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  1. K

    1971 25Hp Johnson complete power loss after warm up

    "I have an old 25R71S outboard "I have an old 25R71S outboard which starts well and has plenty of power when run from cold, but starts to loose power after 5 to 10 minutes at WOT. It gets slower and lumpier until finally slowing down to a complete stop. I have installed new Carb, fuel pump...
  2. K

    25R71S Powerhead removal

    "I need to remove the powerhea "I need to remove the powerhead on my old 25HP unit but I cant get at one of the bolts at the back directly under the Carbuertor. The only way I can see that I would be able to get at it would be to undo all 3 rubber mounts, but I havent been able to free the...
  3. K

    1971 25HP Johnson Carburettor problems

    "I have obtained a 1971 25 HP "I have obtained a 1971 25 HP Johnson outboard which seems to be running rich and producing much more smoke than I would expect it to (even for such an old engine). The plugs soon become blackened and oily after running for a while, even though the mix is at the...
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