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  1. J

    Lower unit lube on 1975 OMC 4hp??

    Looking through an actual 1975 Johnson service manual for models 4w75 and 4r75, not a Clymer or Solec aftermarket manual. In 1975 Johnson recommended either OMC Sea-Lube Premium Blend Gearcase Lube or GM Dexron transmission fluid. I've been using Citco 90 weight marine gear lube. Obviously a...
  2. J

    Gearcase lube leaking around propshaft '75 4hp Johnson

    1975 Johnson 4w75a 4hp weedless drive. Lower unit seems to be leaking gear oil. Found fresh gear oil on prop shaft and on plastic/rubber splines behind prop. Am I right in assuming the bearing assembly needs to be replaced?
  3. J

    Tuning carb on '75 Johnson 4 HP?

    I have done a search and read some of the FAQS. However I really want to make sure I have this right. Outboard is a 1975 Johnson 4hp weedless model 4W75A. I need to fine tune the low speed and high speed needles. I have read the "carb needle adjustments" article written by Joe Reeves. If I am...
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