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  1. jimmbo

    Throttle arm slop

    Keep revving it like that with no Load and you won't have to worry about the Throttle Linkage. The 1972-1978 Control Box doesn't have linear Lever Motion to Throttle Cable Movement. Most of the Action happens after the Lever is Horizontal. That flat spot may very well be intention, to insure...
  2. jimmbo

    1977 Evinrude 85hp - Intermittent power loss

    Misfires on these engines have been known to happen when the a Spark jumps from the Wire/Boot, to the Cowl Latches on the back of the Cowl.
  3. jimmbo

    Prop, or Engine Issue?

    The only OMC Outboards that had a 4 Barrel Carb were the 64-65 90hp and the 66-68 100hp, the other V4s up till 68 had a 2bbl Carb The engines that had the 4bbl were actually easier on gas per HP than the 2bbl Motors
  4. jimmbo

    Clutch dog

    How many Contact Points for the Dog and the Gear...
  5. jimmbo

    Identify Motor

    It is either a 25 or a 20hp. A 35 would be considerably Different below the Cowl Pan. Bracket, Midsection, Lower Unit, and Prop
  6. jimmbo

    High Altitude prop question.

    How much higher in Altitude? What is you WOT Rpm at you usual Location? And what is the WOT Range of the Engine.
  7. jimmbo

    2 HP dt2 v 2.5 fourstroke Suzuki.

    I would stick with the 2 stroke.
  8. jimmbo

    Outboard upgrade.

    Plus the 2 stroke will keep the Skeeters at Bay...
  9. jimmbo

    2 HP v 3 HP.

    One could be under rated, while the other over rated... 70 yrs ago Mercury was Famous for that, their 10hp was blowing OMC 16s out of the Water...
  10. jimmbo

    Is a Mariner 115 any good?

    Keep your Tower of Power.
  11. jimmbo

    1969 85hp starflite, low power and cutting in and out

    Far too many times we hear "I have worked on Auto Engines, or Aviation Engines". That kind of means Nothing when it comes Older Outboard Engines. An frequent Example, is how many "Experienced Mechanics" insist on trying to set Idle Timing... or adjusting Carb Linkages to adjust the Throttle...
  12. jimmbo

    Curious, how are old boats disposed of that marinas refuse to haul out?

    Works for me!
  13. jimmbo

    1969 85hp starflite, low power and cutting in and out

    Maybe, however, as Electronic Parts warm up, and under Cowl Temps go up, those Electronics can go Wonky, resulting in Weak and/or No Spark
  14. jimmbo

    Throttle Linkage? (1966 33hp Johnson Super Sea Horse outboard)

    Here is how it supposed to be installed
  15. jimmbo

    Powerhead removal

    First things first. What Manual are you using? Likely #10 https://www.marineengine.com/parts/mercury_marine_parts/sn/0B240262/1060412BD/336_120
  16. jimmbo

    Throttle Linkage? (1966 33hp Johnson Super Sea Horse outboard)

    https://www.marineengine.com/parts/johnson-evinrude-parts.php?year=1966&hp=40&model=40662B&manufacturer=Evinrude&section=PUSH+BUTTON+REMOTE+CONTROL What you need are Parts 49 thru 53. Don't worry about the diagram being for a different shift system There are 2 Set/Pinch Screws on the Connector...
  17. jimmbo

    Installing power trim

    Two totally different Designs when it comes to the Transom Brackets. the Midsection-Exhaust Housing. As I said, Not Compatible. But it is Your Motor and Your Money, so you can do whatever you want...
  18. jimmbo

    Installing power trim

    Looking at the Part Diagrams, there is NO Compatibility between them
  19. jimmbo

    Barefoot skiers?

    In 1985 I was able to pull a guy Barefoot, without him using any Ski, Knee Board, etc to get going. He just tucked the Rope Between his Legs and laid back in the Water. As the Boat sped up, he raised himself up, Legs still straight out in front of him, and as the speed got between 43 and 45 mph...
  20. jimmbo

    Mercury 850 thunderbolt (cannot determine the year)

    77 was the last Yr for the 66 cu in 4 cyl 850. In 78, it became the 800. So Far this is the Only Copy I found on Flea Bay of the Factory Manual. Cover page is missing, but that Manual would cover your engine...
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