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  1. M

    fuel pump and timing questions

    I have a 1972 merc 65 horsepower electric start outboard.My first question is about the fuel pump.I bought a rebuild kit and took off the housing and noticed there was only one check valve in place.It looks as though there are supposed to be two as there are 2 carbs,so somebody please 1 or 2...
  2. M

    Mercury 650 won't stay running

    its a 1972 merc 650 el,it will start with the spark advance all the way forward and continue to run however if you back the advance lever down the engine will die.Can anyone give me a direction to start in? Thanks in advance,
  3. M

    lower unit not winterized,how bad is it?

    I have a 1966 mercury 65 horsepower 4 cyl outboard.I thought I had drained the lube but I went out today to and discovered I had not.I thought maybe I would be lucky and drained the wated and filled with lube and started the motor it fired right up but when I shifted in gear I noticed the prop...
  4. M

    lost rpms

    I have a 1966 merc 650 65 horsepower outboard motor.I have been getting about 27 mph at 4800 rpm.The last couple times I had my boat out it barely would plane and at wot I only got 3150. I have a new fuel line from tank and new primer that pumps up and stays firm,the motor fires right up never...
  5. M

    1966 merc 650 wiring harness troubles

    I have had this boat for a little over a year it has a harness that runs from the control box and battery to a plug that goes into the side of the motor.The wires were all dry rotted and corroded so last year I replaced all wires from the ignition and battery all the way back about 6 inches from...
  6. M

    Do I have a problem?

    I have a 1966 merc 650 outboard.WOT is 25-27 mph.The boat is a deep v-hull fiberglass boat 15 ft.someone put a sloppy fiberglass patch right on the bottom of the boat where the v comes together,so I think I should sand that down and see if I can do any better and also see if that speeds me up...
  7. M

    Do I have a problem?

    I have a 1966 merc 650 outboard.WOT is 25-27 mph.The boat is a deep v-hull fiberglass boat 15 ft.someone put a sloppy fiberglass patch right right on the bottom of the boat where the v comes together,so I think I should sand that down and see if I can do any better and also see if that speeds me...
  8. M

    merc 650 starter troubles

    I have a 1966 merc 650 outboard motor with electric start with magneto ignition.serial number of motor is 18976529.my solenoid and starter have been giving me troubles for awhile and they have given out so to speak now.when I turn my key i get nothing.if i hold a screwdriver to jump around...
  9. M

    mercury electric start trouble

    I have a 1966 mercury 650,65 hp,serial 1897689.I just replaced the control cables and went to try the motor out with the new cables attached and the electric start would not turn it over at all,it was if there was no power.I took the control box apart,(its a mercontrol if that matters,} and I...
  10. M

    mercontrol throttle cable hook ups

    I have a 1966 merc650se motor.It has a 2 lever throttle control.The cables were cracked and rusted on the inside so I have new ones now and I was wondering,where the cables hook into the motor,you have one on top of the other,the top one works the carb and the bottom works the forward reverse,(I...
  11. M

    cable/pulley steering system question

    I have a 1963 Starcraft hull that has this type steering.The old cable was cracked and getting caught in the pulleys so I bought a new cable.I can't figure out how to run the cable at the steering wheel so it will work.On the backside of the s/wheel there is like a big pulley that the cable...
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