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  1. 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
  2. 9

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

    no crystal balls here to tell when you would need to repower
  3. 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
  4. 9

    F115 Yamaha no trim

    two in one package
  5. 9

    gas pouring out of top of carburetor

    looks the same to me
  6. 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
  7. 9

    Yamaha 15 hp 2stroke stock propeller size?

    color me wrong on that then, sorry
  8. 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
  9. 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...
  10. 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
  11. 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?
  12. 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
  13. 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
  14. 9

    1999 200HP OX66 surging/cutting out

    rail pressure while problem shows up should tell if that is the problem mechanical pumps tend to go bad quicker than you would think sometimes. I think monitoring pressure into the VST while problem shows up should point to that being a problem if it cannot keep up, but I am not positive on that...
  15. 9

    1994 Yamaha 130hp push to choke ignition won't work...

    just find out where the kill wire is going to ground and fix it
  16. 9

    Underpowered Yamaha 9.9

    Complete Motor model #, prop being used, weight being pushed, along with the WOT RPM is needed
  17. 9

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

    water in the pan means wet wiring, that tends to short out things or lets spark jump where it should not. find where the water is coming from and solve that
  18. 9

    1999 yamaha 2 stroke 9.9 to 15hp conversion

    so if the 9.9 was propped correctly to hit the maximum WOT RPM, then turning it into a 15 would mean a different prop was needed to Keep the RPMs from over revving that same WOT RPM spec
  19. 9

    1999 yamaha 2 stroke 9.9 to 15hp conversion

    so does the service manual for a 15 have spec that it should run at higher RPMs than a 9.9? what about a 25 or 30 HP motor? maybe Boscoe can tell us on the 15 specs
  20. 9

    Yamaha 2.5hp 4-strk , impeller came apart - inside engine now ?

    since the pieces on impeller went into the tube from the pump, I would see if you could flush it out the same way it went in. not sure if you could rig up something to the stat opening to force water with water hose in from there
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