Yamaha break in advice

I just recently bought a new boat and went with Yamaha main motor and kicker both are 4 strokes, just wondering if u Yamaha folks have any advice for breaking on both motors, is it possible to break both in at the same time? Thx Tom

Follow the owners manual for factory recommended break in process. As far as doing both at the same time, I would not think that it would work, but then again, my wife tells me that I am never right.

i believe it’s 1st hour nothing over 1,000 rpm’s (basically idle only), 2nd & 3rd hours nothing over 3,000 rpm’s, then after that you can get on plane and do some faster runs, just don’t keep it pegged at the same rpm or WOT for extended periods, after 10 hours and your 1st oil change you can drive it normally (some do it earlier)

Contact your dealer or the SBC boys for specifics.

The method specified by JoeMX1825 is correct, however I would consult the manual for the length of time needed for the break-in period as it varies with make and model.

Agree, follow the manual. Track the times in a notebook in case there are any warranty issues.

The biggest concern on a 4 stroke is to get the piston rings seated properly. If they don’t you may have gas leaking over into the oil reserve.

Never figured out why manufactures don’t ship motors already “Broke In”

-J.

“Never figured out why manufactures don’t ship motors already “Broke In”

I asked that question too when I bought my Yamaha a couple years ago. It was a 2010 model still in the crate 3 years later. Apparently the preceding sales manager had forgot about it…helped me get a better price. But that’s why they told me they don’t come pre-broken in, because sometimes they sit whether it be in transport, in stock, or the back room collecting dust.

..and from a warranty/liability standpoint too I’m sure ~

my suzuki required 6 hours break in time before i could go full throttle. read the manual

I agree with the other posts about break in, go by the owners manual.
I followed the manual for the break process for my 2010 Yamaha.It does take time but I believe it is well worth it.

Attached you will find a Yamaha Break-In Schedule as well as minimum octane levels for motors. I strongly suggest non-oxy gas in all motors if possible.

Sorry page 2 is upside down.

Go by the book.I always took one good day to complete break-in,to get it out of the way.Then fish!

not to hi-jack the post but calvin you mentioned non-oxy gas, is that the same as 91/92 octane? i came across a site that posted all the stations that have non-oxy gas and i checked out 2 or 3 or them and all they had was 92 octane gas. when i went into the stores and asked if they had non-oxy gas for boats they pointed to that gas and said “yup thats it”. Ive always used that gas and put in some seafoam into the tank with each fill up cause thats what my dealer recommended i do.

Not all non oxy fuel is 91 or 92 octane. Most of the time that is what you find for non oxy gas but there are a few stations around that I have seen carrying 87 non oxy fuel.