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  1. merc850

    1980 Mercury 115 power trim wiring

    That switch circled is the tilt limit switch that you set for max trim after you set up the motor; this diagram is for the 3 button switch panel so you might have to add a switch for trailer mode.
  2. merc850

    convert outboard from manual to electric trim

    Drop the LU and remove the reverse lock cams from the shift shaft (be careful that you don't pull out the shift shaft) this allows you to set the tilt pin in any hole for proper operation. Grease the splines before assembly.
  3. merc850

    Surface gap plugs

    Can someone tell me what differences there are between the L76V - L77V - L78V spark plugs?
  4. merc850

    Kiekhaefer "Rocket" 7.5 hp Outboard KE-4

    Here's a complete one in 1975 that my friends owned, I think they still have it.
  5. merc850

    synthetic oil makes for easier starts on 90hp merc '99 model

    I have a 1975 850 and I use Amsoil at 70:1 - I also use their gear lube, the combination works very well. I have a 1960 Merc 700 (Direct Reversing [R.R ]) that ran for 10 yrs.on 100:1 Amsoil and the performance was outstanding - pulling tube/skiers and other boats; synthetic oil is also...
  6. merc850

    1974 merc 1150 idle adjust

    You have to adjust the throttle cable brass barrel to push the arm backwards, then push the handle fwd and see if the dist stops at the "max spark adv." screw; then push it farther to the "throttle stop" screw and make sure that the throttles are full open. Don't let the carb shutters act as a...
  7. merc850

    39082 Fuel Pump

    Since I don't know the pump style by the part nr. here are two pages from different manuals that show fuel pumps I don't know what manual you're using but you can see every pump uses 2 valves.
  8. merc850

    '60 Merc 400 runs great for an hour then starves for fuel

    If you're going to work on the magneto follow this diagram; the magneto is held on by 4 cap screws and can be replaced without removing the adapter.
  9. merc850

    Wits End on Lower Unit .Please Help.

    Did you follow this directive? Perfect Seal is available from Merc and can be used for many applications. Also, did you replace the O-rings on the carrier, the waterpump base and; tork the nut to 110 ft/lbs?
  10. merc850

    1984 Mercury Power Trim Wiring Help needed

    This diagram might be applicable if yours is the 2 ram type.
  11. merc850

    Can you help me to understand this explanation from CDI on my charging issue?

    Here's the procedure; there is enough room on the front cowl support to install it there - I don't know the part Nr. It is probably from a newer V6 motor.
  12. merc850

    Can you help me to understand this explanation from CDI on my charging issue?

    I had 16+v going into a new maintenance-free battery so I installed a Mercury regulator, very simple to do; and now I get 13.5v constantly. Here's the wiring diagram for your motor if you want to check voltages etc. I also installed a CDI (company) trigger and the instructions said to not exceed...
  13. merc850

    What's year my Mercury Marine outboard built?

    That rusty piece at the bottom of the swivel assembly looks like it's been cut and is interfering with the turning motion. It's supposed to be a strap that goes around the outside of the tube like Nr.11 in this image.
  14. merc850

    Mercury Mark 55A Questions.

    The original Mark 55 (photo taken in 1973)
  15. merc850

    Merc 40hp clicking noise

    I don't know if the new ones are the same as the old ones but here's a picture of the standard type from 1950 to 1980 the only thing that moves is the clutch dog - the F gear has ramps that engage and is spring loaded; shutting the motor off in F will cause the ramps to ratchet. Those gears are...
  16. merc850

    Blue Band Mercury 850 Serial Number

    The shift cable moves first then the throttle
  17. merc850

    Mercury 50 hp thunderbolt issues

    1969 Merc 500 parts are cheap and available from Mercury, if you replaced the check valves one goes in the valve body and one sticks up from the casting.
  18. merc850

    61 Kiekhaefer 500- no spark

    I wouldn't use aluminum wire it corrodes easily in a marine environment and it should be multi-stranded for flexibility; if this is really a 1961 it uses a magneto and if you have connected 12v to the post on the side you have burned the coil and points and condenser. This is what the magneto...
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