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    1992 johnson faststrike 150

    Are you sure the alarm is for overheat? 150*F is not overheating, as thermostats are 143*F. In addition, your motor may have a fuel restriction alarm on it as well as overheat alarm, plus the oil low alarm.
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    Trailer Painting

    How old is this trailer? I will assume you boat in freshwater, or just use the trailer twice a season, and slip the boat? Sandblast and then prime is best, but wire brush off the loose rust and prime those areas with rusty metal primer is pretty good. Brush on a nice oil based topcoat and you...
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    Covering Built-in Fuel Tank?

    I have a hatch over the tank sender, however, the anti-siphon valve, fuel line and vent lines occasionally need maintenance. The hatch is not near any of those. The tank has a full cover secured by 8 or 10 screws and is caulked. The bilge drain runs under the fuel tank, so any water that...
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    Covering Built-in Fuel Tank?

    Gee, make the tank hatch out of dry 1/2 pressure treated plywood, and seal it with poly resin. If it needs more strength, see if you can use 5/8" plywood. It should last 10+ years.
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    mounting my Mercury force 125 for repair

    As I understand it, you need a minimum of posts before you can upload pictures. You might retry it.
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    Ignition switch

    Does it have a distributor? It doesn't reeally matter as Merc harnesses work for both distributor ign or ADi ignition, but useful to know for troubleshooting. Wire colors on that old Merc should be: White - ign power red- battery +12VDC Yellow-starter solenoid power- goes thru neutral safety...
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    Mercury 50HP 4S won't crank

    Gee, I never saw one break. They are located inside the MerControl. A lug on the MerControl linkage closes the switch, allowing them to connect power to the starter solenoid, when in neutral. Maybe a wire to them broke?
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    Covering Built-in Fuel Tank?

    Gee, why ask for help?
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    mounting my Mercury force 125 for repair

    On my Merc V6, the PTT motor can be replaced with the motor still on the boat, but the steering cable needs to be loose, and the starboard transom bracket unbolted and moves out of the way. The engine should be sitting on the transom, or blocked to the transom to help carry it's weight.. The...
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    (Question) Easiest floor repair

    Generally you would sand the damaged areas until they are clean and sound. Wipe with acetone. Now determine if you need cloth, mat, putty or some combo to make the fix. Mat for thickness on repair that doesn't need much strength (good for decks) Cloth for repairs that need lateral...
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    Covering Built-in Fuel Tank?

    I would recommend you just screw down the fuel tank cover, so access to the fuel tank is maintained. Tank senders often break, anti-siphon valves can clog. and water and dirt can get into the tank and it is easier to get it out with tank access. I would make a cover out of plywood and cover it...
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    Mercury 50HP 4S won't crank

    Wiggle the throttle handle (R-N-F), while holding the key in the start position. Sometimes the neutral safety switch can stick.
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    Teleflex steering cable source

    Teleflex was bought out by SeaStar, if I remember correctly. Measure the cable.
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    100hp falters

    Gee, you had me 'till no crackpots Air leak in fuel line? Remove anti-siphon valve for test. Fuel line diameter is min of 5/16". What kind and quantity of fuel filters do you have? A lot of those Mercs went on SeaRays of that year. My SeaRay of that year had a fuel filter inside the...
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    Can you paint an outboard cowling with automotive spray paint?

    Strip off the decals, and wet sand the cowling. The Home Despot near me carries marine enamel in qts. White for the Johnny and black for the Merc, in one of those gravity feed spray guns did a reasonable job. New decals should be avail somewhere on the internet.
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    Bad Engine Ground?

    The main grounds do rust because of the block being made of cast iron. Unbolt the ground and file the mating area clean. While you are at it, you might add some additional grounds to the main ground and run them to the starter and alternator.
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    Linkage Adjustments

    See if you can get it adjusted properly. If not, the shift dog/gears could be worn. Make sure you have a solid forward. You can milk your way thru reverse, if need be. Remember reverse should only be used at low speed. if you need it at high throttle to pull your butt out of trouble, you...
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    Rewiring Quicksilver Controller

    Gee, Duke, that looks to be a file on your computer.
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    115 HP Mariner Overtemperature alarm at 5000RPMS

    You need to consult a real expert like Fazt, as that WOT water pressure sounds high to me. It is much higher than my Merc V6 or my Merc IL6, which are different from your motor.
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    Manual jack plate starting height

    Cyclops, Most novice drivers do not know to trim it up until they lose control. Kinda like how God protects drunks from themselves. On my speedboat, if she is only trimmed until the steering is light, she is safe. The steering needs to pull left, before she gets dangerous. Takeoff speed is...
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