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  1. R

    Metal Shavings

    I doubt you can check backlash that way !!
  2. R

    Johnson 90hp alarm buzzer

    The trouble shooting starts with a compression test.-----Post your actual values here.
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    Metal Shavings

    ?//----How can you check gear lash in neutral by turning the propshaft.---I need to know.
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    Too much smoke

    Bad float valve.----Or fuel pump diaphragm ruptured. ----A 3 cylinder or 2 cylinder motor?
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    1974 Evinrude 25hp wont run.

    There is no powerpack on this motor !
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    1973 johnson 25hp 25R73A

    ?----The top ring will only fit one way!!
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    Why would the electrode on a spark plug get smashed

    Are you putting the correct plugs in ?
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    Hey Newbies

    A lot of this could be solved if this site forced folks to include model # / year / pictures / history of motor before questions can be submitted.------Nothing like giving advice and having poster say.----" Already did that "
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    2005 Johnson 90hp 4-Stroke J90PL4SO Lower Unit Knock at Idle Forward/Reverse

    What you are hearing may be normal for a heavy prop , and running on a hose !-----No point in wasting good gear oil.
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    2005 Johnson 90hp 4-Stroke J90PL4SO Lower Unit Knock at Idle Forward/Reverse

    Take the prop off and test run in forward and reverse.
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    1974 Merc 1500 Telltale issue

    Fact ------When there is no water in the block , exhaust can come out the tell tale.----That is the way it is !
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    Electric Cars or Trucks

    I understand that popularity of formula 1 went down when engines stopped screaming making lots of noise at 18,000 RPM.----Same with unlimited hydroplanes when they moved away from V-12 Merlin / Packard engines.----Turbines just are not the same.
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    2005 Johnson 90hp 4-Stroke J90PL4SO Lower Unit Knock at Idle Forward/Reverse

    Some will argue.-----It sounds normal to me.----Have a look on the parts books for Suzuki and Johnson to see what the clutch dog looks like.-----The pinion gear / forward / reverse are always meshed.----It is the clutch dog that moves between forward and reverse that has that 10 / 15 degree...
  14. R

    Metal Shavings

    But you are supposed to shift quickly from neutral to avoid grinding the clutch dog on the spinning gears !!
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    2005 Johnson 90hp 4-Stroke J90PL4SO Lower Unit Knock at Idle Forward/Reverse

    Is this while running on a hose ?----If yes that it may well be the prop causing the clutch dog to make the noise.----Tested in the water ?
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    Metal Shavings

    Even new oil smells. ---You are supposed to shift with a quick firm motion.---Easing it onto gear does the damage.
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    Mercury. Too many grounds in one spot?

    What motor ?------Not sure why it would matter !----What is your motor doing / not doing ?----Also indicates that many folks have issues understanding 12 volts / wires.
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    1974 Evinrude 25hp wont run.

    Bypass the fuel pump on the motor.-----Have your assistant operate the manual pump.----Does the motor now start and keep running , yes or no ?
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