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    Tach for 2-Stroke 3-Cylinder Outboard

    I would think teleflex would have one, as will any other tach OEMs. If you wanted a System Check tach, the choice will be narrower. Generally, tachs run off the stator pulses, and the stators have the same number of pulses, regardless of number of cylinders.
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    75HP No key start, no guages, no trim

    That fuse should only power ignition, gauges and the trim relays, not the PTT motor itself, I would think. It makes sense to trace the PTT relay wires from engine harness connector to the relays themselves. Look for any that rub on the block or cowling.
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    Switch Box Suggestions

    Generally, ADI ignition timing on those IL6 motors was: Idle pickup timing 0-9* ATDC Max spark advance 21* BTDC. On carbs, replace all gaskets and inlet needle and seat after cleaning. Check the floats for cracks, or just replace 'em. Initial carb idle mixture setting was 1-1/2 turns open...
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    75HP No key start, no guages, no trim

    Most Mercs have a fuse that controls power to the ign key. The ign key powers the starter solenoid, but not the ign. You might look for a blown fuse and the most important reason which is a bare wire rubbing ground or another kind of short circuit. If no short, the fuse would not blow.
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    FD-11 best way to fix shift connector cover threads that are stripped?

    Gee, how often do you take that cover off? Melted zip tie works for a few years, and it is so much easier than drilling and retapping.
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    Switch Box Suggestions

    Sounds like dirty carbs to me, as she ran at high speed for you.
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    Running Hot??

    Did you check/replace the thermostat? How about the poppit valve?
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    Prop help-1993 Mariner 30ELO on a 16' toon

    A faulty check valve in the primer bulb would tend to not fill the carbs with fuel, rather than flood the engine. Most 2 cycle motors are pretty resistant to flooding. You will want to replace the primer bulb, however. To start that motor, pump the primer 'till hard. Lift cold start lever...
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    Prop help-1993 Mariner 30ELO on a 16' toon

    On a related subject. Why is your crappy fuel line causing the motor to flood? How do you know it is flooding?
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    2008 Bayliner Element F21 Replacement Old Carpet

    Looks good. Most boats of that style do not have carpet. Was yours's snap in carpet?
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    Docking Aid

    The problem with using a docking aid like that crash net, is that you only have it at your dock. There will be occasions where you want to tie up at a dock without them, say gas dock, repair dock, restaurant, friend's house.... Wifey and you will therefore still need to know how to do that...
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    Running Hot??

    The thermostats are generally 140*F. The engine will generally run a bit hotter than that, say 175-190*F.
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    Tach setting for 90 HP 1990 3 cyl. merc outboard 6p?..sierra tach

    The Merc setting is generally 6C or 12P, whatever you have on the tacho.
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    system check tach question

    Engines of that vintage should have the system check tachometer DIP plugs plus ring terminals for the black, purple and grey leads to a standard tachometer. You might take a look for those, under the dashboard.
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    Docking Aid

    Gee, you said Wifey was line master. If she cannot cleat a single line when you approach the dock, she needs more training.
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    2019 Lower Unit Paint Chipping

    It happens on the Tri-toons because of the center pontoon creating a vacuum in front of the prop?
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    Docking Aid

    Gee, if you have someone to attach a line to the boat, you should not have any issues, nor should you need that "crash net". Once you get a line attached, use the engine to "walk" the boat to the dock.
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    2019 Lower Unit Paint Chipping

    Cavitation burn on the gearcase of a 'toon? I don't even get that on the gearcase of my speedboat. I do get it on the prop though.
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    175 Johnson PLEES issue

    Gee, not a nibble on checking the thermostats?
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    97 Johnson 90hp won't lower

    Some motors do have mechanical locks, even when they have PTT.
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