Recent content by zag123

  1. Z

    76' OMC 235 Sterndrive, No Forward - No Reverse

    I managed to lose my ability to shift my 76' OMC 235 sterndrive into forward yesterday. Shortly thereafter, I lost the ability to shift into reverse. First of all, I was pulling the kids on the tube and all was well. We paused and decided to run up to the damn. Once there, I dropped the tube...
  2. Z

    76 OMC 235 - Hard Shift Issue

    I've managed to tune-up my 76 OMC 235, updating the distributor with a points conversion, added a high-output coil, new plugs & wires. Rather than rebuilding the Holley carb, I purchased an Edelbrock #1409 marine carb. I made a few adjustments to the linkage to the carb, though mainly on the...
  3. Z

    Tilt Trouble - '76 OMC 235 w/ Selectrim

    I?ve been reading a lot about trim motor issues. None of them seem to fit my new problem. I?ve got a 1976 Cobalt with an OMC 235 with Selectrim. I had just finished tuning her up and replacing the points with a Pretronix kit, coil, plugs, etc when I attempted to raise the tilt (was hoping to...
  4. Z

    76 Cobalt 19' w/ OMC 235 Wiring Diagram Inquiry

    I just purchased a 76 Cobalt with an OMC 235. Everything seems to run ok, though when I inspected the boat I saw lots of spliced wire under the dash and in the engine wiring harness. Does anyone have a good diagram for this Cobalt so that I can spend some time ensuring that everything is wired...
  5. Z

    ESA Inquiry - 76 OMC 235

    I purchased a Pertronix Ignitor point conversion kit for my distributor. The instructions indicate that I must purchase and install resistors in the 12v lead going to the kit if I have shift interrupter. I don't know if they are referring to an ESA switch. Is the ESA the same thing? How...
  6. Z

    76 Sterndrive Gearcase Fuid Change

    So, I've been looking through my 1976 OMC owners manual for my OMC 235, trying to determine how and when to change the fluids in the upper and lower gearcases. I know how many ounces, as stated within the manual, but not sure who makes an equivelent gearcase fuild for these old electric shift...
  7. Z

    OMC 235 Slipping ar 3,900 PRM.

    I have a problem with my recently purchased 1976 Cobalt 19' Bowrider. It is equipped with an OMC 235 sterndrive. Initial checks were all good, so we put to the water. After thoroughly warming her up and checking for leaks, we got underway. I accelerated very slowly, up to 3,500 RPMs. After...
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