Recent content by Chris1956

  1. C

    120 MerCruiser 74'-77' trim pump wiring questions

    If your trim limit switch has been jumpered out of the circuit, it means either it broke or when the engine control was replaced, and the new control did not have a trailer button, and as such, it needed to be bypassed. You might put an ohm meter on the trim limit switch. It should show zero...
  2. C

    120 MerCruiser 74'-77' trim pump wiring questions

    Gee, run the test in the third paragraph of post #2. It is likely that the prop will ventilate before it trims above the limit Now all you need to do is listen for prop ventilation, which everyone should always do. Alternatively, add a tilt switch to your boat.
  3. C

    120 MerCruiser 74'-77' trim pump wiring questions

    If your trim limit switch still works, and you do set it to that measurement, you will not be able to tilt the OD up when you pull the boat, or to work on it. I.E when your prop hub fails in November, 5 miles from the dock, and you want to change the prop, the OD will be far underwater. The...
  4. C

    Draining gas tank questions -- Is this thing a vent? How does my tank look in general?

    Sure it should keep the contact to a minimum, however, one can see the corrosion. The bolts connect the two metals together, electrically.
  5. C

    New Winch or Winch Strap?

    Sure, my older neighbor has a 27 foot outrage with an electric winch. When I helped him pull that boat, his battery for the winch went bad and he never replaced it. I got to crank the electric winch manually, and I lived. Try that on a 27 footer....
  6. C

    120 MerCruiser 74'-77' trim pump wiring questions

    That PTT system probably can with the original three push button panel. You would push the center button for trim, and when the trim limit switch opened, the trim would stop. Push top and middle buttons together would tilt the OD up. If you have a simple toggle switch to control the PTT, then...
  7. C

    blower motor

    Gee, turn on the blower switch and see with wires ger power. You want a fair amount of current, and I would think a dedicated circuit. Brown/yellow is the standard color for bilge blower power. Obviously the other wire would be black or yellow. Dark blue is nav and interior lights.
  8. C

    Draining gas tank questions -- Is this thing a vent? How does my tank look in general?

    They may make aluminum senders, however, that is not the answer. The answer is to clean the tank and then inspect it. If it is good inside and out, you can reuse it. Most of the time, you should not get corrosion from a SS sender. You need water, and likely salt to get the corrosion you are...
  9. C

    2004 mercury 250sx rigging

    Crowleymarine should have rigging info for that motor. You could get the model numbers for the control and search the web for a good deal. When you say steering assembly, what do you mean? Most steering is pretty universal for OBs since the 80's.
  10. C

    New Controls Swap

    Mercury motors used the same mechanical controls for many years. i.e., I used my '76 MerControl on my '93 Merc V6. I needed to graft the wiring however. So any Mercury-compatible control you find, should work with your motor mechanically. You will obviously want one that works electrically...
  11. C

    Draining gas tank questions -- Is this thing a vent? How does my tank look in general?

    You do not need to check the tank for leaks annually. Whenever you get a chance is good, like now when you want to drain the fuel, and it looks like it is pretty old and corroded. If the tank is starting to get corroded areas on it's bottom and losing the thickness of the orig aluminum. you...
  12. C

    Draining gas tank questions -- Is this thing a vent? How does my tank look in general?

    Jimm, The aluminum tanks will develop pinholes on the bottom of the tank. It is best to drain the tank, pull it out and inspect it for corrosion. Most boat builders stopped using aluminum tanks in the early 90's so your tank is likely pretty old. Another reason to inspect it. If it were me...
  13. C

    New Winch or Winch Strap?

    The sun rots out the winch straps. You can replace them periodically with the same or once with a galv steel cable in freshwater or SS cable in saltwater. Smaller boats can use nylon rope, which lasts quite long. You do have a safety chain from the winch stand to the bow eye, right?
  14. C

    1985 Mercury Black Max oil alarm >3k RPM

    Actually, the early Merc V6 motors had the low amperage stators, usually with unregulated charging systems and full wave rectifiers. Merc then went to a single 40A stator/VR, and finally (by 1993) the V6 Mercs had twin 20A Stator coils and VRs. I do not think the stator is your issue, however...
  15. C

    First Successful Outing On The Lake

    OK, to set the shift cable on that motor: Set the MerControl to neutral. Remove both shift and throttle cables from their clamps. Move the shift slide to about the center of it's travel. It will "click" into neutral. Now adjust barrel nut on shift cable until cable will connect to the...
See more
Top