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  1. merc850

    1974 Mercury 85 - Stuck in reverse

    Re: 1974 Mercury 85 - Stuck in reverse This is what the shift cam looks like properly installed. The shift shaft turns CCW to operate the cam. Turn it CW 'til it stops then CCW 'til it stops again, this is FWD, turn it CCW again a few degrees and it will click into neutral. Do not shift into...
  2. merc850

    Mercury/Mariner - Forward Controls Wiring Question

    Re: Mercury/Mariner - Forward Controls Wiring Question Here's a wiring diagram in case you want to rewire. The three buttons on dash were the operating ones, I have the same system but I moved the control panel to the side of my seat for easier operation.
  3. merc850

    Mercury power trim motor help please

    Re: Mercury power trim motor help please What's wrong with it? you can work on the motor brushes etc! Sometimes the solenoid for up gets dirty, you can replace or fix that too.
  4. merc850

    1966 Mercury 650 Help Putting Back Together.

    Re: Average cost for rebuild? Re: Average cost for rebuild? Isn't there a bracket that the cowl knob locks into? I haven't seen it in your pics; I'm pretty sure it bolts to that.
  5. merc850

    1966 Mercury 650 Help Putting Back Together.

    Re: Average cost for rebuild? Re: Average cost for rebuild? Here's the wiring diagram, the rectifier looks pretty bad but it might be OK, the mounting bolt is ground and it has to be grounded to work. It looks like you have a magneto ground wire hanging loose that should be attached to the...
  6. merc850

    Mercury voltage regulator

    I was told that this is a voltage regulator, can anyone tell me how to hook it up to the old system of just stator/rectifier found on my 1975 Merc 850.
  7. merc850

    about ready to give this thing away...

    Re: about ready to give this thing away... There are fuel filters on one model of carb,if you have this type of carb undo the fuel line and check for blockage. My lower one was blocked so I removed the screen. There is a screen at the fuel pump anyway.
  8. merc850

    Mercury 115 coil question

    Re: Mercury 115 coil question Does your coil look like this? I sold one to Gomer80 and I don't think he's using it.
  9. merc850

    77 Mercury Trim Locker

    Re: 77 Mercury Trim Locker Does the motor have Power Trim? If it does there should be 3 trim buttons on the dash or on the control handle, if it doesn't then you should shift the motor into forward (not running) and tilt it up manually. There are two levers that lock it in the up position at...
  10. merc850

    Need help with connecting wires back to starter solenoid

    Re: Need help with connecting wires back to starter solenoid Here's the Mercury manual diagram - in addition to the wires I can see you also need a ground strap going to the choke solenoid and magneto. And the large black cable coming off the starter solenoid should be attached to a terminal...
  11. merc850

    1969 Thunderbolt 100 hp

    Re: 1969 Thunderbolt 100 hp Too bad on that one but it's the type you need, what's wrong with the motor, does it spin? put some oil in the reservoir and switch it on but be careful, if the hoses aren't connected and it works oil will spray out of the bottom fittings. You could check the brushes...
  12. merc850

    1968 50hp Thunderbolt

    Re: 1968 50hp Thunderbolt You can go to a Mercury dealer and see what's available for your needs paint, seals etc. and if I were you I would replace the timing belt, they get brittle after 40+ years! ; these guys can help with a lot of parts too...
  13. merc850

    1969 mercury 40 shear pin

    Re: 1969 mercury 40 shear pin Mercurys don't have shear pins,they have a rubber insert that gives on impact . On the diagram you need parts: 29, 28, 27. or similar. I think the washer with holes is the tab washer that locks the nut from turning. You bend the tab (28) that is in a notch of (27)...
  14. merc850

    mercury 850 outboard blue band not sure of the year

    Re: mercury 850 outboard blue band not sure of the year There is a screen in each carb and they might be clogged. It happened to me - same motor same year.
  15. merc850

    Purchased 1977 Mercury Thrunderbolt 1150 115 possible missing parts?

    Re: Purchased 1977 Mercury Thrunderbolt 1150 115 possible missing parts? Here's a view of the lower unit parts.
  16. merc850

    why I now drink

    Re: why I now drink I installed a CDI trigger in my Merc850 (and kept the OEM switchbox and coil) and asked CDI if it could handle 16v and they recommended using a rectifier/regulator 194 5279 I am using this just to be safe.
  17. merc850

    74' Thunderbolt with lower unit troubles...........

    Re: 74' Thunderbolt with lower unit troubles........... Here's a lower unit diagram as you can see the bearing carrier holds the reverse gear and seals off the unit.
  18. merc850

    1970 65hp Mercury...problems with killing batteries and dieing at trolling speed

    Re: 1970 65hp Mercury...problems with killing batteries and dieing at trolling speed Here's a general look at the waterpump/driveshaft assembly
  19. merc850

    1970 65hp Mercury...problems with killing batteries and dieing at trolling speed

    Re: 1970 65hp Mercury...problems with killing batteries and dieing at trolling speed Here's a page from a manual on testing rectifier I think yours is Fig. 3 model, this has been replaced with Fig. 4 model. To test the stator put an AC voltmeter across the yellow terminals you should see a...
  20. merc850

    Merc 500 Revival

    Re: Merc 500 Revival You're correct, I would replace the seals, Oring and bearing just to be safe, but if you don't want new bearings check the old one after removal to see if it is still good. A tool (maybe a bolt, head first) is needed that fits onto the inner race for pushing out the bearing.
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