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  1. M

    Are Mercury starter 10 tooth drive gears all the same?

    I just had the starter rebuilt for my '89 Mercury 115 HP outboard. I intentionally had the starter rebuilt as opposed to buying a replacement because I wanted to make sure I had the same 10 tooth drive gear and the replacements seem to have gone to an 8 tooth drive. Even the Mercury replacement...
  2. M

    1989 Mercury 115 HP Flywheel Magnets

    Does anyone know how critical the spacing of the magnets in the flywheel are? I purchased a flywheel for my 115 HP that had the same part # stamped on it that originally came from a 60 HP. As it turns out the crank hole is too small. I'd like to transfer the 6 magnets from the 60HP flywheel to...
  3. M

    Mercury outboard flywheel part number 261-9007-c2

    Can anyone tell me conclusively if a Merc outboard flywheel has the part number 261-9007-c2 stamped into the steel on the top or bottom of the flywheel it is compatible with another flywheel with the same stamp? It seems that Merc has many part numbers for their flywheel depending on which...
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    '91 Merc 115 HP Temp Gauge

    I would like to install a temp gauge on my 91 Merc 115 HP. I already have the water pump connected and I am in the process of picking up the wiring harness for the Commander 2000 control for wiring the gauge (as well as the temp gauge). Does anyone know for sure if the temp sending unit is...
  5. M

    Is this the impeller/base/cover combination for Merc 115?

    I have a problem getting any water out of the tell-tale of a '91 Merc 115. Can anyone tell if the three attached pictures are everything needed for my water pump? I ask because I bought the motor used 3 years ago, replaced the impeller and possibly the housing and gasket/plate after purchase...
  6. M

    Grease on impeller and water housing

    I applied a thin coat of 2-4-c grease to both the water impeller and the water pump housing when I changed my water impeller. I now have no water coming out of the tell-tale when running on muffs (even after letting it run for approx. 2 minutes). I've been troubleshooting this for a while and I...
  7. M

    91 Mercury 115 HP Water Pressure Problem

    I have a 91 Merc 115 HP that does not appear to have any water pressure. I am testing with a muff, but also tested with the lower unit in a plastic tub filled above the water intakes. There is no sign of peeing and I just hooked up a water pressure gauge and I get zero pressure. Background: I...
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