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    Moving the filter

    What is the engine ID or serial number?
  2. B

    Moving the filter

    Different design philosophy. Yam likes to "pull" fuel from a primary fuel filter. My Mercury EFI pumped it through the primary fuel filter. Racor fuel filters are rated for up to about 7 psi as I recall for folks that use an electric fuel pump to deliver fuel to a motor.
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    No power to F9.9 Yamaha

    Is the complete model of the motor not known?
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    Please help cant find wiring schematics/diagram for 86 mercury 150 XR2 serial number 0B199676

    The tachometer.
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    Wiring diagram for 1999 15 Eh 4ST?

    You are welcome. Glad your figured it out.
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    Wiring diagram for 1999 15 Eh 4ST?

    Looks to have been made by Yamaha for Mercury. Equivalent of a Yamaha F15ESHX. In a Yamaha the white wire to the CDI assembly is grounded to stop the motor from running. I see a disconnected white wire. Does that lead to the CDI box?
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    Wiring diagram for 1999 15 Eh 4ST?

    What is the engine serial number plz?
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    200 hpdi compression. Good or no good

    You are well above Yamaha's minimum compression specification for that model. You can try some ring free for a period of time, or a decarbon treatment, to see if the pressures rise, or become closer to one another. But if the motor starts, idles and runs well it should not be of concern.
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    whining noise in throttle

    Sounds like you have a 703 side mounted remote control box. The warning horn/buzzer is located within the control box. When you hear the horn, stop the motor immediately. There is no failsafe mode. Keep operating the motor with the horn whining and you can ruin the motor. A reduction from...
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    Please help cant find wiring schematics/diagram for 86 mercury 150 XR2 serial number 0B199676

    What is the issue that you are trying to solve? The electrical connections to a two wire R/R can't get any simpler.
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    2006 Yamaha F150 wont turn off

    Have you checked for continuity between the black wire and the white wire at the key switch panel connector? Key off = continuity. Key on = no continuity. Kill switch lanyard pulled = continuity. Kill switch lanyard in place = no continuity.
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    1999 Yamaha vmax

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    2006 Yamaha F150 wont turn off

    Have you disconnected and reconnected the ten pin harness several times at both ends? Could be some corrosion build up on the terminal pins that are not allowing the ground from the key switch/kill switch to make its way to the motor.
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    1999 Yamaha vmax

    That is the model. Not the model code.
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    1999 Yamaha vmax

    Yes. 64L.
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    1995 Yamaha 130 oil injection lroblem

    Thanks for the feedback. Glad you found the problem.
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    1998 Mercury 150EFI wiring help

    It will be found in the applicable Mercury service manual.
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    90TLRB oiling rate setting

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    Suzuki DT115 Voltage Regulator/ Rectifier

    I presume that you have but two electrical leads coming from the stator coil. Is that correct?
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    1999 F40TLRX DIAGNOSTIC PORT LOCATION

    A 1999 F40TLRX does not have YDIS capability.
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