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    pdf service manuals

    There are some on the web for free. You need to poke around.
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    Outdrive Paint & Prep

    You want the epoxy putty to be applied to bare metal. Sand the OD, wipe with acetone and then quickly apply the putty. After it sets, sand smooth and prime with zinc chromate or etching primer.
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    Any saving the engine? I’m devastated

    Gee, I dropped a Fat Fifty in warm saltwater, while running on plane. She was under water for 60 hrs, until I found her. I hosed her down and pulled the carb, distributor and starter, baking the latter two in the oven for 45 minutes on 250*F. I squirted some heavy gas/oil mix into the...
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    One Stringer or Engine Block is slightly compromised Question

    Gee, at least sister up a piece of 2X lumber, with some bolts, if you have the clearance.
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    brass propeller Johnson?

    When did spline drive appear on Johnnyrudes? Mid 70's? Earlier motors were pin drive, I would think. Are you sure that is not an inboard sailboat prop?
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    1992 XR6 150

    Hydraulic steering is real smooth. If it springs a leak, it can get dangerous.
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    What size Fuel Water Separator? 1998 Mercury Force 120 HP.

    Any of the screw on oil filter like water separators will work. You want at least a 5/16" fuel line fitting, but 3/8" is best. The Racor's with the clear bowl are nice, but are more expensive, have two gaskets that can leak, and will deteriorate is left in the sun. I use the cheaper metal...
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    Any saving the engine? I’m devastated

    You are lucky it is fresh water. Drain the carbs, Oil the cylinders, hook up some fresh fuel and run her for 45 minutes to dry it out. Saltwater would require a tear down.
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    Torque values

    There is certainly a torque sequence and value. It sounds like you need an accurate service manual. See if marineengine has one for you. Why are you replacing the reeds?
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    1965 Johnson 6hp spark plugs

    They are a bit too hot for that motor. Since the motor is water cooled, it will probably (probably) be fine, but you should inspect the spark plugs for a greenish tint. If you see it, the motor is likely overheating, at least in the combustion chamber. For $5 you can put the factory...
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    Motor turning to the left

    It is normal for motors with right hand props to pull to the right. There should be a small fin above and behind the prop that is adjustable. Turn it CCW to lessen or remove the pull to the right.
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    One Stringer or Engine Block is slightly compromised Question

    Gee, you have the engine out now. This is the time to make all repairs, or you will be too lazy over the winter to pull the engine again, no?
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    No feedback helm question

    So the cable has the play? Some R&P systems had an adjustment screw Other than that, I am not sure.
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    1977 merc 150 outboard bogs at WOT

    I would think a 17 or 18P prop wpuld work, if the boat weighs what a 17 footer should. I ran that motor on my 16' speedboat with a 21P prop and could get 60+MPH. The hull is pretty flat bottomed.
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    No feedback helm question

    That sounds like a lot of play. I presume you are discussing a cable NFB system. See where the play originates. It could be the motor mounts or some parts of the steering system.
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    1979 70 hp choke issues

    I have no idea. Why would you want to find out? Maybe a new engine harness is in order for you. I have not looked specifically for your engine, but aftermarket Merc Engine harnesses are available at several places on the web.
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    1979 70 hp choke issues

    I would not worry about the mercury switch. It is only there to kill the engine, if it is kicked up when you hit something. Someone may have tossed it, thinking (and maybe it was) bad. Obviously trigger wires should be connected properly, if you want the motor to run properly. The carbs...
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    1992 XR6 150

    Pipe wrench on tube, or just unbolt the front steering tube from the transom clamp. I use a single cable on my Speedboat with a V6.
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    1977 merc 150 outboard bogs at WOT

    Pump the primer bulb while at full throttle. If it stays at high speed, rebuild the fuel pump. The fuel pumps on those are really taxed at WOT, so make sure the valves, diaphragm and pulse hoses are good, and the screen is clean. The pulse hoses have springs inside them to keep them from...
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    Switch box testing

    How about this? https://www.cdielectronics.com/wp-content/uploads/sp_uploads/controlled%20documents/installation%20sheets/is-114-7778.pdf#:~:text=Connect%20a%20Digital%20Multi%20Meter%20to%20the%20Ignition,one%20or%20both%20harnesses%20and%2For%20the%20Ignition%20switch.
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