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  1. R

    Need Help -Johnson 70HP 1975 Outboard Shakes

    Do the following in order.-----Make sure throttle plates are closed at idle.-------Post the compression numbers first.-----Then see if spark jumps a gap of 3/8" or more on each lead.-----Then start motor with timing light hooked up to #1 cylinder.----Observe the flashing light.----Should flash...
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    Is my mercury oil injected?

    Many think that this motor has suffered.----But for the owner----" Hope is eternal "----and we wish him good luck with it.
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    Timimg on mercury

    You want to test / put ignition through it paces.---See if it develops designed output.---So does spark jump a gap of 3/8" or more on each lead.----You can do yourself a favour by learning to do this test !!
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    Ebbtide 2003 Hard shifting at the control box, cables are good ?

    What motor / drive do you have ?----Many drives need the propeller turning or motor running for smooth shifting.---Less damage to gear box that way.
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    Is my mercury oil injected?

    Nope.----The vanes take a set over time.----Have you tested the overheat horn in the control box if if it has one.----With no tested overheat horn you are taking chances.
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    Timimg on mercury

    Crankcase must be sealed with--- loctite 518---or equivalent.----No RTV to be used.----The question was-----Does spark jump a gap of 3/8" on all leads?----The question is not what kind of plugs are in the motor.----V-6 motors run remarkably well on 5 of 6 cylinders.
  7. R

    Johnson 150 v6 leaking gas at idle

    So is it a 1977 model or a 2005 model ?
  8. R

    Timimg on mercury

    What kind of sealer did you use when closing up the block ?---Does spark jump a gap of 3/8" on all leads ?----Wires from switch boxes hooked up to correct coils ?
  9. R

    Ebbtide 2003 Hard shifting at the control box, cables are good ?

    Cables can be put in either position in the box.----At the motor end the shift cable moves first.-----So hook it up / adjust shift linkage first.-----Motor must be running or propeller must be turned when operating the control box.
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    Is my mercury oil injected?

    Those inline 6 motors need a new impeller about every 2 or 3 years.----The noise is likely from mechanical issues caused from running on straight gas.-----Loose / scored piston comes to mind.
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    Will evinrude work on johnson

    For a novice it is always best to ask before you spend your beer tokens
  12. R

    Is my mercury oil injected?

    You might like the fact that it runs.-----Some of us might not like what we hear.------Install a new impeller now.
  13. R

    1971 4hp mercury outboard

    Turn throttle grip to lowest setting and see if it will shift.
  14. R

    Is my mercury oil injected?

    Time to test it in the water I think.-----Post a video of that testing.
  15. R

    Should oil deposits be in the powerhead

    Not at all.-----A 2 stroke wastes gas and oil !!----A new motor in 1981 wasted this gas and oil the same way that same motor wastes it today.-----I have said it many times " 2 stroke operation and lubrication is not well understood " .----And 50 years ago folks were confused by it and it appears...
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    Will evinrude work on johnson

    You will have to install the driveshaft ( if it is good ) from your 1992 model.----Lot of work and pinion gear must be shimmed correctly !
  17. R

    Should oil deposits be in the powerhead

    Lubrication on a 2 stroke is not well understood.----You mix oil with the gas.----Some of this oil and gas goes right through the motor and is wasted.-----Shows up in the exhaust housing and alarms a lot of people.
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    newbie question 48 78120 A40 19P

    Well 48 is a number to designate that part # is for a prop.----Just like 47 is for a water pump impeller.-----Then you have the part # ----Then A40 designates various minor design changes or production run of this propeller.
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    Will evinrude work on johnson

    Any pictures?-----Only difference between Johnson and Evinrude is the color of paint.-----You would have to swap your shift rod into the replacement gearcase and set the shift rod height.---Then give it a try.-----Is driveshaft 1/4" shorter or 7/8" shorter ?
  20. R

    merc 60 6hp twin

    The model 60 with duel points was marketed in 1962 ( white ) to about 1968 or so .----Very nice running motor.-----Posting serial # gets you the year made.
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