Break in for 2019 G23.

[Gschofield62]

Well it's finally warm enough for me to take out our new G23. Too cold still to do any water sports but it's nice to get this beautiful machine out on the lake. Is there a recommended break-in.? I haven't gone through the manual completely yet and I know from past experience that different manufacturers recommend different things.

[charlesml3]

Just follow the owners manual. It’s easy.


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[blueroom]

Drive it like you rented it. : )

[nukemustang]

There is one in the PCM engine manual. I followed it... figured it couldn’t hurt.


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[ST3]

We started surfing with only a few hours on the engine. Kept the RPMs under 4K when cruising. All good so far with 120hrs. Enjoy !!!


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[Tallredrider]

We started surfing with only a few hours on the engine. Kept the RPMs under 4K when cruising. All good so far with 120hrs. Enjoy !!!


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My 2016 manual (I can only assume that it is still the same, motor has not changed), said to increase to 5200 RPM for 1 minute regularly during break in. Do not maintain that RPM for more than 1 minute, but it is clear that going up that high is what they wanted me to do.

I think break in procedures are complete voodoo. ST3 is not off base, many engine break in procedures say stuff like that. Given that the motors are very similar in terms of valves, rings, pistons, etc, it is very hard to believe that one of those procedures is completely wrong. When I see this sort of variation, it is a clear signal that nobody knows what is the best.

[ST3]

Only time will tell...it’s simply amazing how well these things are machined now. There was a time when you would have needed a real break in period. I still baby my engines for the first hours/miles. If our primary goal was cruising vs surfing I would have done the break in much more gently.


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[scttp]

The one rule I’ve always abided by during break in periods is to vary the speed a lot. Do not just cruise at one speed for a long haul. Surfing and wakeboarding are good too because of stopping and restarting. Also like Tallred said, floor it every now and then once warmed up.



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[blueroom]

I know with smaller engines you want some higher RPM's during break-in to properly seat the rings and such. But, these boat motors are much different beasts. My guess is you really can't go too wrong, unless you do something dumb. Most owners probably don't even worry about it, or remember that their dealer said something about break-in (if they even did). Enjoy your boat!

[Gschofield62]

Thanks everyone I've been varying my speeds and flooring it for less than a minute out of time every time I go out. I've got a little over 5 hours on it now and we'll keep this up for another few. Thanks for all the help this forum is great.

[kylant]

I have read the PCM suggested break in procedure. (my boat will get its break-in hours today )
the manual states to warm up engine, then hit full throttle (max rpm, 5600 for the H6) for 1 minute, then reduce rpm to 2800-3000 for 1/2 hr. Then after that vary rpm, occasionally hitting max rpm, but not sustaining it for more than 1 minute. do this for the first 25 hours. Then change the oil
I think surfing, skiing, wakeboarding are great ways to break in the motor. There is constant change in rpm and load placed on the engine. That is what is needed to seat the rings