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    Best Method for loosening stuck bolts.

    It is never good to break a bolt. Mostly because they usually break at the first thread, which is usually flush with the block. Then you are drilling a SS or Steel bolt, in an aluminum casting. That is very difficult to do well. Take your time, use lots of penetrating oil and heat and say a...
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    electric outboard, 350 Hp

    Really, 60MPH on a tritoon? include me out of that test drive. Some years ago, there was an inboard ski boat with electric propulsion. You could ski for an hour and then recharge overnight. I doubt current solar panels can recharge that 350HP electric motor batteries, in any reasonable time...
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    Best Method for loosening stuck bolts.

    Heat is good. I have heated bolts and then sprayed them with a penetrating oil. As they cool, they tend to suck some of it into the bolt passage. It is good to heat the block to help it to expand and loosen from the bolt shaft. Also, use a 6 point socket or box wrench and loosen them just a...
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    electric outboard, 350 Hp

    Sure, take that electric OB out into the ocean, and let the weather blow up, where it takes 3X the expected time to get home......
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    Query about raising outboard 6" on transom

    OK, The zinc anode is clean and bare? You could add more anodes. There are ones that screw onto transom bolts, and other universal ones as well. Alternatively, maybe there is stray current in the water? Do you moor in a marina with boats with shore power? Do you have shore power? Leakage...
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    84 Merc 115 I6 rectifier

    OK, not sure what to say. Rectifiers usually do not break if they are connected properly. You can check them with an ohmmeter. Search for the procedure to test a bridge rectifier. You check each of the 4 diodes for continuity one way (on the meter), and no continuity the other way.
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    Query about raising outboard 6" on transom

    The aluminum of the PTT unit should not get eaten away when moored in saltwater. You should have a zinc anode on the motor, usually under the PTT unit. You are not using copper-based antifouling paint on the motor, right? If that blue paint on the gearcase is copper based, it will eat away...
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    84 Merc 115 I6 rectifier

    Rectifiers will blow if they are disconnected from ground or the battery, and the engine is running and the stator is putting out battery charging voltage.
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    1993 Mariner 75 hp lower pivot shaft seal replacement

    The term seal is used loosely, in this application. There is a bushing, that is plastic and needs grease. You need to keep pumping grease into the swivel shaft to keep her from rusting up, as the '93 motors had steel (not stainless) swivel shafts. That was changed in the newer models. Not...
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    1988 Mercury outboard won’t trim up or down

    Some of those replacement PTT motors have an adaptor that allows the motor shaft to drive the pump. If that is not installed, the motor just spins. The motor should not stick into it's mounts. You likely need to remove it and see if it truly drives the pump. I normally needed to remove the...
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    Fuel leak/ affecting plug?

    It is very difficult to understand your question, at least for me. It seems obvious that fuel from the tank leaked into the bilge of the boat. The source of the leak must be found and fixed. Replacement gaskets for the gauge senders are available. You may also need to buy or make a gasket...
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    Key switch / Ignition issue

    If you have the slave solenoid, you can jumper it and see if the starter turns. You will want to find the battery power on the secondary winding, and connect that to the primary post that would receive power from the ignition switch. Jumpering across the slave solenoid secondary winding proves...
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    Question: Sealing underneath sub-floors

    All wells must have a drain to let water out. My boat has the keel of the hull open, acting as a gutter to drain water from the front fishbox to the bilge. A lot of fiberglass hulls do not actually have keels, but rely on the shape of the hull to provide the necessary strength. That...
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    Key switch / Ignition issue

    I faulty neutral interlock switch could cause your issue. However, some MerCruisers have a slave solenoid that is activated by the ign switch. This solenoid then activates the starter solenoid. If the slave solenoid is bad, the starter solenoid will not activate under influence of the...
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    XR6 to EFI

    Why not just run the XR6?
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    Coil spark strength

    Spark looks OK. Do you get spark out of distributor, thru sparkplug wires, at the right time? Did you remove the distributor, when servicing the carbs? Spark plug wires, dist cap and rotor are normal maintenance items on Sterndrives.
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    1988 Mercury 50HP - mercury tilt kill switch

    You may find that some of the wires in the MerControl are in need of rehab. Alternatively, your ign key switch could be bad. This summer I finally had to rewire my '77 MerControl. Not a bad job, provided you have a heavy duty soldering iron and lots of flux. The Keyswitch is still the...
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    Which Motor To Use

    The only meaningful difference is that the 140 likely has Back-Drag carbs. I never had an issue with them, but some think "thems the devil hisself", and disable them. They may give you some economy over the 135 HP motor. There are also some block port changes. The 140HP motor has the newer...
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    Mercury Remote Control Assembly

    Mark, He is talking about a MerCruiser Sterndrive. Evens, Check the shift cable boot. When they leak, the lower shift cable can corrode, limiting its ability to retract. This can affect reverse.
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    Holeshot repaired - Now Surging

    The surging you describe sounds like a fuel delivery issue. You could try pumping the primer bulb at high speed and see if it collapses or if the motor runs better. That will cinch it as a fuel delivery problem. if the primer bulb collapses, the fuel tank vent is likely the culprit.
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