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  1. 3

    mercury 20hp cooling

    I am not sure I understand what should happen when I start my 1999 merc ob. Water does not immedeitly pee heavily out of the back of the ob, it is more of a spurt out (little water and air mix) . A few seconds after puting the motor in gear and moving the water begins peeing out with a nice...
  2. 3

    20hp cooling question

    Recently picked up a 1999 20hp merc ob and the lower unit was removed. The cooling tube (from the water pump to the power head) had been removed. One end of the tube is flared and one end is just a straight tube and I am not sure which end goes fits into the power head side. The manual I have...
  3. 3

    How often should you pack wheel bearings

    My brother has a 14 foot boat trailer that is 6 years old. He had bearing buddies put on so he insist that as long as you see oil and change it every 5 or so years that every thing is fine and there is no need to make these checks. Is this true.
  4. 3

    1958 30hp johnson running rough

    After new points, plugs, condenser, coils my 30hp started. Lots of oil/gas in water but sort of expected that at first. Took off and ran pretty good and figured I would have to make high and low speed adjustments. But it seemed to use a lot of gas (5gals in 20minutes) and the plugs were fouling...
  5. 3

    1956 30hp Johnson

    My motor started and ran after installing new coils, condensers and points. However it run pretty rough at low and high speed, no so much at high speed. Also wondering how to adjust the low/high speed "lean/rich" settings. Thanks for any help you can give me.
  6. 3

    Gaping between coils and fly wheel

    I have a 30 hp Johnson Seahorse Model # RDE 30. When replaceing coils is it necessary to cap the distance between coils and magnet on fly wheel? Also, can you tell me what plugs are the proper one to use and the gap. Thanks for any help.
  7. 3

    compression for my 30hp johnson OB

    Each cylinder has 120psi. Is this good?
  8. 3

    1956 Johnson sea horse coil information

    While looking for a no power problem I discovered both coil wires had some insulation worn off by the turning of the fly wheel. Not 100% sure if these are the correct coils. Does anyone have that information? It a 30hp. Everything looks in great condition. Do you think I could repair that worn...
  9. 3

    1956 Johnson 30hp

    After bebuilding the carburator (which I thought was the problem) I still have no power when I give it full throttle. It will start but idle rough, put it in gear and take off but only goes 5 knots top speed. Looking for some suggestions that may help me out.
  10. 3

    1956 Johnson Low speed/ high speed ajustment

    I have a 1956 30 hp johnson seahorse. Not sure where I should begin the setting on the low speed and high speed adjustment for the lean/rich setting. What is the correct oil mixture? None if this engine is being properly cooled, seemed to run a little hot when running in a barrell. Thanks for...
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