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  1. R

    Late 60s evinrude big twin 40hp fuel pump

    Swap the bypass covers.----Run the PRESSURE operated pump of the bottom cylinder.
  2. R

    9.8 hp vs 9.9 hp outboard engines

    The 7.5 model had a ----COMET ---decal on it.-----Intake ports on the side of the cylinder were smaller on the 7.5 comet than the lightning 9.8 engine block!
  3. R

    Force, lound bang full out now shuttering/ vibrating, lower unit?

    Hands on is the only way to check these things.----While boat is out of the water a compression test might be good to do as well.----Loud noises are not good.---Trouble shooting needs to be done.
  4. R

    9.8 hp vs 9.9 hp outboard engines

    Your lake might be 10 miles.----But when a motor leaves the factory they have no idea where it ends up.----The type of boat that it is going on !-----Or if the operator is 20 years or a 70 year old careful fisherman , operator
  5. R

    Force, lound bang full out now shuttering/ vibrating, lower unit?

    Loud noises usually mean trouble.-----Was gear oil low , yes or no ?-----If oil was low with shiny metal flakes or chunks of metal you have issues.
  6. R

    Force, lound bang full out now shuttering/ vibrating, lower unit?

    Check gear oil.
  7. R

    94’ Johnson 150 Ocean Runner No Start

    Charge the battery and have battery load tested.-----No money spent to do that.
  8. R

    Johnson 50 in need of help!!

    Good luck with the motor.
  9. R

    95 130 HP Johnson looses power / runs at 10 mph

    Do the testing and report what you find.---This process is one step at a time.
  10. R

    Johnson 50 in need of help!!

    Was it stored with fuel in the carburetors.-----Having to use choke clearly indicates carburetors need attention !!----I am quite sure it is NOT a reed valve issue.----They rarely fail !
  11. R

    9.8 hp vs 9.9 hp outboard engines

    Marketing 101 and just a decal.----I think you will find that an 11 hp motor cab be marketed as a 9.9 and a 14.1 can be marketed as a 15 HP.
  12. R

    95 130 HP Johnson looses power / runs at 10 mph

    Check for spark.----Spark must jump a gap of 3/8" or more on each lead.-----Perhaps test run with a portable tank and hose.
  13. R

    Carburetor frustration

    The electric primer is a valve.----It is not a pump.-----When the engine is cranking and the key is pushed in ,the FUEL PUMP pushes fuel through the primer valve directly into the motor.-----In my opinion the VRO pump is very simple.----Easy to take apart for inspection / repair.
  14. R

    Carburetor frustration

    Do you understand what the primer solenoid does ??---Please explain how it works.----The primer solenoid is a wonderful device.----Remained unchanged for nearly 30 years.----It works very well.---The 2 port pump worked on the crossflow V-4 engines.----It is not practical to use a 2 nipple pump...
  15. R

    Carburetor frustration

    Fuel component package has a FUEL pump looking thing on it.----That unit is used on many small motors as the fuel pump.----On your motor it was converted to be a vapor extraction pump.----Replace gasket #26.---Check cover for warpage.----Some will argue.---I doubt you need to resort to an...
  16. R

    Lower Unit Compatability

    As clearly state 76 and newer.----You can adapt the 1974 unit.----If bolted on it will shift to reverse when you select forward.----Somewhat inconvenient.----You would have to change linkages on the motor.-----And before you ask no there is nothing you can do in the control box !!
  17. R

    Johnson V4 swivel grease

    Corrosion products form between the bushing and aluminum.-----Oxygen joins with the aluminum to form aluminum oxide ( white powder ) thus there is more material now ( oxygen ) and the works jams up !!
  18. R

    Johnson 4R71D Resurrection Attempt

    It will run with 70 PSI.----You may be surprised how well it runs with that.-----$100 for a good used lower unit is a good deal.----Install a new impeller.
  19. R

    1972 Johnson 85hp Power tilt

    Your location ?
  20. R

    Top cylinder not firing Johnson 55ESL69A

    Your location ?-----Used parts may be easy to find.
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