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  1. jimmbo

    89 Mercury Classic 50 won’t open up

    Did it run fine, then suddenly stop running Fine? What "Tinkering" have you done to the Engine? How long have you had this Motor?
  2. jimmbo

    Math problem

    I love Smoky TCW3 Exhaust, smells Sweet, and Keeps the Skeeters away
  3. jimmbo

    Major engine malfunction today and could use advice on next steps

    First I would pull the Raw Water Pump off and Check the Impeller. If any Blades are Damaged, Also Inspect the Pump Housing, the Thermostat and Housing, also the Exhaust Manifolds for any Restriction. I suspect the Impeller is more than 5 yrs old and should be replaced anyway You said there was...
  4. jimmbo

    Wont go into forward

    Welcome to iboats You didn't get the Throttle and Shift Cable mixed up? I won't hold your being an Auto Mechanic against you, but a lot of things you think as Normal, are not the same on 2 stroke Outboards, especially when it comes to Ignition Timing, and setting Idle Speed
  5. jimmbo

    How many of us have a GREEN Seahorse motor ?

    Over the past 55 yrs, I have seen lots of the Green Ones
  6. jimmbo

    1995 Johnson 112 SPL

    Examine all the Wires and Connectors between the Stator, and the Coils
  7. jimmbo

    97 150 Looper Fuel Spit-Back

    Is it Actually Spitting, or just dribbling out the Throat? If you really Want to "Eliminate Possibilities" just replace the Engine with a brand New One
  8. jimmbo

    Tow Smart "Submersible" LED tail lights are junk... better solution?

    Best thing, is always Unplug the Lights from the Tow Vehicle, Regardless of where or not they are supposedly Sealed. A lot of the Wiring between the Lights and the Plug is not Sealed, is not longer Sealed. Water(with the Exception of Distilled) and Electricity are indeed too Friendly and need to...
  9. jimmbo

    Changing props. What one to get?

    "Probably" really is nothing, just an Assumption. Have you ever Weighed it at a Scale? Take it, put it on the Scale, unhooked from tow Vehicle. You will need to subtract the Weight of the Trailer, Manufacturer should be able to provide that info, or when the Boat is in the Water, weigh the Trailer
  10. jimmbo

    Changing props. What one to get?

    What is your Engine's WOT Rpm Range? How Heavy, as in, is it Full of Water? Even Allowing for the Altitude, your speed seems Low
  11. jimmbo

    Prop questions on a 16' 1976 StarCraft Montego (Merc 888)

    I liked that Hull, Starcraft also made a 15ft Outboard Version of the Hull, which was Flipped by a Canadian Boat Maker back in the Late 70s
  12. jimmbo

    Prop questions on a 16' 1976 StarCraft Montego (Merc 888)

    My Comment is basically, why was the Old Carb getting all Dirty, and unless the Reason wasn't corrected, a different Carb would suffer the same Fate. It puts you right in the Middle of the Range, which is fine. I don't know if the Boat was lightly Loaded, Heavily Loaded, or loaded like you...
  13. jimmbo

    Prop questions on a 16' 1976 StarCraft Montego (Merc 888)

    If the Original Carb was getting Gummed Up, and not staying Clean, how is a Different Carb going to be any Different? You choose a Prop by making sure it runs in the WOT Rpm Range stated for the Particular Engine, which in your case is 3800- 4200 rpm. You DO NOT Prop for Targeted Speed at any...
  14. jimmbo

    Tachometer not working right

    That's not what I asked
  15. jimmbo

    Tachometer not working right

    If 2 tachs aren't working, I suspect either both were fried by your Engine, or both weren't getting the correct Signal. You say the Rectifier is Good, then the Stator might be having an Issue Just out of Curiosity... How long have you had this Motor?
  16. jimmbo

    Buy a 5hp Mariner with a blown head gasket?

    A another added Tidbit, that would have been nice to be told about initially A nice New Inlet Seat and Needle can still provide the wrong Fuel Level if not set Correctly, or the Float has absorbed Fuel. What condition is the Float? Is it Cork, hollow Metal, or a Plastic Material? All of the...
  17. jimmbo

    Yamaha 130 v4 idle mix screws

    So Yammie, because they couldn't get a Carb with Air Holes in the Throttle Plate, have created a way of really getting an Engine, especially a Multi Carbed one, difficult to tune. More Proof that the Proper Service Manual is Needed, and NEEDS to be read, as I have never seen a Carb on a 2...
  18. jimmbo

    Cracked intake manifold

    How's the Oil, and its Level? Core Plugs didn't pop on this one either
  19. jimmbo

    Cracked intake manifold

    Which Engine? Where is it Cracked? Why did it Crack?
  20. jimmbo

    Buy a 5hp Mariner with a blown head gasket?

    A good Carb Idle Mix Setting, is one that Idles well and is Rich enough to prevent a Bog/Stumble when Accelerating. There is an Initial Setting, on the Rich Side, but still within a Combustible Range. The Correct Float Setting is Critical, as it sets the Fuel Level, and too low or too high will...
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