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  1. jimmbo

    198x SS-150 rebuild

    I have never paid a Penny to register/license a Boat in Canada, new or used
  2. jimmbo

    Rattling sound 1984 Evinrude 50hp

    You claimed to have posted Videos. You can't do that until you have posted/replied a few times
  3. jimmbo

    1976 to 1987 lower unit swap

    You're right, for some reason I got stuck on the V4s
  4. jimmbo

    1976 to 1987 lower unit swap

    5/8" is a lot. I'm surprised that you were able to to bolt it on. Doing so jammed the Crankshaft upwards, and the Driveshaft downwards pushing on the Gears and Propshaft. Likely caused Damage to the Water Pump, and put a hell of a Load on the Crankcase Sealing Rings and their Grooves on the...
  5. jimmbo

    1986 75HP Mercury Outboard LU Metal Shavings

    I would say an inspection of the internals is needed. Likely a bad Bearing
  6. jimmbo

    Rattling sound 1984 Evinrude 50hp

    Welcome to iboats You need to make a few more Posts before you can upload Pics or Videos
  7. jimmbo

    25hp mercury runs high rpm

    You are experiencing a Runaway Engine, Do Not rev it on the Muffs or in Neutral in the Water. I can't see your engine, and if anyone has messed with the Throttle Linkages and/or the sync between the Carbs and Spark Advance. Running rough often occurs when someone has messed with the Carb...
  8. jimmbo

    25hp mercury runs high rpm

    There is no Load on the engine in Neutral in the water, just some Backpressure. On the Muffs, in gear or not, there is not even Backpressure, so it doesn't take much to rev them up. Even with a Dead Clylinder, they can still rev up fast. Revving the Engine with no load, can and has grenaded many...
  9. jimmbo

    1988 Magnum II / XR4 - Looking for factory service manual

    The Primary Timing numbers have nothing to do with Idling, though if the linkage is messed up enough the engine may not idle. That Primary Timing Spec is simply the point where the Carb is just about to start opening, from fully closed. Idle Speed is determined by the timing, but there is no...
  10. jimmbo

    25hp mercury runs high rpm

    Welcome to iboats Does it do this when on the Boat and in the water, or when it running on Muffs, out of the water?
  11. jimmbo

    No power on top end

    You say Good Spark? Good enough to jump a 3/8" gap? I am going to assume this Engine is a Looper, though there is still a chance it is a Crossflow.
  12. jimmbo

    1960 Johnson 75HP Super Sea-Horse

    A 1960 would be, as racer said, Magneto. In 1961, both Magneto and Battery Ignition were offered, depending on the Model
  13. jimmbo

    1960 Johnson 75HP Super Sea-Horse

  14. jimmbo

    1976 to 1987 lower unit swap

    I thought the switch to unassisted shift was around 77 for the 70hp and 79 for the V4s
  15. jimmbo

    1960 Johnson 75HP Super Sea-Horse

    Welcome to iboats Here is a link to a Service Manual. It does have a couple of Typos. 75hp @4500rpm not 4000 http://www.fiberglassics.com/library/images/9/91/Evinrudeservice003.pdf Electrical Manual http://www.fiberglassics.com/library/images/9/98/Evinrudeservice004.pdf There used to be...
  16. jimmbo

    1976 to 1987 lower unit swap

    72 was the last year for Hydro-Electric, replaced by the Hydro-Mechanical in 73
  17. jimmbo

    1976 to 1987 lower unit swap

    The 76 is a Hydro-Mechanical Shift and the 87 would be a straight Mechanical Shift. I don't recall there being a short shaft 70hp in 76. You are saying that apart, the engine rotates, and the Propshaft turns, but together, neither will turn? Can the driveshaft be turned, when the lower unit is...
  18. jimmbo

    '78 Johnson 75HP will not return to idle.

    Deleted
  19. jimmbo

    Boat Disposal

    That 1977 25hp looks really nice
  20. jimmbo

    1984 115 hp mercury inline 6 Trim problems.

    1983 was the last year for the Old Power Trim system on the Inline 6. All 84 Inline 6s had the new External System
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