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    Points for a 1975 Mercury 7.5

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    Points for a 1975 Mercury 7.5

    https://www.ebay.com/p/1823374857
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    2000 200hp Saltwater series ,Replaced trim cowl switch, what is this retainer piece???

    That was not so hard now was it? Bolts hold bracket in place. Bracket holds the switch in place.
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    2007 3.3l 250hp starting at 3000+ rpm

    The 3.3 liter F250 has a single electronic throttle valve. No idle air control valve is used. The electronic throttle valve has two throttle position sensors that are part of it.
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    2000 200hp Saltwater series ,Replaced trim cowl switch, what is this retainer piece???

    Is the model of the motor not known?
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    2007 3.3l 250hp starting at 3000+ rpm

    The 3.3 liter F250 is known to race at start up. Will settle down if left alone.
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    2007 3.3l 250hp starting at 3000+ rpm

    APS and TPS are within specifications.
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    2007 3.3l 250hp starting at 3000+ rpm

    Has it been verified with a tachometer that it is running at 3000 RPM? How long does it run?
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    2000 200hp Saltwater series ,Replaced trim cowl switch, what is this retainer piece???

    What is the model of the motor? They are not all the same. I suspect you are talking about a bracket. The bracket that holds the switch in place. Not understanding how you installed a new switch without having removed the bracket.
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    prov 150 carb question

    Then somebody seems to have attempted a repair previously. Any idea how far the rod was inserted? Too far and it could mess the passageway up. Can you drill the rod so as to get an extraction screw on it?
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    prov 150 carb question

    Extract the balls then drill and tap for a screw. While the balls ares out thoroughly clean the carburetors.
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    2007 40hp Merc carb and compression questions

    The BTR has an electric starter motor. The BNH has pull start. You mentioned pulling the rope when doing your compression test so I assumed (yes, I know) that you don't have electric start. Are you wanting your model to have low compression?
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    2007 40hp Merc carb and compression questions

    Your model motor has an automatic decompression device so that it can be more easily pull started. This throws off the compression test numbers.
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    2007 40hp Merc carb and compression questions

    Yamaha made a number of motors for the Mariner brand and the Mercury brand for many years. All the way up to the Mercury 225 HP four stroke model. Known by many as a Mercaha or Yamamerc. I can only report what Yamaha information says. Following is from the Yamaha service manual.
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    2007 40hp Merc carb and compression questions

    Looks to be a Yamaha power plant. Yamaha data for a 2007 model year F40 indicates the minimum compression pressure as being 87 psi. Yamaha data shows the idle mixture screw setting to be 2 and 1/2 turns out from being just slightly seated.
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    2007 40hp Merc carb and compression questions

    What is the engine serial number? How was the test performed? Motor should have been hot. Throttle wide open. Known good gauge. Battery full charged. Motor cranked until the pressure stopped rising.
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    Cost of carb rebuild

    Dying to hear how fuel that should be entirely/mostly in a gaseous state by the time it enters the combustion chamber can create a puddle.
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    Primer bulb issue

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    Primer bulb issue

    Yamaha's modus operandi seems to be if X parts are needed let's use X plus Y plus Z parts.
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    Primer bulb issue

    Three mechanical fuel pumps, one electric fuel pump and six enrichment valves.
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