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  1. C

    24v charging

    Gee, why not connect the batteries in parallel for charging, and in series for running the trolling motor? I would think a battery switch would be able to do that.
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    where does this plug in?

    Generally the tan and tan with trace are alarm wires. They would go to the warning buzzer and it's logic. Black is ground. Not sure what brown/black is. It is unlike the wiring on my '98 Johnny 150HPV6.
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    Soft spot in floor. 1998 cobalt

    You need to look. My '88 SeaRay was part of their ascendency to be a leader in the boat building industry. On another day, one of the strakes cracked and leaked on a normally rough day in the bay. I was stunned. I think it was bad quality control. My boat was much older. but you cannot take...
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    Storage on land

    Gee, trim switches are usually wired thru a dedicated fuse or direct. Trim is a often a live or death situation, IMO. You cannot have them blow a fuse in heavy seas, for no good reason. Of course, if they short out that cannot be avoided.
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    Confusing cooling issue...

    Thermostats also do not last forever. if it has been 8 years or more, you might check/change it as well. Most modern Mercs have a thermostat for low speed cooling and a poppit valve for high speed cooling. Since you motor runs cool at high speed, the poppit is likely fine.
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    Confusing cooling issue...

    Mercury Impellers can do that. You will likely find damage along the bottom of the impeller, causing it to pump inefficiently at low ROM. Replace the impeller, wearplate and 2 gaskets at a minimum. If the SS cup is scratched replace the water pump cover. If the water pump base is melted...
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    Storage on land

    Gee, I do not like the way that boat is wired. I would recommend that the accessories be wired thru switches on the dashboard. They do not need their own switches, as you will be using several of them at a time. Pick an appropriate rated switch or switches and wire them to it. Shut that...
  8. C

    Lift OR Floating Dock

    Gee, that looks like it is pretty protected from waves. Waves are all you should really care about, and what a lift removes you from. You can tie the boat off on 4 corners, using snubbers and perhaps mooring whips (if you need them). You can face the bow out to cut the waves as well. Putting...
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    Transom length

    You would need to measure it. Likely 20" or 25"
  10. C

    Shim material for swim step bracket

    Gee, I would think the Walmart plastic cutting board ($5) would last forever. The question is the thickness, IMO.
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    1989 Mercury 2.4 Black Max 200 Service Manual

    For exact carb jet sizes you will need a factory service manual, and that may not be detailed enough. A place like Crowleymarine will tell you all the possible jetsizes for your motor, which should tell you if you are running some set of correct jets. My Mercury non-year specific service...
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    89 150 mariner lost top end replaced burnt rectifier ran ok for ten minutes and then lost top again , but rectifier looks ok

    Do you have spark to all cylinders? That motor has 1 stator, 2 switchboxes and 3 triggers. The stator has both low speed and high speed windings. I believe the stator switchover to high speed windings is about 2000 RPM. You will therefore need to test spark at high speed as well. Lost...
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    Shim material for swim step bracket

    Gee, flat shims? Aluminum plate, big washers, a piece of a walmart plastic cutting board, lots of stuff could be used.
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    89 150 mariner lost top end replaced burnt rectifier ran ok for ten minutes and then lost top again , but rectifier looks ok

    If the engine runs well with the rectifier disconnected and poorly with it connected, suspect that the rectifier is shorted to ground. The stator charging coils and the stator ign coils share a common steel core, so they are capable of influencing each other's behavior.
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    90 Etec tilt and trim pump leak

    Look up the rebuild kit OEM part number on Crowleymarine, and then see if an aftermarket kit is avail. The kit for my '98 Johnny 150HP motor is $100 at Crowley.
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    Shifting problem

    I would remove gearcase and set it to neutral. Also set the control to neutral and reinstall. The reason is that neutral is a single point, vs forward which has a range for the shift lever to move. You can install the gearcase with the control set to forward, which is also a single...
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    89 150 mariner lost top end replaced burnt rectifier ran ok for ten minutes and then lost top again , but rectifier looks ok

    You can disconnect the yellow wires at the rectifier and insulate them. Now the condition of the rectifier will have no effect on the ign system. Remember that the battery won't charge, so this is for test purposes only.
  18. C

    Water Temperature Sending Unit

    On my '93 V6, one could pull a threaded brass elbow out of the thermostat cover and install a tee and sender. You would not know temperature until the thermostat opens, but you would see her overheat, if the 'stats are good.
  19. C

    Shifting problem

    Gee, look at the yoke area, just above the gearcase. See if the upper and lower shift shafts are mated.
  20. C

    Water Temperature Sending Unit

    My '93 Merc V6 came with a overheat sensor on one head and a temp gauge sender on the other. You might check your heads. Maybe you have a plug, if no sensor.
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