Recent content by MM2SS

  1. M

    84 mariner 15hp center crank bearing

    Has anybody successfully disassembled the 15 hp crank assembly to replace the center bearing? it looked to me that it was pressed together and pinned. Been awhile since I had it apart, but I'm thinking that the pin does not go through and must be drilled out to separate the pieces to get at the...
  2. M

    why are new motors so quiet?

    What makes the new motors so quiet? It has to be more than better sound proofing in the cowl. Other than the obvious of bad crank or rod bearings why are the older motors much louder. "new technology" is not the answer that I'm looking for. My 15 mariner is not bad- tolerable. My 125 Force way...
  3. M

    older Mariner 15 HP

    I have an older, maybe 80's 15 horse Mariner that I thought was pretty noisy. So I opened it up and found that the top and middle crankshaft ball bearings are shot. It looks like the top and bottom bearings are available but not the the center bearing. Is this why they used to offer a crank...
  4. M

    120 timing marks

    My 120 flywheel has 4 timing marks. I know that the one that stands alone is TDC but the other three, in a group are not marked. Static? Dynamic?or degrees? Thanks for any help. My book shows a wheel with degrees.
  5. M

    Plugs fouling

    1201X90A Force outboard. Yesterday I had to pull my plugs twice and clean them just to start the motor. I have always thought that the motor was unusally wet around the carbs. Tilt the motor and it drips alot, but this may be the bowl emtying out through the main nozzle. If I choke it with the...
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