Jazz,
I would drain/refill the oil to get rid of the diluted stuff. Spraying carb cleaner down the throat does nothing to clean a carb, though it will make the choke and throttle plates shiny ;-) As for the break-in schedule, consider yourself at hour number Zero, since the overfilled oil definitely affected ring seating. Remember that 4-strokes like to be run hot and hard. Babying this motor at this stage in its life may prevent the rings from ever seating.
If in fact the carb needs cleaning, the only proper way to clean it is by disassembling it, and then cleaning it. Perhaps you just need to adjust the idle with a shop tach. Specs are in the owner's manual, as well as the Factory service manual, available at any dealer. And there is that 3-year warranty thing... Your local dealer should be able to help you, but expect to be charged if the carb needs cleaned, as that is considered user abuse, and is not covered buy any manufacturer's warranty.
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Nothing against Internet OB dealers; They offer very good prices on "a box" that they never opened, and that makes new motors more accessible to a wider group of people. But... consumers often don't understand the nuances of the new 4-stroke motors. Long-distance guys (usually) are only interested in moving boxes, and often don't offer any pre-sale consultation. Purchase price is one thing -- cost of ownership is quite another.
This is yet another reason why dealer prep and customer consulting, available at a bricks-and-mortar dealership, even for a small 6 hp motor, is so valuable. Here is a brief excerpt of "the talk" that all of our walk-in customers get when taking delivery of any four-stroke:
1. Do not use synthetic oil. ever.
2. Use 10w-30 FC-W oil during break-in. Change after 10 hours. If running in a really hot climate, 10w-40 will be OK (but not required) after break-in -- otherwise, stick with 10w-30.
3. Check the dipstick. It is your only indicator of how much oil is actually in the motor. Never overfill. not even a drop. Half way on the dipstick is fine.
Some other tips our customers get:
Don't forget to verify LU lube level. If it's a little low, the driveshaft bearing in the LU can fail. That would be considered abuse, and may not be covered by warranty.
Never run fuel older than 30 days.
Always drain the carb (or at least run it dry until the motor stalls) if the motor will sit more than a week or two.
A water-separating 10-micron fuel filter is recommended, especially if running E-10 fuel. Likewise, if running E-10 gas, consider adding a good stabilizer, such as K-100, to every tank of gas.
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Hopefully adjusting the idle straightens out your issue.