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  1. jimmbo

    1979 80HP Mercury

    Got the Control Cables swapped
  2. jimmbo

    Mercury outboard wieght chart

    1981 80hp 251 lbs 1975 50hp Electric Start 173 lbs Power Trim components not included in the Values
  3. jimmbo

    Raising outboard higher

    If it is Bolted to the Transom, there is no Need for any spacer. If it is just fastened with the Clamp Screws, you have to be careful as to how high you go. Too high and the Engine will be at increased Risk of coming off the Transom, due to lack of Clamping Area By chance are you trying to...
  4. jimmbo

    1979 80HP Mercury

    No, both the Case and the Linkage above it have to be either in Gear, or Neutral.
  5. jimmbo

    Bought Boat and Steering is locked up

    Huge Quantities of Penetrating Oil, and some Heat may be needed to remove it. A Passage Brush should also be run through the Tilt Tube to clean it out. Sometimes the Tilt Tube will also need to be replaced
  6. jimmbo

    1977 Evinrude 15hp pull start

    The Flywheel and Crankshaft Taper should be Lapped, to insure the Contact Fit between them is 100% Get a new key A Torque Wrench is Critical on Tapered Fittings. Even a few too many Pound Feet of Torque will Ruin the Flywheel
  7. jimmbo

    115 v4 2 stroke runs rough when warmed up

    Those Ignition Systems often acted up when they got Warm, then later when Tested back in the Shop, they would work fine. However intermittent Spark can also be caused by Corrosion anywhere in the Ignition, of internal Breakage of those wire. Out of the Water, these things will appear to run...
  8. jimmbo

    2 Cylinder Johnson 40hp Old Trim/Tilt

    The integrated System that replaced the Rube Goldberg device pictured was introduced on the 1976 V6, and migrated over the V4s and 3 cylinder Loopers by 78. Later 2 cylinder loopers used an entirely different system
  9. jimmbo

    What are these small cracks in hull?

    Gelcoat, cracking usually caused Structural Failure of the Glass underneath... 2002 Glastron, that was the year they introduced the Defective VEC method of Construction. Serious Resin Starved areas in those Hulls. I have one of those POS, and mine had a complete Transom Delamination. Glastron...
  10. jimmbo

    9.9 powerhead on a 7.5 chassis?

    Welcome to iboats I doubt the 7.5 Gearcase is robust enough to handle extra Torque of the 9.9, and Propping could become an issue
  11. jimmbo

    79’ Evinrude 70 Bogging

    Maybe the Floats weren't set correctly.
  12. jimmbo

    2 Cylinder Johnson 40hp Old Trim/Tilt

    This unit was used between 1973 and 1977 on the 50hp and above, except for the 1977 140. I have never seen a Trim or Tilt unit like that on any 40hp
  13. jimmbo

    79’ Evinrude 70 Bogging

    It is easy to see if the Throttle Valves are fully open, by looking down the Carb Throat. A check of the Link and Sync will verify proper Carb Opening, in relation to Spark Advance. That needs to be checked and if needed, adjusted any time a Carb is taken off.
  14. jimmbo

    1987 mercury 75

    The 3 engines share the same Displacement. HP differences are usually more than just a different Carb, Porting and Exhaust Tuning among other things, are almost always Different.
  15. jimmbo

    Black scuff marks on cylinder walls

    I thought it was pretty smooth for a V4, hardly shook at all.
  16. jimmbo

    Black scuff marks on cylinder walls

    No Back Pressure, while on the muffs. Running it in a tall Test Tank, or mounted on a boat in the Water, might be more Revealing...
  17. jimmbo

    Black scuff marks on cylinder walls

    Possibly a lot of Oil is Pooling in the #4 Crankcase, Check the Oil Recircuit Lines
  18. jimmbo

    83' 115hp Mercury, prop slip

    It is the One in the Avatar
  19. jimmbo

    Black scuff marks on cylinder walls

    I asked, simply for insight, if a Factory Manual says to put it on Dry, then it should be put on Dry. 3rd Party Manuals can be all over the map on things like that. As for your Rant...
  20. jimmbo

    Critters in My Boat

    A few bowls of Ethylene Glycol should take care of them. Gonna take care of some Squirrels that chewed the Hood Blanket of my Car
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