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  1. merc850

    What is float level on 1bbl carbs on Merc blue 850 or 85hp

    Re: What is float level on 1bbl carbs on Merc blue 850 or 85hp Here's the method watch that float spring height
  2. merc850

    73 Merc 850 Carb removal

    Re: 73 Merc 850 Carb removal Coil wire unscrews from cap, pulls from coil - slide the boot off the coil end then pull with pliers close to coil. I think you have to pull starter so make sure the harness plug is disconnected. Check your carbs if they look like this undo the fuel line and check...
  3. merc850

    Mercury 850 Water pump Impeller

    Re: Mercury 850 Water pump Impeller Here's the diagram: the Oring goes on the pump base and the tube goes onto the water tube and into the pump top.
  4. merc850

    Mercury 500 advice needed please

    Re: Mercury 500 advice needed please Have you done a compression test? The lo speed needles should be 1 1/4 turns out from seated to start, then adjusted to run properly under load. Tilt the motor all the way up and squeeze primer bulb until fuel flows out of carbs, this will show if you have...
  5. merc850

    Mercury 1150 rpm problems

    Re: Mercury 1150 rpm problems Check the carbs if you have this type check the filter screens
  6. merc850

    Early seventies Mercury 1250 Wont Start

    Re: Early seventies Mercury 1250 Wont Start No they were ahead by 2 years
  7. merc850

    1979 402 40hp not cooperating...again

    Re: 1979 402 40hp not cooperating...again If your carb is this type which I think it is then you should check the filters Here is the lever setup procedure
  8. merc850

    Water pump working...still no water...68 Merc 500

    Re: Water pump working...still no water...68 Merc 500 Here's an xray of a Mercury close to your year I would call a local dealer and see if the exhaust plate-powerhead gaskets are available, then pull the powerhead off and find out what's going on.
  9. merc850

    Newly acquired 1975 Mercury 850 85 HP outboard

    Re: Newly acquired 1975 Mercury 850 85 HP outboard I have the same engine and if all the wiring is good and no spark it is probably the trigger. If you are going to do a comp test you might as well check for spark at the same time.To check for spark ground all plugs and spin engine over. Here's...
  10. merc850

    Refitting lower unit Mariner 60-what grease is best for spline to stop binding up?

    Re: Refitting lower unit Mariner 60-what grease is best for spline to stop binding up Mercury makes an anti-corrosion grease that will prevent the salt water corrosion and sticks like glue - here's a guide to keeping that motor free moving
  11. merc850

    Tower of Power with stalling when put into gear.

    Re: Tower of Power with stalling when put into gear. If you have these carbs there is a filter in the top that can get plugged and cause that kind of problem.
  12. merc850

    hello good people, mecury 85hp blue band impellar prob

    Re: hello good people, mecury 85hp blue band impellar prob That sounds like the hole for the tell tale (see image) there should be a plastic angle fitting that attaches to a rubber hose, then to the cowling.
  13. merc850

    1963 mercury 100hp tower of power no spark

    Re: 1963 mercury 100hp tower of power no spark That motor has 2 sets of points, 2 coils, and 2 ballast resistors it is possible that the points are dirty here is a wiring diagram to help troubleshoot any power supply issues and here are 2 pages that describe the distributor , I would test for...
  14. merc850

    Early seventies Mercury 1250 Wont Start

    Re: Early seventies Mercury 1250 Wont Start Isn't that a wild looking rig!! [ Can't help admiring the condition of the boat/motor, if I lived near you I'd work on it for nothing, as it is you should get a manual to help you.
  15. merc850

    73 merc 1150 help

    Re: 73 merc 1150 help This is the tool that removes the bearing carrier nut a Mercury tool that you can buy, or you can carefully drill holes into the nut in 4 places 90* apart and remove them by prying apart. Done it. Here's the component picture from the manual You'll have to let a lot of...
  16. merc850

    Adding aftermarket VOLTAGE REGULATOR - anyone actually done this ???

    Re: Adding aftermarket VOLTAGE REGULATOR - anyone actually done this ??? Okay I have the same 16v output and I am planning to install this . Is this one of the bad ones that has been mentioned above? I think it's from a V6. If this burned out wouldn't it just let the rectifier put out the 16v...
  17. merc850

    Merc 500 Revival

    Re: Merc 500 Revival Are these the controls you have? If so the inner one is shift the outer is throttle. I don't know if they will work on your motor, you need the single lever Mercontrol.
  18. merc850

    Mercury inline 6 flywheel timing decal ???

    Re: Mercury inline 6 flywheel timing decal ??? Have you tried a dealer I found one at one of mine. Say, didn't I sell you a coil last year??? Here's mine on '75 850
  19. merc850

    Stuck Prop and Washer HELP !!!

    Re: Stuck Prop and Washer HELP !!! You could apply heat to the washer (brass, right?) then tap it around the perimeter. It should expand enough to loosen. Here's the lube chart to help stop that from happening again.
  20. merc850

    Keep it going!

    Here's a chart for your files, mabe if the PO paid attention to this our motors would be in better shape. . It was all there in the owner's manual but that was thrown away with the spare key.
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