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  1. V

    ox66 how to remove water pump impeller

    Hi Guys, Have anyone replace an SX150txr ox66 water pump impeller? I've replace many water pump until this one. Looking at it I am guessing there is a ring/collar that compressed onto the drive shaft to hold the water pump down. The question I have is how do you remove this ring/collar? From the...
  2. V

    DF140 milky oil --

    I have a DF140 motor that I bough last year and it ran fine last year. This year when I took it out after the winter I check the oil and it is milky. I've changed the oil and it is still running smooth and strong. I have not done a compression test yet but I think the head gasket is OK. So the...
  3. V

    lower unit noise

    I have noises in the lower unit while the motor is in neutral. In gears it is OK. I am suspecting the clutch dog has some issues. Can someone with experience in this area tell me whether the what could go wrong with the clutch dog that makes noise and can it be fix? thanks in advance Vinh
  4. V

    Lower unit noise

    What could be the problem if my lower unit making noise in neutral? In gears it is not making noise. I am suspecting the clutch dog. If it is the clutch dog is it possible to fix it myself?Thanks in advance for any info. Thanks
  5. V

    swapping drive shafts 115HP

    Hi guys, I just bought a lower unit fo my 115Hp four stroke yamaha. The new unit has 24" shaft and mine is a 20" shaft. I have both lower units in front of me here and am getting ready to swap out the shafts. I would like to know is there any tricky/hidden stuff that I need to watch out for when...
  6. V

    BF 130 head bolt torque Spec

    Does anyone know the head bold torque spec for a BF130? Also anyone know where can I get a head gasket for the same motor? I tried boats.net and they don't have it and they couldn't find it either. Thanks for any info. Vinh
  7. V

    1999 OX66 225HP compression measurement

    Does anyone know what is the stock compression measurement for hte 1999 OX66 225HP motor? I am getting ready to go check out one and want to make sure I know what the expected compression measurements for this motor. Thanks for any info guy.
  8. V

    Listen to your motor

    I have a 16.5' CC with an 86 Yamaha 2 stroke. I cleaned the gas tank, carb, fuel filter 4 months ago. The engine runs good until a few nights ago that it idled very low, even after it warmed up. Sometimes it just shut off by itself even at higher RPM. I knew this is not normal. Today I open the...
  9. V

    Water pump question

    It's time to replace my water pump on my 90HP yamaha. There are places that sell the whole kit and some just the impeller. The question I have is when is it necessary to replace the whole kit? Is it OK to just replace the impeller? This is my first boat but I do know a little bit about motors...
  10. V

    79 140HP Johnson idle adjustment question

    Hi, My friend has a 79 140HP Johnson with a bad joke selenoid (removed). The engine starts up fine but the idle is like 4K RPM. I can't seem to find the idle mixture screw any where on the carbs? Any help would be greatly appreciated. Vinh
  11. V

    2001 90HP 4 stroke Merc compression ?

    Hi, what is the stock compression on the 2001 90HP four stroke Merc? Thanks for the info. Vinh
  12. V

    86 90hp 2 stroke ?

    Hi, I just bought an 86 90HP 2 stroke engine. There is a little rubber hose running from the lower unit to the top but doesn't go any where. What is this hose for and where should it go? Also what is the normal checking procedure for a used engine that been sitting for awhile? The engine starts...
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