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  1. U

    Force 120 - No Thrust

    Has anyone out there experience this problem? I have a 1990 force 120 that doesn't seem to produce much thrust- can't get it to any faster than 10mph. Carbs been rebuilt,timing adjusted , lower unit checked and shifts fine, compression is between 125 to 140 on all cylinders, new prop hub...
  2. U

    Force 120

    Can anyone tell me the difference between a 1994 and 1990 force 120 motor. I have twin 120's (1990) but one is bad. I found a 1994 motor that is pretty reasonable. Can I replace the 1990 with the 1994? Will I have to make any changes ?? Mounting??? Any information would be greatly...
  3. U

    Force 120 blocks

    Ok another newbie question: Are the engine blocks and cylinder the same for a 1990 and a 1996 force 120? In other word, can I use the engine blocks from a 1996 force to rebuild a 1990? I have twin 1990 force 120 motors one is bad. And I have a complete 96 force 120 power head. I was hoping to...
  4. U

    Force 120 (1990) and (1996)

    I have a 1990 force 120 with some bad cylinders and a 1996 force 120 with a bad lower unit. Anyone know if the power head of the 1996 could be used on the older 1990 force unit? We took both apart and found quite a few differences as far as mounts and lower unit. Gear rod seem to be a little...
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