Recent content by jwbergeron

  1. J

    1998 OX66 250 Gear Case Leak

    Had some water in the gear case, I was hoping it was bad gasket at the fill or vent plug. Vacuum and pressure tested it and turned the prop and drive shafts during both. Vacuum tested to 15psi, it dropped to 9 psi almost immediately, and held steady for quite awhile. Pressure test couldn't get...
  2. J

    250 OX66 - Tilt Cylinder Hydraulic Line Fitting Broken

    Looking for some help. The hydraulic line connecting tilt cylinder to the main assembly (at the bottom of the cylinder) was leaking. In the process of replacing the line, the port on the bottom of the main assembly (female threaded into bottom of the frame) got stripped. I was thinking maybe...
  3. J

    1998 Yamaha 250 OX66 Cuts Out

    My starboard motor cuts out intermittently. When the motor runs, it runs fine....but once in a while it will cut out like a key is turned off, eventually it will start again. When it cuts out, the high pressure fuel pump doesn't run at the turn of the key. But if I let it sit, eventually I'll...
  4. J

    Tilt Cylinder Disassembly - 1998 Yamaha 250

    Fellas, I need help with the tilt cylinder assembly. I have all new O-rings & seals to replace, but cannot figure out for the life of me how to get the plunger off the end of the shaft (which would allow me to replace all the seals). I have the subassemby out laying on the bench...that was a...
  5. J

    Yamaha 250 Ox66 Cuts Out

    I've got a pair of 1998 250 OX66's that I've owned for 3 years. I've got to know them pretty well, but this one's got me scratching my head. Over the season, the starboard motor will cut out randomly (completely stall, like the key was switched off). This seems to happen at any RPM...maybe...
  6. J

    250hp 0x66

    I've got twin 1998's. Yesterday coming home in rough seas, starboard motor stalled repeatedly. Once we made it to calm waters it was fine. I've read this problem before in this forum, but have had no luck finding the thread...so I apologize if this is repetitive. Its definitely a fuel...
  7. J

    Motors up or down when not in use at the dock?

    I've got twin yamaha 250's that I keep tilted up at the dock to keep clean. The lower unit remains slightly in the water (saltwater), and the zincs are completely out. An old timer gave me the what-for the other day, saying I was destroying them as they weren't protected by the zincs. If I...
  8. J

    250 OX66 Fuel Problems

    I've got twin 1998 250's and am having fuel problems with one. At cruise, port throttle needs to be advanced beyond starboard to synch the motors. At the same rpm, the port burns about 4gph more than starboard. I've run them up and down and notice at WOT, port gets up to 4500rpms at most (and...
  9. J

    Can't Prime New Fuel Filters on Yamaha OX66...

    This may be really stupid, but I replaced fuel filters on my new (to me) boat w/ 1998 250 OX66's, and can't prime the fuel system, between the priming bulbs and the priming pumps that the boat is equipped with. Spent several hours, before I do something really stupid, anyone know any tricks...
  10. J

    1998 Yamaha 250 OX66

    I'm in the process of buying a boat with twin 250's. Its winterized and still in storage, so haven't got to run under load. I'm looking for some recommendations on what I should be looking out for on these motors, and what maintenance I should plan on doing this season. I'm aware of the havoc...
  11. J

    Convert to Premix?

    I've got a 93 Evinrude 225 and a 92 gallon gas tank. From what I hear, it sounds like the downfall of these motors is inevitably a fried powerhead due to an oil injection problem. I've heard of some guys bypassing the VRO's on brand new motors. I've also been told that the gas/oil mixture in...
  12. J

    '93 Evinrude 225 hp - Warning Horn Sounding

    My warning horn is going off for one short beep on occasion (maybe a half dozen times per hour). The motor runs fine, and the oil injection seems to be working OK. I replaced the horn and the float in the oil tank...still she beeps. Any ideas would be greatly appreciated.
  13. J

    Evinrude 88 SPL Runs Rough Until Warmed Up

    It seems as though this motor runs on three cylinders until its warm...then the fourth kicks in and is fine for the day. I've replaced plugs, wires, and coils. Any suggestions are greatly appreciated!!
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