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    Johnson Super Sea-Horse 40 Electramatic

    Iboats has the Type-C oil that you need. https://www.iboats.com/shop/sierra-gear-lube-type-c-32-oz-18-9620-2.html
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    Evinrude Big twin 40

    Big Twin is manual shift. Electric shift is Lark. Any 80-90 wt outboard gear oil is ok for Big Twin.
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    Johnson Super Sea-Horse 40 Electramatic

    Read post #16 again.
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    Johnson Super Sea-Horse 40 Electramatic

    RD models are manual shift, RK models are electric shift. So, obviously, anything related to the shift in any way differ between the two.
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    Johnson Super Sea-Horse 40 Electramatic

    My list says that is a 1966 motor. Not much different than a 1968 anyway. Yeah, a group 24-size marine battery will be fine.
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    will 18hp elec start fit on 25hp?

    Well yes and no. You will find some differences in things like the electric choke, and wiring etc.
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    1963 johnson 40 hp electric

    Looks like somebody has hacksawed a screwdriver slot in the end of the needle to adjust it. I think I could continue to adjust it that way for less than 70 bucks.
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    1963 johnson 40 hp electric

    Tuck those coil ground wires back so they don't rub on the flywheel hub. Polish the crankshaft taper and flywheel taper shiny bright. Install flywheel with tapers dry. Use a torque wrench to tighten the nut to 100-105 ft/lbs
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    Too much smoke

    Get it out of that tub and on a boat on the lake where it was designed to run, and run the p--- out of it. You may find it will be much cleaner.
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    Evinrude 35520 exhaust seal

    Nope, seepage there can be considered normal, at least in the sense that there is nothing to prevent it.
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    1972 johnson 25 hp seahorse shift problems

    Yep, agreed.
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    How long fuel line

    Heck,, you could run it much longer. Longer than any boat you would power with a 20hp.
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    1972 johnson 25 hp seahorse shift problems

    Does "pops into neutral" mean the shifter actually pops back to neutral position? If it does, your clutch dog likely is badly worn out,
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    Gasket Sealant

    You don't need any for that particular application.
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    33 hp Johnson no spark

    Use that Fluke to measure the resistance across the points. should be zero Ohms when closed---not an Ohm or two---zero. And infinity when open. These assume the coil and condenser are disconnected from the points.
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    Need help with tachometer

    This one should work, less than 80 bucks, brand new. Why go elsewhere? Disclaimer: I have no financial interest in i-boats. Verify fitment before purchasing. https://ww2.iboats.com/SeaStar-Black-Sterling-Signature-Series/dm/cart_id.737545197--session_id.873875322--view_id.392047
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    Need help with tachometer

    NO. That tach is for motors that have breaker points and it counts the times the points open per rev. Your motor has no points and a tach for it counts the alternator pulses instead. BTW, the e-bay tach you found is kind of a rare find.
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    JW-10 will start, then die.

    See post #4
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    Help with evinrude 35514 repair

    Remove E-ring #91 and washer #45, then #70 will slide out. (1st picture) Now #34 will wiggle out (2nd picture)
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    JW-10 will start, then die.

    1. Has the flywheel been removed lately? Was it properly re-installed (dry tapers and nut torqued to 30 foot lbs) ? If not,, it may have sheared the flywheel key. 2. How do those coils look? Your symptoms strongly suggest old, cracked coils.
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