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  1. Texasmark

    2001 40HP Mercury 2 stroke losing power after a short time

    Where is your tell tale stream in picture #2. I can't tell if the engine is cutting out in the video or your recorder is picking up interference...sounds rough. Picture #1 just looks like normal draining from several points...I assume the engine wasn't running with the LU out of the water. On...
  2. Texasmark

    2001 Mercury 60hp Bigfoot

    It seems that in 2014 and the dawning of the CT engine, they went to a single OHC and long stroke to get the torque up for hole shot and cruising applications along with the 2.33 gearbox and 13+" prop. So in that regard, they are different than the earler model Big Foot engines....so I read.
  3. Texasmark

    2001 Mercury 60hp Bigfoot

    Well It didn't make sense for Merc to design a special LU just for the 40 thru 60 hp Big Foot. So here are a couple of www sites to backup my 2.33 and the Solas Amita 3 blade, aluminum (to pick one to fit my guessing also), 15P 13+ (13 1/2 actually from iboats no less) pitch. So if these two...
  4. Texasmark

    2001 40HP Mercury 2 stroke losing power after a short time

    First thing I would check is the primer bulb on the fuel line. You need to know if the engine is getting fuel when running. Start out like you described in another trip to the water. While the engine is still running properly and at a reasonable speed...faster the better, reach back and...
  5. Texasmark

    2014 90hp 4s EFI need help setting lower unit into neutral

    You are probably right. F is the least tension position on the cam follower spring in the front end of the prop shaft. After you drop the LU again and set it to N, while the LU shifting linkage is still disconnected, roll the shift shaft on over to R and ensure that you are where you think...
  6. Texasmark

    Pressed in hub - remove or find washers?

    If you have a marine dealer handy, you would be surprised at the pile of props and thrust washers they probably have accumulated over the years.
  7. Texasmark

    2001 Mercury 60hp Bigfoot

    Let's start with a gear ratio. If you don't know an example would be 2:1 used on my current engine. The flywheel makes 2 complete revolutiions for one complete revolution of the prop. Mark a reference, starting point on the flywheel (spark plugs out makes it easier) and on the prop. Start...
  8. Texasmark

    Replacing Transom on aluminum boat...

    How about some pictures.
  9. Texasmark

    What’s it worth

    Ran great when last used means nothing. That boat (Lone Star brand) was probably build in the mid 1950's (back when tail fins on cars were the thing) with a late 1970's-1980's engine. Restoration on the boat is usually transom and deck ( floor), neither expensive tasks $250. probably new...
  10. Texasmark

    Replacing Transom on aluminum boat...

    Define rocking motion and what are you doing when it occurs?
  11. Texasmark

    1996 Mercury 25hp shortshaft lower unit replacement

    The problem is in the pinion gear in the LU that drives the rear of F and R gears. That relationship has to be set to a specified gap (shims) and that takes a special tool..per the book. Course you could get a prop shaft and water pump impeller, and new seals for the top of the shaft and prop...
  12. Texasmark

    20hp mariner after service, speek still 13 to 14km/h

    That's not even on plane. What did he do? Explain more about the carb. swapping you mentioned? Did he get it running satisfactorily in the shop? Numerous things could cause your problem and you'd have to supply some spec numbers and some things you checked and answers to aid in helping you.
  13. Texasmark

    2003 Mercury 25 HP won’t crank

    Check your battery terminal voltage when somebody turns the key to START. If less than 10 volts, get a charge on that battery or a new one if it is sulphated up and won't carry the 100 amps required to start your engine with a decent terminal voltage. Wally world had load testers in the...
  14. Texasmark

    1997 trophy 1903 120hp force

    Sounds good to me. You can "diddle" around and spend endless bucks and time playing with combinations, or just be happy with what you have. Looks like it's working for you and let it be.
  15. Texasmark

    Can I use a Yamaha 115 2-stroke prop on a Suzuki DF140?

    You might go to a Yammie dealer and get your answers. Spline count has to be the same. Prop thurst is against a tapered (usually for centering purposes) flat washer fairly thick. Then the prop. Then may be a flat washer or some kind of prop nut retaining mechanism...some engines use a cotter...
  16. Texasmark

    primer bulb

    How old is/where did you get your gas?
  17. Texasmark

    High Idle (2900rpm) - 1988 l6 115hp Mercury

    Get some 50:1 premix in your gas, circulated through your engine prior to doing that.
  18. Texasmark

    2002 Merc 90hp 2 stroke won't idle after winter storage.

    The dose of Sea Foam sounds like a quick and dirty, inexpensive potential solution. Just give it time to soak in before you make any decisions...like do a "decarb" explained here in archives or www it. Do it one day and wait a day or two and run with 2 oz per gallon for a couple of hours at...
  19. Texasmark

    Yamaha VF115 SHO prop quote

    The 4 blade got me off the limiter so the 3 blade must have been right there.
  20. Texasmark

    Prop Blade/Pitch/RPM

    According to go fast prop slip calculator if your 115 is like most witha 2:1 gearbox...prop turns half the speed of the crankshaft, your slip...the difference turning in water vs a screw turning in wood is: 19 = -4; 21 = 0 (the screw "is" turning in wood; 23 = -4 also. Common denominator here is...
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