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  1. First configuration change was made starting with...

    First configuration change was made starting with motors made in December 2010. The two piece configuration was changed to a four piece configuration.

    There have been multiple updates since then....
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    Classic text book case of a fuel pump problem....

    Classic text book case of a fuel pump problem. When you are pumping the primer ball you are doing what the fuel pumps are supposed to be doing. I would start there.

    Unbolt the fuel pumps and then...
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    Do you mean the block, where the crank shaft...

    Do you mean the block, where the crank shaft comes out? The flywheel is bolted to the top of the crank shaft.

    What is the birthday of your motor? Early SHO's had a situation where the oil seal...
  4. The rectifier/regulator is the most likely part...

    The rectifier/regulator is the most likely part to have failed that results in low electrical output but it could be the stator. Stator feeds electrical power to the R/R. The R/R feeds power to the...
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    Now that you mention the low pressure switch I...

    Now that you mention the low pressure switch I wonder why they are not used more often. What with all of the fuel problems being experienced by so many, they are a helpful tool to have.

    Do all...
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    Only way to know for sure is to install the quick...

    Only way to know for sure is to install the quick disconnect fittings and then T a vacuum gauge into the fuel system just upstream from the fuel pump. Run the motor at wide open throttle while having...
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    All the pretty and informative photographs are...

    All the pretty and informative photographs are gone? What happened?
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    Looks like the plastic retainer clip is worn and...

    Looks like the plastic retainer clip is worn and has lost its gripping ability.

    Mercury refers to it as a "bushing". Part number 932481.
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    LA means it has a Long shaft mid-section....

    LA means it has a Long shaft mid-section. Nominally 20". As would be used on a bass or bay boat. XA means it has an eXtra long shaft mid-section. Nominally 25". As might be used on a salt water deep...
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    Your trim motor is the two wire type. Really easy...

    Your trim motor is the two wire type. Really easy to test.

    Remove the heavy blue wire and the heavy green wire from the trim and tilt relays. The wires that come from outside the cowling from the...
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    It might be designed to nest within the VST cover...

    It might be designed to nest within the VST cover and then when the collar is inserted it goes within the ID of the O ring. Thereby preventing a loss of leakage and fuel pressure in that manner.
    ...
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    I am not familiar with that specific O ring. The...

    I am not familiar with that specific O ring. The SM makes the OD of the O ring appear to be the same size as the OD of the plastic collar right below it. It appears that the O ring might be inserted...
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    The three year old motor will have the gear case...

    The three year old motor will have the gear case filled but the oil system and fuel system will have been drained following the factory run check. The internals of the power plant may be at some risk...
  14. Check the voltage to the starter motor at the...

    Check the voltage to the starter motor at the starter motor while the motor is being cranked. Voltage at the battery means little if it cannot make its way to the starter motor. What is the voltage?...
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    The engine smoking at start up and the smell of...

    The engine smoking at start up and the smell of gasoline in the oil are two different issues. The first you can try to eliminate by trimming the motor up when you stop using it. See if the smoke goes...
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    There are several different versions of a VMax...

    There are several different versions of a VMax 150. I suspect that the one you are considering has carburetors. With that model you are correct, there is no engine readout data available to a PC...
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    Not unheard of in four stroke models. Try tilting...

    Not unheard of in four stroke models. Try tilting the motor up about 20 degrees or so when it is not being used for a period of time. Here is what Yamaha has to say:
    ...
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    Jethro is over himself. Jethro be gone.

    Jethro is over himself. Jethro be gone.
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    The low oil warning signal comes from the sensor...

    The low oil warning signal comes from the sensor assembly in the main oil tank. The over temperature warning signal comes from either of two thermoswitches installed in each cylinder head. The...
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    The base gasket and other midsection components...

    The base gasket and other midsection components have different part numbers. Does not mean they are not interchangeable, it just does not confirm that they are.

    If I were in your shoes I would at...
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    Can we not have different positions? Yours, mine,...

    Can we not have different positions? Yours, mine, Mercury Marine's, a training instructor's within Mercury Marine, fuel supplier's, Billybob boater's, or ?

    The folks can then read for themselves...
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    What mid-section will the OX66 block be mounted...

    What mid-section will the OX66 block be mounted on?

    Will the lower cowling also be an HPDI cowling?

    Looks like there is plenty of vertical clearance but there are many other issues involved....
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    I see nothing in the wiring diagram that leads me...

    I see nothing in the wiring diagram that leads me to believe that the over temperature warning system will be affected if the oil tanks, sensors and oil control module are removed.

    Why is the...
  24. Theoretical information below. Not specific to...

    Theoretical information below. Not specific to your particular model.

    http://i65.tinypic.com/rri9v9.jpg
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    http://i63.tinypic.com/slpa9i.jpg

    http://i63.tinypic.com/slpa9i.jpg
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