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  1. R

    90 HP Mercury 2-stoke troubleshooting starter

    Charge the battery and have the battery LOAD TESTED first.----A 3 cylinder or inline 6 cylinder ?
  2. R

    Johnson LD-12A 5hp prop removal

    They just slide off where I am.----Used in salt water ??----If yes there could be corrosion.
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    Johnson LD-12A 5hp prop removal

    Prop is NOT available new from factory.
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    Johnson LD-12A 5hp prop removal

    That would be a left hand prop.----Not a common item.---The prop is NOT threaded.-----Your location ?.
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    1953 15 horse

    That part was used for about 40 years on many motors.----Dime a dozen at many salvage places.----Your location.
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    Need better hole shot

    Step #1 is to have the drive tested on a dynamometer.----Test power output of the motor.----Step #2 is to have boat weighed.
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    9.8 110 mercury wont throttle up anymore

    Sorry----I can not see , hear or touch your motor.----They are simple to trouble shoot and repair.
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    1971 Johnson 25hp Outboard - 25R71S

    The hole to the right of the word ---STOP----Is for the electric start plug.-----To me it appears that work has been done and motor is not factory original.-----Model # on the plate is ?----Picture of the plate ?
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    Starting an 57 Evinrude 7.5 fleet win after many many years of storage.

    Have you checked to see if spark will jump a gap of 1/4" or more on a test device ?-----It will need a new water pump impeller as well.
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    9.8 110 mercury wont throttle up anymore

    Motor may have overheated.----Many folks just do not know how critical it is to maintain these motors.-----There is nothing that warns you in case of overheat.----The motor runs until major damage is done.----Very simple to trouble shoot this motor.----Good luck with it.
  11. R

    9.8 110 mercury wont throttle up anymore

    Has a new water pump impeller been installed every 3 years ?---Check spark.----Might be running on 1 cylinder.-----If it has a plastic piece on top of carburetor , Is it cracked / broken ?-----Post the results of a compression test.
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    1971 Johnson 25hp Outboard - 25R71S

    Nope.----You need a puller with 3 bolts ( 1/4-20 ) to get the flywheel off.-----
  13. R

    How to disable quick start on 96 Johnson 150

    It is a 2 stroke and not a 4 stroke automotive engine.----You have to set aside automotive thinking.----Idle RPM is controlled with timing retard.----Throttle plate has calibrated opening because it needs to let a certain amount of fuel in.----That fuel has the oil to keep engine...
  14. R

    1983 7,5hp evinrude wont start

    Switch plug wires.
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    What engine do I have?

    Correct ,1980 model.
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    1971 Johnson 25hp Outboard - 25R71S

    Find the 2 small black wires coming from under the magneto.----They should not be connected.-----Remove flywheel and inspect coils.
  17. R

    What do these knobs do?

    ???-----Not much different than the tap in the kitchen sink.----But good luck with it.----Maybe read a book on how a simple carburetor works.
  18. R

    Bought my first boat to cut, gut and rebuild from bow to stern, including engine. Killed my back and suffered the wrath of the fiberglass demons

    Your location ?
  19. R

    What do these knobs do?

    The high speed is adjusted with throttle wide open with boat in the lake.----Adjust for best speed.--Then slow the boat down.-----Then adjust slow speed mixture for smoothest operation and smooth acceleration.
  20. R

    93 90hp lower engine cover

    And step #1 on a motor like that is a compression test.----For future reference.-----Post the actual values you get.
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