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Type: Posts; User: haventaclue

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  1. Re: 1981 Mercury 115HP 6 cylinder will start and run only on start circuit

    The brown wire is your tach signal,it will only work on the brown terminal if the tach is a specific to Merc,old style.If your tach is Faria Teleflex or other modern,then you need to put the brown...
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    Re: Mercury 50hp 2stroke/ low on power

    Were the fuel lines that were replaced,have a 3/8" / 10mm. bore? Too small and you get restriction.5/8" or 8mm will do but I prefer to go that wee bit OTT.
  3. Re: 1981 Mercury 115HP 6 cylinder will start and run only on start circuit

    Your 115 is 1973,is this the wiring diagram you are using? https://maxrules.com/oldmercs/Wiring/1966ona/35.jpg .
    I suggest you start with a compression test,spark jumping 7/16" and check that the...
  4. Re: 1989 Mariner 150 High voltage output at high speeds

    It sounds to me as though your rectifier/regulator is faulty,not unknown for new to be bad
  5. Re: 1971 mercury 800 thunderbolt needs help

    Disconnect the mercury tilt switch and try again,then check the coil,dissy cap for cracks and the little spring loaded carbon brush in the middle
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    Re: Have Serial Number, Can't Find Engine

    That is a 1975 number.For which year I can't see a 75HP listed. Have a look for a silver disc in the block for a number or even the starter bracket.Someone may have replaced a damaged swivel bracket...
  7. Re: 1971 mercury 800 thunderbolt needs help

    I have a '69 of these Mercs,bulletproof,wiring diagram, https://maxrules.com/oldmercs/Wiring/1966ona/30.gif Also meant to say those CDI harrness are generic and if there's an extra wire just tape it...
  8. Re: Tacho problem with a 60 HP 3 cyl. 2 stroke year 1996 engine

    Check your rectifier/regulator would be my first thought
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    Re: Trim/Tilt not working

    Swap relays to see if the problem follows,if it does,up relay done.
  10. Re: Newbie needs some help with an old Mercury 500

    50:1 is the correct mix.And I like to see wet plugs as you know there is lubrication on the cyls.
    First is check spark jumping 7/16" Best to use a spark tester though I made my own up before I...
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    Re: Freebie, need ID

    '94 is the year and 50:1 is the mix.Lower unit oil 80W90, would be better if designed for marine use,non foaming,I think GL5 gear oil is in that bracket.
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    Re: Wiring diagram

    So a 1982, https://maxrules.com/oldmercs/Wiring/1966ona/60.jpg And if it's black,yup it's a ground,so the nearest part of the block you can nail it to will do the job
  13. Re: Prop hit cement and wouldnt start afterwards

    Should still start regardless if the lower unit was damaged.
    Does the engine still turn over? If not can you turn the flywheel by hand? To eliminate a damaged gear jamming the drive shaft.
    If...
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    Re: Cooling Problems Mercury 115

    Water should come out at idle.Did you allow the engine to reach normal working temperature and the 'stat to open? May take a minute or two
    You could pull the 'stat,run it for a minute to see if...
  15. Re: Mercury Fuel line Clamp Removal/Install Tool

    Crimp o clips and I just use wire cutters to close them as well,but if you like tools, https://www.youtube.com/watch?v=T83W2QrYGbM ;)
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    Re: Cooling Problems Mercury 115

    At this stage I would start with a compression check,you may have overheated,hope not.
    The tell tale may have a bit of dirt in it,poke it with a bit of wire/weed eater string or blow some air...
  17. Re: Prop hit cement and wouldnt start afterwards

    Engine year, size will help to diagnose.
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    Re: Wiring diagram

    https://maxrules.com/oldmercs/Wiring/1966ona/70.jpg Engine side,What colour?
  19. Re: Mercury 75 2 Stroke Oil Injection Delete

    Here's a link to a manual, http://www.marineengine.com/manuals/seloc/mercury-outboard/seloc-marine-manual-1416.html .There are quite a few threads about deleting the injection but,IMHO, wouldn't...
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    Re: Reverse lock-out shaft

    You could be missing your reverse lock cam,or it is installed back to front,number 55 in this diagram...
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