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  1. mill686

    Part Numbers

    Looking to purchase a trim gauge for my 2019 F70. I know the gauge is a white face 6Y7. What harness do I need? Any instructions or pictures to aid in installation? Thanks. Greg
  2. mill686

    2004 Yamaha 50 ELRC

    Looking at a 2004 50ETLRC outboard. Was wondering if someone could tell me the correct part numbers for a binnacle control and multifunction tach that are compatible with this model year? Thanks. Greg
  3. mill686

    Spark Plug Boot Protectors?

    Can anyone tell me where I might find one of these spark plug boot protectors? Thanks. Greg
  4. mill686

    Midsection Upper Mount Seals

    Hey guys, I have an '84 50HP (6487117). Looking to replace some worn out gaskets and seals. Pulled the head to replace those gaskets, but found the old mounts have given up the ghost. Not to mention, the seals on the upper mounts were destroyed and leaking. I have them on order, have never seen...
  5. mill686

    Mercury Classic 50 VS Mercury 50

    What is the difference between these two, taking into account the two I am referring to are both from the mid 80's? Carbeuration?
  6. mill686

    Replacing kill switch

    I am replacing the toggle-style kill switch with a potted button/lanyard style. Does just the black/yellow wire get interrupted with this type, or does the black wire go to one side and black/yellow to the other? Simply go black to black and spit/splice only the black/yellow? Here is how it...
  7. mill686

    1996? Evinrude 70 3-cyl

    Can anyone post pics or links to wiring diagrams referring to this outboard? For a friend.
  8. mill686

    Reference Material

    Could you guys post descriptions or links on: How to test a rectifier How to test a coil How to test switchbox How to test trigger How to test stator Or any other electrical/ignition system diagnostics that could be helpful Would love to have these procedures for future reference on hand. Had...
  9. mill686

    Charging question

    I have an '84 50hp (4-cyl/#6487117). She has a rectifier. This outboard used to show voltage on my DF/FF at high throttle over 16 volts. Lately, she has had readings of between 14 and 15 volts. Outboard runs fine. Just wondering about this.
  10. mill686

    A little help

    It's been a while, because I have had no problems until now. I was out on the water the other day when I noticed my outboard started sounding like she was running improperly. Turned around and noticed no tell-tale. immediately shut it down and paddled home. I dropped the lower unit and...
  11. mill686

    Mercury 135HP Poor Pee Stream

    My friend mentioned that his Mercury 135 was pumping water very weakly. He purchased a new water pump kit. We dropped the lower unit and removed the older pump and impeller. The impeller still looked pretty good to me, but we replaced it anyway. This seemed to make no difference and the stream...
  12. mill686

    1984 Mercury 50HP Walbro Fuel Pump/Carb

    Uhh...not sure. So which one fits against #24, the black or gold? :-) My guess is black, and the gold goes in the middle of the three. Hey, I got a 50/50 chance.
  13. mill686

    1984 Mercury 50HP Walbro Fuel Pump/Carb

    When replacing the gaskets/diaphragms, there are two that are similar in appearance/cut-outs, but one is felt and the other is silicon/rubber (#'s23 in the diagram). Does it matter which one goes where? Thanks. Greg.
  14. mill686

    Prop Suggestions

    I have a 1984 Boston Whaler Sport 15 CC with a 50 HP Mercury 4-cylinder. It had a 13 pitch prop that generated 30MPH, but WOT allowed Ron's at 6000...way over operating range of 5000-5500. I have another 16 pitch prop that gets 33MPH, but Ron's at WOT only reach 5000. Hole shot is slow with this...
  15. mill686

    Stop/Kill Switch Question

    The following is how it is wired. I replaced all wiring, but did it just as it was from the previous owner. After looking at it now...could I just go BLACK to BLACK and have only the BLACK/YELLOW from the ignition going to one post on the toggle and the BLACK/YELLOWfrom the wiring harness go to...
  16. mill686

    Stop/Kill Switch Question

    I have replaced all electronics on my 1984 Mercury 50HP (4-Cyl) #64871**. After having done so, and the outboard working fine, I have had 2 occasions where she would just crank. I had seen somewhere before that mentioned removing the black/yellow wire from the switchbox as a diagnostic tool and...
  17. mill686

    1984 Mercury 50 (4-CYL) Coil Test

    Can someone tell me how to test coils on this outboard please?
  18. mill686

    Prop Suggestions

    I have a 1984 Boston Whaler Sport 15CC with a 1984 Mercury 50HP (4-CYL). It currently has a 13 pitch prop that allows the RPM's to go above the suggested operating range (5000-5500). The 13 will allow RPM's around 5800-6000 WOT. I get 30MPH with the 13, but thought I should get more. Seems like...
  19. mill686

    Overcharging Myth???

    I've seen several talks of this in the past. I paid attention to them because my '84 50HP, with upper-range rpms, shows a reading just over 16 volts. I was concerned until I saw this illustration. I simply have a rectifier (no voltage regulator). What's your take?
  20. mill686

    Prop Diameter

    Can anyone tell me what diameter prop fits my 1984 Mercury 50HP (4-CYL)? I don't see any markings on the current prop.
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