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  1. Texasmark

    Motor Won't Turn Over

    Additionally, the battery needs to spin the crankshaft at about 200 RPM to generate the necessary spark intensity to fire the plugs. So here is another reason why starting with the battery performance is the place to start.
  2. Texasmark

    1981 Mercury 7.5 2 stroke

    Normally you have the water level ABOVE the water pump. I notice that your normal Pee Stream indicating that water is being circled through the powerhead properly is just sputtering.......
  3. Texasmark

    kiekhaefer

    I never thought about the LU gearing but you have a definite point about how to hookup a non 90* interface....I never had a problem with one as I wasn't a Merc. guy at the time. Agree on to each their own with good and bad points.
  4. Texasmark

    kiekhaefer

    A big 10-4 on Mercury's lack of SS in critical areas for a long time. I was an OMC guy at the time but my friend had a 90 HP Merc.....year was 1965 time line. I don't remember if it was his engine or someone elses but we were visiting a Merc. repair shop, and a lower unit sitting in a fixture...
  5. Texasmark

    Motor Won't Turn Over

    I never worked on an injected outboard but sitting for 2 years tells me that you have old fuel remnants in the fuel system and you need to get them out. I recently bought an ATV that sat up for awhile...didn't know how long. PO said he drained the tank but not the carb. Well the carb was...
  6. Texasmark

    2017 115Mercury Ct

    If its the fuel pump, squeezing the bulb when it acts up and it recovering exposes that as the problem. If the fuel tank isn't venting, removing the fill cap will identify that. On spark, coils are usually the culprit when they get hot if they are defective. You can run the engine to get it...
  7. Texasmark

    kiekhaefer

    If you will notice the tilt of the transom bracket and the tilt pin hole being used is 2nd from the bottom. Reading the description you will see that they talk about "Glide Angle" styling for getting over debris where the fish usually are and you want to get in and at them and most importantly...
  8. Texasmark

    Cabin Fever outbreak.

    Take 2 Aspirins and call the doctor in the morning. Happens to me this time of year and I live in N. Tx. We are having a most unusual February here with this warming trend. I really like it as I can get outside and do the kind of things I like to do. Hope it continues. Good luck!
  9. Texasmark

    Looking for a service manual for a 95 Mercury 40hp

    I get most of my manuals for used equipment of various types, including outboards, off ebay....some used, some new reprints.....yes they cost money.
  10. Texasmark

    Prop for Evinrude V4 crossflow

    I see a "reverse chine". Speaks for itself. like tri-hulls of the 70's, the reverse chine captures high intensity spray from the hull below and reverses its direction giving tremendous lift to the boat and I'll bet it's the reason for his numbers. My Crestliner 17.5' Fish hawk with a 115...
  11. Texasmark

    Prop for Evinrude V4 crossflow

    My experience with '70's fiberglass boats on the low tier of cost amounted to a 15' hull with gell coat, one layer of glass mat, sprayed in paint, a wooden deck providing a space for flotation requirements, a fore deck with the same 1 layer of material...a piece of wood attached therein for a...
  12. Texasmark

    83' 115hp Mercury, prop slip

    As a rule of thumb, it seems that for a given size....lets use 13" +/- for small gearcased higher Hp engines, the diameter will drop fractions of an inch as the pitch is increased....part of the design formula for props. Has little to do with performance like pitch changes. First of all the...
  13. Texasmark

    STAINLESS OR NOT

    It all depends on where you fish and I agree SS can tear up a LU/geartrain. I fish clean water and keep track of the depth. When I was having problems in 1972 the lake had just filled about 3/4 of the way and the saplings were still alive and everywhere. A lot of times the engine was near...
  14. Texasmark

    STAINLESS OR NOT

    I remember the $185 easily as that was a lot of money back then for just a prop and wife and I had 4 offspring to raise trying to have some fun with water sports........but it was well worth it. No more prop problems, or lunch breaks across Dallas to a prop shop hoping to make another trip...
  15. Texasmark

    Prop for Evinrude V4 crossflow

    His numbers are good. My avatar is my 90 Merc pushing a 17.5' aluminum bass boat with a stepped hull, not dead rise but 3 distinct steps with the one on which the boat is riding in the picture about 10" wide.....a "pad" of sorts. It had a 24P SS Ballistic running right at 5800 RPM and 50 MPH...
  16. Texasmark

    83' 115hp Mercury, prop slip

    Having diddled with alum and SS, 3 and 4 blade props on 90 and 115 hp 2 stroke later year Mercs, a 4th blade can help you maintain plane just above planing speed but you will suffer otherwise with the extra blade....that's why Karl K. used 2 blade props on his engines until he came out with the...
  17. Texasmark

    Outboard ran without water for about five minutes

    My mercury service manual for 3 and 4 cylinder early 2000 era 2 stroke engines says that 120 is your dividing line....above ok, below expect problems.
  18. Texasmark

    Does winter cause odd purchases ?

    Wow on the front wall removal. on doing the work in the house, I have seen pictures of guys working on engines in the house on the kitchen table. One of them showed the gas hot water heater up against the wall (not in a ventilated closet) not far from the table where the guy was overhauling a...
  19. Texasmark

    Conversion from I/O to outboard on Islander.

    Its a guessing game. You want the correct AV plate height at/near the surface when running but you want all the height you can get otherwise. A 30 may work and if so great but running a straight edge back from the hull bottom, may find the AV plate several inches below the line.....which you...
  20. Texasmark

    Outboard ran without water for about five minutes

    Me too on the impeller. On replacing the impeller, Dad had a 1957 Scott Atwater 10 HP that I played with quite a bit. I had a 55 gallon drum in which I ran it usually. Sometimes I would just have it sitting on its storage rack and fire it up for a bit. I had to have a melted rubber mess for...
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