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    Oil leak

    Smell the oil to make sure it is not gear oil. Gear oil stinks like rotten eggs.
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    Awfull time launch & retrieve roller trailer

    I had a double bow stop on a trailer, and had the same issue. You can swap out the double bow stop for a single one. You can also adjust the winch stand forward/backward. Hopefully those adjustments will fix your issue.
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    1982/83 70HP 3 cyl fuel pump WATER line I.D. size?

    Hoses should be pretty standard. Can you take the old one to an auto parts store and see if they can match it?
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    how to determine the year 175 ocean pro

    A 1993 motor will have carbs, I would think. The e-TEC is a different animal.
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    Question/Advice: Fiberglass over old Fiberglass In Bilge Area.

    Don't put anything under the fiberglass. The new resin and cloth will seal just fine. The existing fiberglass just needs to be clean and a bit rough, to bond well with the new resin/glass..
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    how to determine the year 175 ocean pro

    N is counter rotation. That should be easy to see if correct. Look for a left handed prop.
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    how to determine the year 175 ocean pro

    The model or serial number gives the year. In your model number, that B is a strange character. Normally it is an "E" for electric starting. So a J175EXETR would be a 1993 25" shaft motor. The Crowleymarine site did not find your serial number either.
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    Thru hull

    Gee, a dab of silicone caulk and a clamshell cover is what is commonly used.
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    Fuel tank removal/ inspection questions 67 glastron crestflite.

    That is a pretty obscure model here in 2024. You might trace the fuel fill hose and fuel lines to the fuel tank. If that boat has spent any time in saltwater and has an aluminum or steel tank, which is likely, I expect it to be in bad shape. Most tanks back in '67 were steel.
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    My turn with a old boat that has a sudden loss of ALL battery power in a 45 year old boat.

    So you must turn on the bilge pump in order to start the engine? That could be an issue when you forget and need to start the engine to get out of a dangerous situation.
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    Question/Advice: Fiberglass over old Fiberglass In Bilge Area.

    Sand it anyway to get a "tooth" for the new resin to grab onto.
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    1979 40hp lower unit stuck

    My '77 1500 had a tapered pinon bearing w/o a pin. Is it a show stopper for the OP?
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    Sealing electrical connections?

    There are marine grade butt connectors, with shrinking, adhesive lined insulators. With the right crimping tool, and a heat gun they are waterproof. The low tech solution is wire nuts with silicone caulk. For all connections, it is imperative that no water collects around them, or it will...
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    aluminum wheels stuck to hub

    I would think Fluid Film would work as an anti seize in that application.
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    1979 40hp lower unit stuck

    Mercury has a combo lifting eye and flywheel puller. It has pipe threads which mate with the flywheel, and a bolt thread in the center that pushes down on the crankshaft. Here is Amazon source. Zinger for Mercury Mariner Outboard Lift,Flywheel Puller Removal Tool 91-849154T1,Lift Ring 91-90455-1
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    No spark on Merc 85hp

    The original floats were yellow foam. The alcohol in our fuel tends to dissolve them. Newer floats are hard plastic. They can crack and not function. Make sure the floats and float levers are good and set properly, respectively.
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    No spark on Merc 85hp

    Did you get the idle restrictor tube (idle jet) under the brass plug on the top of the carb? Did you clean the two or three the small holes drilled in the throat? Actually the '73 side bowl carbs also had a brass jet in the carb throat, if memory serves. The banjo filters under the caps on...
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    My turn with a old boat that has a sudden loss of ALL battery power in a 45 year old boat.

    Just so you know, battery cables can rot out under the insulation. They tend to bulge in that area. Also, I had a positive battery cable rot out overnight when it turned to blue/green paste. It was connected to the battery, was sitting in saltwater, and had a nick in the insulation. The...
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    No spark on Merc 85hp

    Well, if the carbs fill, but no fuel will go thru the jets, they are either clogged or do not have adequate air flow thru their throats. The latter would be unusual, if the carb base gaskets are good and the bolts are snug. If you remove the hex bolts at the base of the bowl, fuel should drip...
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    1979 40hp lower unit stuck

    I guess you could crack off the midsection. That would allow you to see into the spline area. You could try a blunt chistle on an air hammer on the crank and driveshaft and see if that can work the crank loose from the driveshaft. Alternate with heat and Penetrating oil?
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