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    Yamaha F150 Speedo Tube Disconnected?

    It is all shown in the parts catalog. Available to everyone.
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    Getting no electrical power to anything on Yamaha 115 outboard

    I see what I think is the positive battery cable connected to the starter relay and the ground battery cable connected to the starter motor. If no power there then the battery cables, battery switch, battery, etc.. are kaput. Very strange but...
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    Getting no electrical power to anything on Yamaha 115 outboard

    You are saying you have no power to the motor. Did you test at the connections annotated as following on your photograph?
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    Getting no electrical power to anything on Yamaha 115 outboard

    What is the model of the motor?
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Not following you on the parts being identical. Different part numbers. Must be some physical differences.
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    That is interesting. Both have the same MSRP but different boats.net prices. Both of them still being available surprised me also. For 50% power increase and the cost being what it is I would give it a try.
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Neither could I. I looked at every line item of every page in the two parts manuals. Only difference I saw is the reed valve assembly. Surprised me actually. I was expecting the CDI assembly to be different.
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    It is all within the Yamaha USA parts catalog. Can be seen at www.yamahaoutboards.com
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    250 Yamaha SHO Speed

    I tried to find your model at Yams website. Could not find your exact boat. From what I can see from looking at the PB's, 40 MPH does not seem unreasonable but it depends upon the atmospheric pressure (motors make more or less HP depending upon the weather) and the weight of the boat...
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    250 Yamaha SHO Speed

    What is the model of the boat?
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    Little parts that arent around anymore.

    Good tip. Thanks for that.
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    yamaha 6y5t gauge hook up

    Sounds like you might have a 703 side mount control box. You did not say what you have. If you simply follow what the diagram shows you will have no problem. Four single colour coded wires (one of which is not used) with bullet connectors and one four pin connector. Pretty difficult but some...
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    yamaha 6y5t gauge hook up

    If you cannot understand that diagram then the motor needs to be taken to a mechanic that knows Yamaha outboard motors.
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    Yamaha 70B too much Autolube

    3.80cm3 for each of the three cylinders? Was the oil pump lever in the full throttle position? Seems excessive. Have you thought about doing a 9 minute test for more accurate results? Were you using Yamalube?
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    yamaha 6y5t gauge hook up

    Something miswired.
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    yamaha 6y5t gauge hook up

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    yamaha 6y5t gauge hook up

    White or sort of ivory coloured?
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    Yamaha 200HP Ignition Switch Replacement

    Post a photo of your control box please. Might not matter however. The key switch for a the panel is what matters. Remove your key switch and see if the configuration is the same as the latest key switch.
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    General MAP sensor question

    It might. ECU thinks there is a lot of air in the intake manifold. Adds too much fuel trying to get the fuel/air ratio correct.
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    Yamaha 200HP Ignition Switch Replacement

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