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  1. merc850

    Why engine cut off when increasing the Accelerator?

    "Stop revving it up in neutral." (Maybe it's too late!)
  2. merc850

    Merc's 150 HP 2 Stroke EFI Motor.-

    Looks like the PO is a "run it 'til it fails" (then he'll slag Mercury for making a crappy motor) kind of guy! I bought a car ( a 2004) 3 years ago and it had the original plugs; I asked the owner why he never changed them and he said "if it ain't broke don't fix it"
  3. merc850

    400-650 Mercury Thunderbolt information needed

    I'm pretty sure Mercury never built opposed engines except for engineering exercises.
  4. merc850

    No Spark and Key wont turn the engine over.

    Isn't it usually in the control box? Turn the key to start and wiggle the shift handle around N at the same time.
  5. merc850

    New boater with trouble starting engine

    All I can say for now is check the battery voltage when starting, it should be 10-12v; also the cables to battery should be clean and tight with no corrosion.
  6. merc850

    Motor opinion

    It used to be said that if the cylinders are within 10 psi of each other you're OK, so maybe the gage is not accurate.
  7. merc850

    Fisher sv-19 gt w/ 150EFI prop pitch?

    The prop pitch is right when the motor is at full throttle and the rpms are within the max. eg.If the pitch is too low the motor will exceed the 5800 rpm limit, this is not good. Put the 19 on it and see what the max rpm you get - but only for a few seconds then note the rpms. I would say a 25"...
  8. merc850

    Fisher sv-19 gt w/ 150EFI prop pitch?

    All you need is a tachometer to show your present rpm then you can go up or down for the right prop - this is really the only way to match your outfit. A tach will also show engine performance, idle, max rpm etc. Any alternator driven one will work
  9. merc850

    Mariner 60hp motor identify help

    I've added some arrows to your picture to show some potential trouble spots, the worst one is the red arrow that points to what looks like severe corrosion that has destroyed part of the exhaust extension, this could be dangerous. The yellow arrows point to possible wiring corrosion issues.
  10. merc850

    1962 Merc 450 restoration ..

    Put the DS horizontally in a vise then put a rag inside the housing to prevent the wrench from hitting the side then turn the nut off, when it's off you can tap on the housing to knock out the shaft. The pinion gear will be loose and might come out first.
  11. merc850

    1962 Merc 450 restoration ..

    If that pump housing is made from aluminum it will need bathing with penetrating oil and heat for awhile; if it's plastic prying should be enough. To pull it with the driveshaft you'll have to undo the bearing carrier nut (the one the propshaft goes thru) pull out the reverse gear and bearing...
  12. merc850

    Water Outlet Tube Question 1976 Merc 110 9.8hp

    You'll have to join the club but they have parts and advice https://johnsoldmercurysite.com/phpBB3/index.php?sid=c1eedb7960442074f2594ee023b0274f
  13. merc850

    Water Outlet Tube Question 1976 Merc 110 9.8hp

    Have you tried a dealer sometimes they have them around, also that part Nr. might be superseded or is used on various years and models. They would know.
  14. merc850

    1962 Merc 450 restoration ..

    Why are you taking the recoil apart?
  15. merc850

    1977 Mercury 1500 inline 6 motor with distributor.

    I think that the throttle cable pushes the dist. to the idle stop and is adjusted by turning the brass barrel while in neutral. Push the bottom of the throttle lever to the back of the motor until the distributor hits the "idle speed" stop then look into the carb and see if all the throttle...
  16. merc850

    1977 Mercury 1500 inline 6 motor with distributor.

    I used a heavy grease in mine and when it was cold (less than 60*) it wouldn't advance enough to start, I replaced the grease with 2-4-C.
  17. merc850

    1962 Merc 450 restoration ..

    Yeah that's the only one I have but they just moved the assembly from the cowl in the older motors to that stand alone style.
  18. merc850

    1977 Mercury 1500 inline 6 motor with distributor.

    Remove the throttle cable from the arm that activates the distributor and see if ti moves freely; if not then the grease in the distributor adapter has probably hardened or is too heavy; if it does move correctly then the cable or the control box is at fault.
  19. merc850

    1962 Merc 450 restoration ..

    Yessir, flatten all the tabs around the nut then put a screwdriver in the slot and turn the nut clockwise. The spring is right under the cowling (in this case Nr. 3) so put your hand under it then remove the nut completely wear gloves and eye protection.
  20. merc850

    Mercury 90HP vacuum lines?

    Try Perfect Seal (Mercury product can be used on propshafts etc.) or Permatex Aircraft type they are sealant types without cement.
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