came in Friday but couldn't get to the dealer fast enough for install so I am going on this Thursday. I asked the dealer if these new generation engines need to have the old school break in procedure done on them, he said no, he said four strokes get oiled good enough every time the piston comes down so there is no need to slowly break them in. He said keep it about three quarters throttle for a while and you'll be fine. However, I got on the tohatsu website and they have it listed that the 40 four strokes need a 10 hr break in cycle. Who do i believe, the dealer or the tohatsu website? Part of me thinks tohatsu just put that on their site to cover their ***. So my main question is what does everybody else do when they by a brand new four stroke?

[marshrunner757]

I followed the instructions pretty close. Probably about 8 hours instead of 10. The dealer also instructed me to follow break-in.

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[cmcnabb]

LAM told me to follow the break in procedure and I did to an extent. I did the idle, the half throttle for an hour and then probably gave it another 3 hours of full speed for a minute then half throttle for 10 mins. After that I was kinda tired of that so i just ran wide open like normal everywhere. I think a 10 hour break in is way over kill. I tried to follow it just for warranty sake but I doubt they will not warranty the motor because I didn't break it in a full 10 hours. I would say ask the dealer if they will warranty it without the break in, if they say yes then baby it for a little bit then go

[marshrunner757]

Also, I don't remember if you're getting tiller or not. If so, you'll most likely not like the trim switch location. You can splice in and put a remote switch.

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[Cajun87]

Yeah its a tiller, my omc only had trim on the side of the motor, which made it useless while running, so i spliced a switch to the gunnel where my hand already sits while running. Its still there so im gonna do the same with this motor.


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[marshrunner757]

That's exactly how mine is

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