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    M erc 650 Shutting Off, switching box or ?

    1969 Merc 650, ser.#2604844, shut down last week, once at WOT, one at idle, once at about half throttle, all on the way home from a long day on the Ocean where it ran perfectly. Never shut it off for 6 hours. Coming in it started to cut out just like you were turning the ignition switch on and...
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    fuel pump power, Merc 650

    Can a fuel pump in a 69 Merc 650 pump fuel from the bow of the boat, 20' to the motor? If no, could I install a low pressure pump near the tanks or any other ideas. <br /><br />Also does a universal auto fuel filter work ok inline on the fuel line? <br /><br />Sorry for the repost..my previous...
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    Merc 650 Fuel Delivery Fuel tank placement

    Merc 650 Fuel Delivery Fuel tank placement I am dealing with a '69 650, has run great, perfect. Last week I wired,solderd, in a new ignition wiring harness to the distributor. The old wires were really soft and starting to break off at the top of the distributor. <br /><br />At the same time...
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    Compare OB Power

    I have a 69 Merc 650 that moves my old dory at 26 mph, wide open. Time to modernize and would like to get s Honda. I have heard that the 1969 horespower ratings were measured differently then. I would really like to get the Honda 50 rather than the 75. Any calculated guesses how the new Honda...
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    Wiring 650

    Same motor as mentioned in above post. '69 650.<br /><br />On the wiring harness,plug side, above the wiring harness there is an electrical device, that looks like a heat sink, two wires, one from each end, are routed up into the top part of the motor, under the flywheel. The third wire, in...
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    Wiring 650

    Same motor as mentioned in above post. '69 650.<br /><br />On the wiring harness,plug side, above the wiring harness there is an electrical device, that looks like a heat sink, two wires, one from each end, are routed up into the top part of the motor, under the flywheel. The third wire, in...
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    Merc 650 Leaking Oil

    I have a '69, 65 hp runs great, starts easy, and trolls all day long. I have noticed a nice oil slick behind the boat though. Recently I lowered the engine from being in the the "up" postition for 3 weeks while at home and a lot of, looks like gear oil, drained from the exhaust chamber around...
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    Oil/gas Mixture

    I just bought a 1979 Merc 90hp. What gas/oil mixture for this baby?
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    1979 Merc 90hp

    Jus bought a 79 Merc 90hp froma dealer. what is the scouting report on this vintage. What should the compression be?
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    Scouuting Report on 1988 70 Yamaha

    I have a chance to ge this motor for $500, what's the scouting report on 'em. This iwaht the seller told me. Do most people disconnect the oil injection?<br /><br />"1988 70 hp Yamaha, Good even comp. 105 to 95 in all 3 cyl and runs. Motor has been repainted. It has powertrim and tilt. Oil...
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    Fuel Starvation and Other ?'s

    I am new to the board. Great Board. Read the whole forum last Sunday night. I have a number of questions regarding a '64 Merc 50 that was given to me for an old Dory that I have. I Have come to the conclusion that fuel starvation is a problem as it will not run with a load on it, in gear,at...
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