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  1. J

    1970s Merc 4hp--fuel gets into pump but not the carb

    Hi all, Working on a 70s Merc model 40 4hp. I'm not getting fuel to my carburetor so I disassembled the fuel pump, cleaned out the junk, made sure the passages were clear, diaphragm is intact. I pump the ball and nothing enters the bowl. I loosened the screws on the fuel Pump and squeezed the...
  2. J

    1975 9.8 model 110 cylinder issue

    Hi all, Been wrestling with this one for awhile. 9.8 runs great for 10 minutes, then power drops and it runs rough. All of a sudden it will kick back in to full power with a thud. Then it will happen all over again. I thought it was dropping a cylinder. Bad coil I'm thinking. Spark on both...
  3. J

    9.8 drops cylinder

    Hi all, I have 1983 Mercury 9.8 model 110 that runs and idles welll. Occasionally it will drop a cylinder and run on one. The other cylinder will randomly start firing again for awhile then quit again and so on. New spark plugs so I'm fairly sure thats not the issue. Any thoughts where I...
  4. J

    Won't go into gear after prop shaft replaced

    I have a 1975 mercury model 110 9.8 hp. I recently pulled the bearing carrier out to replace a damaged prop shaft. The new shaft was a used part but seemed in good shape. I pressed everything back in but now when I shift into forward or reverse it's not engaging fully and I can hear the gears...
  5. J

    Pitted prop shaft

    Hi all, Recently found water in my lower unit (1975 mercury 110 9.8 hp) and after Jerry rigging a tool to remove the bearing carrier, I find the oil seal looks intact. Bearings are good too. The surface of the prop shaft that should seal against the oil seal looks damaged and pitted. Could this...
  6. J

    Carb dump when tilted up

    Hi all, I have a couple older mercs (9.8 and 7.5) and I recently ran both in a barrel after repairs. When I tipped them up on the stand all the fuel in the bowl dumped out the carb throat and into the cowling. When I ran one in the river the next day fishing and tipped it up no fuel leaked out...
  7. J

    Fuel leaking from mouth of carb

    Hi all, I have a 1984 7.5hp merc and I'm noticing a bit of fuel leaking from the mouth of the carb. Enough that it will periodically drip out of the housing of the motor and into the water. I hate to leave a slick on the lake so I'd like to take care of it. Any ideas on how to fix this? Carb...
  8. J

    7.5 Mercury 1984 Not getting fuel

    Hi everyone, I have a 1984 Mercury 7.5 hp and I had a problem with my needle valve sticking open so I cleaned and rebuilt my carb--new seals, new needle valve, it's spic and span. The motor starts great and runs well but as soon as the fuel in the bowl runs out it will die unless I re-prime...
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