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  1. merc850

    Merc Thunderbolt manual needed

    There were a lot of Merc 500's produced - you need to post the serial Nr.or a picture of the motor cowling. The "Thunderbolt" was produced in the early 1950's
  2. merc850

    stuck in neutral on 90hp due to shifter on console

    Those set screws are.........
  3. merc850

    Old merc outboard details?

    You need a tachometer to establish your rpm such as this one sold on this site 32905 - 4" Tachometer 7000 RPM's for gas Outboard engines. Perimeter-lighted white dial with bold black graphics black aluminum bezel and flat glass lens. All it has to be is alternator signalled. Sometimes a dealer...
  4. merc850

    1986 Mercury 90hp inline 6 carburetors spitting gas

    Here's the float setting, check them first to see if they're "fuel logged" - the hole that the fuel's spraying out of is the back drag vent.What is that hose that's hanging loose, for? There are also filters in the tops of the carbs; I had them in my engine and threw them away!
  5. merc850

    1969 Merc 110 Fuel Line Assembly

    From the same company, you should replace the diaphragm too.
  6. merc850

    Mystery part on drive shaft

    Grease the splines at least once a season before you spring launch.
  7. merc850

    1969 Merc 110 Fuel Line Assembly

    Cut off the connectors and replace them with these from oldmercs.com
  8. merc850

    1996 Mercury 125 - no reverse

    Do not shift into reverse without the engine running or someone turning the prop.
  9. merc850

    Prop size stamp?

    It looks to me like the exhaust gases will exit around the blades instead of thru the hub.
  10. merc850

    Prop size stamp?

    I've seen the pitch and diameter cast into the exit end of the prop.
  11. merc850

    Looking for a prop gasket for 2004 Mercury 8hp

    If you live in the USA you can use Amsoil Saber OUTBOARD at ratios from 50:1-100:1 I used it for years, they also have gear lube in a squeeze pak.
  12. merc850

    Looking for a prop gasket for 2004 Mercury 8hp

    If it was winterized/storage sealed that could be the oils running out or a poor type of 2cycle oil in the fuel mix.
  13. merc850

    Late 60s/early 70s StarCraft 16’ - Mariner OB shifting/idle problems

    The nuts that jam up the throttle and shift cables are loose and aren't locking the cables to the adapters, they might have been turning slowly over the years. Like Waterman said adjustment or cables and from the looks of the box end ones I would say new cables; have you ever greased the control...
  14. merc850

    Broken magnets

    No 25hp in 1976 the small motors go 4.0-4.5-7.5-9.8(110)-20-40 hp. It shows up in 1980 along with an 18, new to the lineup.
  15. merc850

    Service mariner 1989 60hp outboard

    "3 - During take out the plate from the carbs I noticed this hose which didn't had anything connected to it." I believe that it is part of the oil/crankcase bleed system, clean the screen and put it back into that hole. If you are going to run it as a constant use motor replace the thermostat...
  16. merc850

    Service mariner 1989 60hp outboard

    I'm saying that if you are going to turn the motor with the starter ground the plugs to the block. You can clean the pistons one at a time - when the rings are visible in the exhaust ports, just turn the flywheel.
  17. merc850

    Service mariner 1989 60hp outboard

    Somebody might have undone the bolts instead of using a puller.
  18. merc850

    Service mariner 1989 60hp outboard

    If you're going to be turning it over at starting speed to check things put the spark plugs in their boots and ground them to the block - I used a piece of solid copper wire. While the exhaust plate is off you could spray some engine cleaner into the cylinders, the pistons look like they have...
  19. merc850

    Trim hoses

    Ok you got me, I would suggest contacting a dealer with the part nr. and see what they have. Somebody here might jump in.
  20. merc850

    Trim hoses

    I thought the 1988 models used an integral trim pump/cylinder design which I see online, the hose models were from 1966-1976, maybe you should post a picture.
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