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  1. J

    What year is this engine?

    I am working on a Mercury Tower of Terror, a 90 hp, six-cylinder. The tag on the transom bracket says OB107875. Can anyone tell me what year the engine is? Thanks, J
  2. J

    1996 SeaDoo GSX Running Rough

    1996 GSX runs rough. Don't think it's a misfire as it also falters on starboard turns like the inertia is holding fuel back. Fuel filter is clean. Fuel lines are clear. Any ideas? Thanks. J
  3. J

    '95 Evinrude 9.9, Pin Hole in Copper Water Pipe

    I am repairing a '05 9.9 that overheated. You have seen my recent posts. As I am cleaning and rebuilding I find something I did not expect. In the copper water tube coming from the water pump to the engine, I find a 1 mm hole about 2 inches below the engine end. Is this hole design intent...
  4. J

    1992 Evinrude 8 Overheated

    Working on another overheated Evinrude. Water pump impeller split. Replaced impeller and a couple melted parts; throttle linkage, water outlet, thermostat housing. Thermostat also replaced for fear of heat treat. Compression at 80 psi. Got it back together but it doesn't want to start...
  5. J

    1985 Evinrude 9.9 Overheating

    I am working on an 1985 Evinrude 9.9 that has overheated and started to smoke. It was shut down. Looks like it was hot enough to start paint peeling at the top of the cylinder head. It is pumping water through, although the stream is not as strong as on some I have worked on. I replaced the...
  6. J

    Evinrude 8 Overheated, Can I save it?

    I am in the company of a 1992 Evinrude 8 hp that has over heated. The impeller failed and she cooked. In fact, the throttle linkage arm, the water outlet indicator elbow and the thermostat housing all melted. I have her back together and she will run well but she doesn't want to start. I...
  7. J

    Alpha one Shift Cable Bellows

    I need to replace the shift lever bellows on an Alpha One outdrive. I believe it is a Generation II. Is it possible to replace this without removing the stern drive? Can I get a wrench in to remove the band clamp? If I do have to remove the stern drive, what other maintenance items should be...
  8. J

    1997 or 1998 Mercury Tracker Trim / Lift Slowly Letting Engine Down

    Thank you for taking my question. On a 1997 or 1998, serial number 0G0B4270, Mercury Tracker 4 Cylinder, the trim hydraulics no longer hold the engine up firm. The engine slowly drops with time, about an inch in 15 minutes. Can anyone comment on what the specific problem might be and if a...
  9. J

    15 hp Great at High Speed But Will Not Idle

    I have a '87 Johnson block in a '79 Evinrude chassis. Runs great at high speed but will not idle. Any ideas? Any subtle linkage differences that may be missed? Ignition advance? Thank you!!!
  10. J

    Mercury Tracker 40 hp Tachometer

    I have lost the tachometer function on a Mercury Tracker 40 hp. Any recommendation on how to trouble-shoot? Thank you.
  11. J

    1997 or 1998 Mercury Tracker Trim / Lift Slowly Letting Engine Down

    The trim / lift on my 40 hp Tracker (4 cyl) is not holding the engine up. Any ideas?
  12. J

    Mystery Tubing

    I am looking at a 1997 or 1998 40 hp Mercury Tracker 4-cylinder on a pontoon boat. The speedometer at the helm is dead. Coming out of the top of the propeller drive shaft housing, alongside the gear shift rod, is a rubber tube terminated with a barbed coupling, no mating rubber tube. The end...
  13. J

    1982 Mercury 18 hp Carb Jet Availability

    Can anyone tell me where I can get a new main jet for this engine? I am measuring 0.054" with 0.052" shown as the max. available from Merc. Mine must be plum worn out. I am having trouble leaning this engine out at high speed. I was considering trying a 0.050" jet until I measured mine to be...
  14. J

    1997 or 1998 Mercury Tracker Trim / Lift Slowly Letting Engine Down

    Thank you for taking my question. On a 1997 or 1998, serial number 0G0B4270, Mercury Tracker 4 Cylinder, the trim hydraulics no longer hold the engine up firm. The engine slowly drops with time, about an inch in 15 minutes. Can anyone comment on what the specific problem might be and if a...
  15. J

    1982 Mercury 18 hp Runs Rough

    Thank you for taking my question. I have an 18 that runs excessively rough, only sometimes clearing up at full throttle. When it clears up, of course it runs like a beast! It chokes up at idle and sometimes remains choked at full throttle and sometimes clears up at full throttle. I have been...
  16. J

    1982 Mercury 18 hp Runs Rough

    Thank you for taking my question. I have an 18 that runs excessively rough, only sometimes clearing up at full throttle. When it clears up, of course it runs like a beast! It chokes up at idle and sometimes remains choked at full throttle and sometimes clears up at full throttle. I have been...
  17. J

    Johnson Model Year

    I have a 9.5 Johnson, Model MO11C, serial number J2560655. Can anyone tell me what year it is? Thanks, Jim
  18. J

    1983 8 hp Evinrude Liners and Keepers

    I have an 8 hp that I am putting new rings and bearings in. The story is that it was run without oil and overheated. It came to me like a used Harley, in a box. Inside , the moptor is very clean. Not many hours on it. I am in to the crankshaft and I see what are called liners and needles...
  19. J

    Deep Inside a 1983 Evinrude 8 (7.5)

    Hi. I am inside a 1983 Evinrude 8 hp honing cylinders and replacing rings and bearings. I am replacing what are called keepers and needles at the connecting rod journals of the crankshaft. Can anyone tell me what to expect with keepers and needles? Are these supposed to be an improvement...
  20. J

    '87 Power Head Into '79 Case

    I'm putting a '87 power head into a '79 case; broke the '79 crank. I have found 2 design differences and am wondering if there's more. I found the lower seal and o-ring combo changed to double-seal; must have been changed for service personnel. Also, I have found a different dimension on the...
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