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  1. M

    Carb tuning - top carb not responding

    Hi, I performed a carb kit on my 1979 50hp 4cyl - S/N: 5336799 Afterward, when tuning the idle mixture, I noticed that when adjusting the idle mixture for the top carb, I get no response. The engine runs rough, and won't rev very high. I got a little improvement after adjusting the lower...
  2. M

    Throttle and idle controls

    Hi everyone. I'd like to adjust my console throttle controls. I have to move them a lot before the motor responds. In particular, the idle lever has to move about 50% before you notice anything, and the forward throttle about 90%. Reverse actually seems OK though. Is there a document...
  3. M

    Tilt/Trim 1979 50hp

    Still learning quite a bit about boating. Haven't put it in the water yet though. I keep finding things to do. I'm thinking the tilt function isn't working quite as it should. From what I can tell, this is something I should be able to do from within the boat and I should be able to lock it...
  4. M

    Impeller Replacement - Among other things

    I'm going to remove the lower unit of my motor. It's a 1979 Mercury 50. I found this part number: 47-89983T MOD EDIT - Remove competitor. It seems to be the one for my unit. It seems there should be a kit to include gaskets and other items that should be replaced while I'm in there. If so...
  5. M

    My first dumb boat question - 2 stroke, or 4?

    First time boat owner here. I picked up an old 79 Starcraft 18' with a Mercury 50HP motor on it. The motor, I'm told doesn't run, but at least the boat itself is in great shape. Of course, I'd like to see if I can get the motor running too. How do I tell if it's a 2 stroke, or 4? It's a 4...
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