Recent content by Kargh

  1. K

    1976 Merc 1500 - Prop Replacement

    Performance issue you are trying to correct. None specific. Just looking for the best prop for the boat. Current prop is pretty gnarly - old and chewed up. Needs to be replaced. Current prop manufacturer, model, aluminum or stainless as a minimum. ​​Mercury (48-65588-19), aluminum Current...
  2. K

    1976 Mercury 1500 - What is this nipple / stem for?

    Noticed this on the motor the other day when I removed the fuel pump. Nothing is connected to it and I can't find any mention of it in the service manual or parts list. Is it important? Does anything connect to it? You can see it on the right side of the image.
  3. K

    1976 Merc 1500 - Post Carb Rebuild, Rewire Video

    Hello! Before I go much further with this motor or throw it in the water to adjust the carbs, I'd like it if those of you with far more knowledge and expertise than I would take an eyeball at my video and tell me if you see anything that stands out that might need to be changed, tweaked, fixed...
  4. K

    Wiring (Mercury) - Sanity / Idiot Check Please!

    Now that I sorted most of my wiring issues, I am to the point of wiring the control box with the new harness. I've traced all the old lines with the old (spliced together) harness, created a nice diagram, shook my head a few times, and then created a new diagram. I would appreciate it if...
  5. K

    1976 18' Hydrasport Bass boat - Wiring

    Quick question... anyone have a diagram for this particular boat? I'm wondering how it was originally wired (the accessories from the switch panel). Previous owner spliced into the wiring harness to add in the accessories but I'd rather not do that with the new wiring harness. The switch panel...
  6. K

    Mercury - Old (new) Wiring Harness, Newer Control Box

    I hope someone can help connect a few dots on this project. I have an old boat with an old 1976 Mercury 1500 on it. Recently I began redoing the wiring as the previous owners made a mess of it -- wires going to no where, cracked casings, etc. After examining the wiring harness I decided to...
  7. K

    WMK-22 Carb, Idle Tube Question

    I have what appears to be some sort of plastic, opaque bb that sits on the top of the idle tube. I'm guessing the idle adjustment screw pushes down on this as it is tightened, thus blocking the tube even more. I do not see this piece on any of the carburetor diagrams I've looked at. Can any one...
  8. K

    Back drag carb - Vent jets

    Carb Part #: 1368-5676 One of those fancy backdrag carbs. Mine happens to be WMK-22 but it seems the main part number is used in several of the WMK-xx carbs. Anyways, I've read, or so I seem to think I've read, that the vent jets should be removed and the economizer hose blocked with a BB...
  9. K

    Service Manual - 1977 Merc 1500

    Just a quick question, I have the Mercury service manual for models 1975-1978 (C-90-75512) but I'm wondering if there is a better or more updated manual that is preferred for working on this particular engine. Thanks!
  10. K

    1977 1500 - Cannot Lower Motor

    Hello! I hope someone can offer some advice. I've spent all morning trying to resolve this issue but so far, no luck. The motor is stuck in the up position and I cannot find any sort of manual relief valve on this 1976 or 1977 Mercury 1500. Is there one? If not, how would I go about manually...
  11. K

    Carb for '76 1500

    So I had sent an email to the boats.net customer service the other day to find out some information on a rebuild kit for the carbs in this old motor. What I got back was that they can't help me because the WMK-22 carbs that are currently in this engine are not the original. Hell, I just wanted a...
  12. K

    '77 Mercury 1500 Compression Test - #6

    Compression tested 1-5 today. All read between 128-135 but I cannot possibly get to #6.I have the OTC 5605 Deluxe kit and the ends on the hose don't spin freely (not sure if they are suppose to or not.. didn't want to mess them up by trying to force them). How on earth do you test #6? Is there...
  13. K

    Ignition Switch Bad?

    Hello Again, 1977 Mercury 1500 I bought the boat home this past weekend and decided to do some work on it. When I put the key in and turned it on, I had no power to any instruments, tilt, etc. Thinking it might have been the absolute disaster of wiring at the battery, I went through and...
  14. K

    1976 Merc 1500 - Engine Races While Turning

    Hello folks, New to the forum, new to boating in something other than a 12' aluminum boat, so I have a lot to learn yet. Anyways, last year I bought a 1977 Hydra Sport, 18' with a Mercury 1500. I had the engine serviced and tuned. It was always semi-easy to start but recently it has been...
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