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    Stator issue ( I believe )

    Yamaha tune-up specification book.
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    Stator issue ( I believe )

    Have you already tested the CDI box output and found that it is below specifications? Follow this and see if it makes a difference.
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    Stator issue ( I believe )

    A DVA adapter is measuring peak AC voltage but yes the meter gets positioned on the DC setting. Confuses some folks.
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    Stator issue ( I believe )

    Yamaha does not use any black (ground) wires in AC circuits. DC circuits only. Is that a Yamaha manual diagram?
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    04 Yamaha 225 4-stroke- -injector harness 2 End Plugs?

    You are welcome!
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    04 Yamaha 225 4-stroke- -injector harness 2 End Plugs?

    Since I am not a complete asshole
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    04 Yamaha 225 4-stroke- -injector harness 2 End Plugs?

    Purpose of the forums, in my opinion, is to help people. Teach them. How to fish. Not to give them fishes.
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    04 Yamaha 225 4-stroke- -injector harness 2 End Plugs?

    800+? I don't think so. https://www.yamahapubs.com/home/search?category_id=4&year=2004&family_name=F200TXRC
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    04 Yamaha 225 4-stroke- -injector harness 2 End Plugs?

    Page 8-7 and 8-8 of your Yamaha service manual.
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    Yamaha F225 ECU Upgrade

    There is a connector on the motor that provides the grounds to illuminate lights within a conventional Yamaha tachometer or icons within a Yamaha multifunction tachometer. Those grounds could be wired to a relay that would then power a much brighter light at the helm. A relay so that current...
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    Yamaha F225 ECU Upgrade

    The -50-00 wire harness will not work with the later ECU's. Would be very simple to wire a bright red light on the dash to indicate the nature of the warning alarms. One for temperature. One for oil pressure. Or to wire in a larger warning horn. Now with a problem resulting in the warning...
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    Yamaha LCD meter wiring diagram

    If you need help making the lights work, holler.
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    Yamaha LCD meter wiring diagram

    The black wire, the green wire and the yellow wire will give you RPM information on the tachometer. Other wires are used to for the oil status lights. I don't think that vintage tachometer has an over temperature light.
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    Yamaha LCD meter wiring diagram

    Tachometer connection for power, ground and tachometer signal will look something like this.
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    Yamaha LCD meter wiring diagram

    The tachometer and its lights are unrelated to the warning horn. That is, the horn will sound and the motor will go into RPM reduction mode even if there is no tachometer installed. What type of Yamaha control box do you have?
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    Identify Engine Year and model

    That is the Mercury serial number. You can go to the Mercury Marine website and insert that number into a search box. It will take you to the parts catalog for the motor.
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    04 Yamaha, Help w/Essential Gaskets/seals Powerhead Removal

    Seems like one would want to consult with the repair kit drawing at the Yamaha US website.
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    Yamaha F225 ECU Upgrade

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    Yamaha F225 ECU Upgrade

    The ECU is monitoring engine temperature. If and when the motor gets too hot the ECU will sound the alarm and put the motor into RPM reduction mode. The Command Link gauge will indicate the problem. Is it all that important that the NMEA 2000 display indicate some particular temperature value?
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    Yamaha F225 ECU Upgrade

    An F25TXRD model came with a -30 ECU and a -50 wire harness assembly. The first F225 with full Command Link capability was an F225TXR model with a production date of April 2005. It used a -31 ECU and a -51 wire harness assembly. The -30 ECU was replaced by the -31 which was replaced by the...
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