Re: 1964 Johnson 90HP Engine Timing

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July 7, 2016 at 4:51 pm #39807
beerman57
Participant

    #21 up inside the inlet housing is a gearcase to midsection bolt. If you want to clean the carbs without disassembly, drain the bowls, get some OMC/Merc powertune or Valv-Tect marine motor de-carb (same stuff as powertune) and load the carbs with it, let is sit for a while, then start the motor. Starting it will force the powertune through all the passages, and hopefully get them clean enough without disassembling.