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  1. jimmbo

    Intro and question

    What kind of Fuel does the Lower Unit use?
  2. jimmbo

    1985 Black Max 150 Hp Leaks oil out of reservoir cap. I replaced the cap and still leaking.

    1976? Merc didn't put the Premixing System on until the Mid 80s...
  3. jimmbo

    Barefoot skiers?

    I too learned behind a 14 ft with a 40. I remember cracking the whip behind our 90, boat was going 33-35, with 75 ft of rope, I was probably going over 50, and wiped out. I skipped on the Water, like a Stone, several times before the water was soft enough to yield
  4. jimmbo

    Barefoot skiers?

    The Boom will make it easier, as it offers Solid Water for the Feet, unlike the Frothy Water behind the Boat. As for your Anticipated Joy, at Barefoot Speeds, the Water doesn't feel much softer than Concrete upon a Wipeout. Any bit of Floating Debris, such as a Branch, can really mess up the...
  5. jimmbo

    Sharrow propellers

    That Infomercial? I saw that Promotion a couple of Years ago. It reminded me of "Amazing Discoveries" and had me ROTFLMAO!!!
  6. jimmbo

    Water intake location? MC 185 w/AlphaOne

    On the Lower Unit of the Outdrive, between the Propshaft Line and the Anti-Ventilation Plate
  7. jimmbo

    Sharrow propellers

    That Imaginary Prop, with Imaginary Performance, from Imaginary Tests, from Questionable Sources, has been appearing off and on for the past couple of Yrs.
  8. jimmbo

    1986 merc 40hp 4cyl

    That Motor has been around since the late 50s. For many Years it was known as the 50hp. In the mid 80s, Mercury Prop Rated the Engine, as a 45hp, then a 40hp. Get a Factory Service Manual for that Engine as it will have the Info you will need to rebuild and readjust the Linkages after...
  9. jimmbo

    1993 Evinrude 70hp Missing Prop, Seeking Recommendations

    There is an Easy way to get the Weight. Weigh the Boat and Trailer, unhooked from the Tow Vehicle(get it off the Scale), then go launch the Boat, return with the Empty Trailer and do the Solo Weight thing again for the Trailer. Even 1200lbs for an 15-16 ft Hull seems a bit high BTW, water is...
  10. jimmbo

    Choke stays closed

    Maybe because the Chart shows it is supposed to be on #7. However, Now you say the Choke works on #7, earlier you said it is always on when on #7. Maybe Power is being applied to the Circuit other than by the Choke Switch. Since you say it happens with 2 different Control Boxes, start looking...
  11. jimmbo

    1986 merc 40hp 4cyl

    You are aware that, your Engine does not have a removable Cylinder Head? Pop the Transfer Port Cover off and check to see if the Rings have tension, and to see if the Piston Skirt is scored. If you have a Fiber Optic Camera, stick it in the Spark Plug Hole and take a Look at the Cylinder Walls...
  12. jimmbo

    Choke stays closed

    So when you got it, the Purple and White was on the Wrong Terminal(#6), and the Solenoid was super Hot? Yet when you moved the Purple/White down One Screw(#7), the Choke was always on? So was it Super Hot then?
  13. jimmbo

    Choke stays closed

    If you have a 78 motor, why are you Googling info about a 74? There are Many Differences between the Engines of those 2 Model years
  14. jimmbo

    Propeller recommendation: 14.5' Alumacraft w/Mercury 50HP 2stroke

    I think the Tach is reading a bit High. In 50 yrs I have Never seen a 14" prop on the 44. inch 50hp, on a 14-15 boat, turning 5700 rpm. I have seen them turn around 4700-4800rpm
  15. jimmbo

    1993 Evinrude 70hp Missing Prop, Seeking Recommendations

    I agree with Racer, a 17" would be a pretty much what would be on a 70hp on a boat in the 16' range. I also think 1900lbs is a bit Heavy for that Hull.
  16. jimmbo

    Throttle cable adjustment 72 Merc 500

    How long have you owned this Motor and Controls?
  17. jimmbo

    Throttle cable adjustment 72 Merc 500

    If you have the Linkages all adjusted correctly(known as a Link and Sync). you should have enough adjustment space on the Cable to set the Length.
  18. jimmbo

    Prop size for a 1970 evinrude 40hp electric shift

    We used to use a 12" on our 14ft Skagit(glass), an 11" or 12" would be in the Ballpark What Oil are you using in the Gear Case?
  19. jimmbo

    Fuel and or oil or mix leaking

    When do you see the collection at the Base of the Powerhead? When it is tilted up, or when the motor fully down?
  20. jimmbo

    Waterski prop advice

    Welcome to iboats What is the WOT Rpm Range for your engine, and what are you attaining with the current Prop? I actually prefer the merc Black Max Aluminum Props over the High Five. A 4 Blade with a lot of Blade Area, should be able to provide more than enough 'Yank' to pull the Tow Handle from...
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