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  1. M

    2008 F250 Knocking noise

    She usually purrs very quietly but after a tubing run today the knocking noise began. I haven’t done anything yet but the oil, spark plugs, lower unit, water pump, are all new. This sounds valve related. Same noise in neutral or running. I rev the motor up a bit in the video. Any thoughts are...
  2. M

    F250BTUR Bad Rattle

    I've got an 08 Yamaha F250BTUR with new digital controls. Engine purs perfectly in neutral. Right when I kick into forward or backwards only at very low RPM the noise in the video happens. Once I get up on plane It does not make the noise and operates normally. I have serviced the lower unit...
  3. M

    Yamaha L250TXRP Rough Running Video

    The engine just lost power and stalled after a gas fill up and fuel treatment. I thought it was bad gas. Since, I've changed the low pressure fuel pumps, fuel filters, water separator. Changing those items did make it run better for a few hours but now the sound while running has degraded to the...
  4. M

    1991 Yamaha trim dust seal stuck

    I have a 1991 Yamaha 250. I unscrewed the cylinder trim caps expecting to replace the trim dust seals with ease and I cannot get them out. I see there is a ring snap holding the seal in place, but I can't get it out. Any tricks? I was using an ice pick and hammer, pliers, etc. I can't get the...
  5. M

    Yamaha 250 flywheel nut

    I have a 1991 L250TXRP and I am trying to figure out how big the metric flywheel nut is. It is the same nut used on a number of model years for the 250 hp engine. Yamaha themselves doesn't seem to have the answer. Any help would be greatly appreciated!
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