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  1. 9

    Converted my 1999 2 stroke 9.9 to a 15hp

    some may not know how to compare .7mm to 6.0 mm
  2. 9

    High Altitude Rejetting

    yep less O2 up higher so less fuel needed to burn properly. this also means less HP, so it will not be able to push the prop you had if it was chosen correctly for sea level
  3. 9

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    the only time a 3 cylinder motor will not be sparking on all 3 cylinders at the same rate is if there something is wrong with the ignition system components. spark is driven my the flywheel turning rate and it does not change speed for the different cylinders adjusting the individual carb idle...
  4. 9

    2000 Yamaha F50 high rpm in idle.

    I would think if it has a choke and the linkage hangs up there could be a problem. as I said look to see if something is hanging up keeping everything from going to the idle position.
  5. 9

    2000 Yamaha F50 high rpm in idle.

    you need to inspect the linkages to see if something is sticking and not returning to the idle position. even the linkage to the timing advance
  6. 9

    2005 Yamaha 90 LTR 2 cycle blowing 20 amp motor fuse

    or when you turn the key on?
  7. 9

    2005 Yamaha 90 LTR 2 cycle blowing 20 amp motor fuse

    sounds like it points to the RR
  8. 9

    Wiring diagram

    that would cause someone to really scratch their head if checking the switch if they had no idea what wire colors on Yamaha's were suppose to be
  9. 9

    Buying a boat with 05 F225s - what to look for?

    no crystal balls here to tell when you would need to repower
  10. 9

    Wiring diagram

    OK now I have to ask why that shows W to B connected when in the on position and R to Y in the off position on the start switch
  11. 9

    F115 Yamaha no trim

    two in one package
  12. 9

    gas pouring out of top of carburetor

    looks the same to me
  13. 9

    gas pouring out of top of carburetor

    float is not closing off needle and seat when carb is full of fuel. trash in needle and seat of bad float
  14. 9

    Yamaha 15 hp 2stroke stock propeller size?

    color me wrong on that then, sorry
  15. 9

    Yamaha 15 hp 2stroke stock propeller size?

    there is no stock size, it depends on what it will be used on and for what. motors do not come with a prop from factory. prop is added at the dealer
  16. 9

    Help with a funny engine noise.

    get the manual and follow it this guy is not following it. you should sync the carbs together with all of the butterfly valves completely closed which he never did. setting the linkage and timing should be verified with a timing light . also need to make sure on the roller position (timing...
  17. 9

    Help with a funny engine noise.

    every time the carbs are put back on you need to follow the link and sync procedures in the service manual. it includes carb and timing linkages and the roller. get a manual and follow it
  18. 9

    Carburetor question on restoration I’m working on 1992 40 hp MSHQ Yamaha

    you were suppose to look for a water leak, did you?
  19. 9

    Yamaha 150 hp - 4 stroke - 2009

    how hard would it be to get a welder to get to it to weld it up? welding and electronics do not get along, so make sure to remove what you can before welding if you can find someone to give it a shot
  20. 9

    1999 200HP OX66 surging/cutting out

    just my thoughts, but even if VST is full, the HP pump screen/filter could cause rail pressure to drop at higher speeds, maybe even pressure regulator might also if not working correctly
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