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  1. merc850

    115hp tower of power missing section?

    I can see the red coil from the late 60's early 70's Tbolt ignition so I'm assuming that era; there are only 2 fuel pumps on this motor. I also see that the bleed hoses which should run from the bottom bearing to the middle and top have been replaced and re-routed - hoses normally go from A to a...
  2. merc850

    Kiekhaefer Mark 58 Shift rod alignment

    Here's a picture of the shift shaft in neutral - remove the shift control cable, turn the shaft to this position set the LU to N grease the LU shaft and put it together; the reverse lock cam must be set right as well or it will stop the LU from moving up. When it's together adjust the shift...
  3. merc850

    Idle adjustment or throttle adjustment?? 1974 1150 TOP

    Here's the cable setup procedure; the shift cable moves first then the throttle with the cold start lever down
  4. merc850

    Mercury 40 4hp help

    My guess is the cover bolt for the high speed jet (Nr. 32) check that part 34 (fixed high speed jet) is in place before installing. Could be a spare for whatever reason.
  5. merc850

    Prop spinning correct way??

    Make this your desktop bkgnd. Don't shift into reverse without a.) engine running or b.) turning prop at the same time without engine running.
  6. merc850

    Need a expert on old mercs

    Looks like you'll have to make a pointer it's critical for the procedure; here's the timing decal layout find the 3 inline dots and measure for each key spot, (if you get some inkjet decal paper you can make your own decal). What retaining ring do you need the one that holds the lower bearing in...
  7. merc850

    40 hp Mercury switch box

    I can't find any SWITCHBOX tests that don't need a Merc tester, the trigger test using a jumper will show a bad box too, use the "no spark or intermittent" paragraph
  8. merc850

    CDI box question

    You'll need a rotor and shaft that fits the housing, the rotor is molded onto the shaft so you can't just pull it off. Before you try to re-engineer it try a dealer or this place http://americanoutboard.com/shop/shop.htm get all the parts including the switchbox.
  9. merc850

    1978 Mercury 500 50 hp No Spark

    Well that makes it a 1975 or earlier - a serial Nr. would help - here are the test values
  10. merc850

    1978 Mercury 500 50 hp No Spark

    Are you sure it's a 1978? Here's the wiring for a 1978 which is different than a 1975. Which post did you touch?
  11. merc850

    CDI box question

    I've never seen that assembly and I don't have the 1967-1974 manual, it sort of looks like someone adapted a trigger from another model; this could be a factory modification. In 1967 that model was available with a magneto or TBolt - you have the magneto adapter on the top and TBolt? trigger...
  12. merc850

    Kiekhaefer Mark 58E Lower Unit Questions

    Here's the greasing instructions
  13. merc850

    1977 Mercury 115 rebuilt and video for idle run, suggestions please

    Water cools all the exhaust areas and comes out of the "holes" you are looking at. Study this cutaway the exhaust goes down the "tube" and water surrounds it.
  14. merc850

    What is a "Merc 300"

    Yes it's a 1960 35hp, comp. for those motors should be approx. 110 psi. An old motor is only a good deal if it includes controls, prop or you have another one or source for parts.
  15. merc850

    1st boat 73 merc 850 wont rev.

    Trigger T/S
  16. merc850

    50 HP Mercury fuel delivery problem

    If the bulb is working properly it should pump fuel with the connector detached and inflate after each pump, the same will happen when attached to the motor but after a few pumps it will stay hard. The check valves in the bulb open when the motor is running to let the fuel pump draw fuel thru...
  17. merc850

    1976 Merc 850 4 cyl Tach Pole?

    6P and you have to hook it up to one of the YELLOW/RED wires on the rectifier not the red one and make sure it is well insulated, connect the power lead to a switched + and the - to any good ground; these connections should be under the dash somewhere.
  18. merc850

    1150 power trim and tilt hoses

    You can adjust the limit switch so that the motor stops at at the right out angle using just the "out" button. This has to be done on the water Loosen bolt "C" in image and turn "B" all the way in - trim the motor all the way in and accelerate to full throttle then trim it out until the motor...
  19. merc850

    1974 Merc 200 20hp pull cord broke

    Just keep all the parts together as 1 unit.
  20. merc850

    Mercury 80p

    The proper sparkplugs look like this; the black connector is for the electrical hookup from the control box, if you didn't get one with the boat go back to seller and demand one. The compression should be 120 psi and the difference between cylinders should only be 10%. I don't have a good...
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