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  1. R

    3 line fuel pump PLUS pulse port on the back

    I would say it only looks like there is a pulse port on the back of the fuel pump.-----It is likely not connected to provide PRESSURE to the diaphragm !----Same pump housing casting can be used to make a 2 hose or a 3 hose pump.-----Post the actual compression test values after a test.
  2. R

    1981 Mercury 7.5 2 stroke

    ????----I can nor see or touch your motor.-----I have numerous rebuilt and parts motors like yours.----On some years there is a hole straight into the crankcase.----Plugged by the driveshaft and sealed by an O-ring.
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    1981 Mercury 7.5 2 stroke

    On some of these that hole is sealed by the driveshaft and the O-ring.-----Look in there.----Turn the crankshaft.----Tell me what you see.
  4. R

    Wells are drying up in Hunterdon, N J today.

    Not much different in many areas.-----Total amount of water available stays the same.-----Demand goes up with every new subdivision.-----Rain / snow water that does fall , does not soak into the ground.-----Drains off every parking lot into the rivers.----Millions of acres of farm land have been...
  5. R

    1981 Mercury 7.5 2 stroke

    This test would be overkill in my opinion.
  6. R

    1959 10hp Golden Jubilee HP upgrade?

    The 18 HP was bigger displacement.-----The best thing you can do is install 1961 to 1963 pistons and connecting rods.----These had a major improvement to a bullet proof needle bearing on the wristpin.
  7. R

    Impeller pump

    Remove #17.-----Push on and rotate #58,-----Part #45 moves to release the shift rod.
  8. R

    Impeller pump

    Find -----Crowley marine-----Find parts diagrams.-----Find hitch pin #17 , part #0330941
  9. R

    Impeller pump

    Keep the toolbox locked until you read the manual.
  10. R

    2000 30hp Johnson possible water restriction/over heats

    The 3 cylinder 25 / 35 HP use optical ignition.-----Temperature sensor is needed to control timing for warm-up on cold starts I believe.
  11. R

    Impeller pump

    Just STOP-----There is no bolt to take out.----Carburetors do not have to come off at all.------Find this hitch pin item #17 !!------I have done this simple procedure many times.
  12. R

    Impeller pump

    It is Item #17 part #0330941 on the STARBOARD side of the motor.----On that rod ( L-shaped ) lever under the bottom carburetor.----Observe and work carefully.
  13. R

    Impeller pump

    It is a HITCH pin that is removed.-----Not a cotter pin.-----Bell crank is pushed to port side of motor.----Rotated either to forward or reverse direction to release the shift rod.----Do not turn the shift rod during this work.
  14. R

    Impeller pump

    You need to remove a hitch pin on the bell crank that goes under the carburetors.----Requires a pair of pliers.----Then that lever ( bell crank ) is pushed to the port side and rotated to release the shift rod.----No other tools or hammer required to release the shift rod.
  15. R

    2000 30hp Johnson possible water restriction/over heats

    See post #26-----This should be so easy to sort out / correct !-----The pump housing on the 2 cylinder 20 / 25 / 30 HP looks the same but is not the same.----Get the correct parts and go boating !
  16. R

    2000 30hp Johnson possible water restriction/over heats

    0340811 is the part # for the seal ( grommet ) between water pump and exhaust housing.-----This should not be a big issue to install the correct parts.
  17. R

    2000 30hp Johnson possible water restriction/over heats

    The 2 cylinder 40 and 3 cylinder 25 / 35 are NOT the same set up at all.
  18. R

    1981 Mercury 7.5 2 stroke

    Place bearing housing on a tin can.-----Ball bearing down.-----Heat housing evenly with propane torch till bearing fall into the can.-----Gently tap needle bearing out while housing is hot.
  19. R

    1981 Mercury 7.5 2 stroke

    Those " holes " in the piston are machining centers.-----Absolutely nothing to do with oiling of this motor !----Lube holes are clearly visible on the piston.---Wrist pin has needle bearings.-----Heat helps remove bearings.----Perhaps a review is needed on the concept of 2 stroke lubrication.
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    2000 30hp Johnson possible water restriction/over heats

    ?????-----There is a separate rubber seal that fits on top of the pump housing !----You have the wrong parts.----Hurry to your local friendly boat shop and get help before you destroy this motor !----Note----I own more than one of these motors for parts / rebuilding
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