Recent content by merc16

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    Converted my 1999 2 stroke 9.9 to a 15hp

    Maybe even more tbh the 9.9 reeds are barely open
  2. M

    Converted my 1999 2 stroke 9.9 to a 15hp

    As you can see the reed stops on the 15 are twice as tall as the 9.9, i was sitting around 5200 rpm with the 10 1/2 pitch prop which is perfect
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    Converted my 1999 2 stroke 9.9 to a 15hp

    Hey guys! Just here to share what i did to convert my 9.9 yammy to a 15 hp (the only changes yamaha uses) so first off i got the 63W reeds (15hp reeds, the 9.9 are part numbered starting with 63V) I have a pic below you can see the difference (the 9.9 reeds are on the left) and the second thing...
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    Underpowered Yamaha 9.9

    Idk how heavy is your boat? I was getting 22mph on my 14 foot 150lb princecraft with a 20lb anchor, gas and fishing gear with my 9.9 yammy, until i converted it to a 15hp now im getting 25mph and dont lose a pile of speed with more weight in the boat 😍😍 22mph with me and my buddy, and full...
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    1999 Yamaha 9.9 lighting coil question

    Hey guys, im kinda new to owning a yamaha outboard i see there are 2 unused prongs under the hood id like to wire up a usb charger and my battery for my fish finder, my question is do i need a special regulator that you can get from yamaha or can i wire the coil right to the battery? Thanks in...
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    Yamaha 15 hp 2stroke stock propeller size?

    Anybody know the exact size that comes on the yamaha 15hp outboard 2 strokes? Im pretty sure its a 3x 9 1/4 x 9 3/4 but cant find the info anywhere
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Sorry guys also the stock prop on the 15 i believe is a 91/4 x 9 3/4 whilst the 9.9 is 9 1/4 x 9 i believe thats it, reeds and prop
  8. M

    Underpowered Yamaha 9.9

    The stock prop is 3x 9 1/4 x 9..... check that then check your max timing and throttle that its opening all the way, max throttle is 30 degrees BTDC
  9. M

    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Thank you sir it was specified as to the 63W was for the 15 🙃 i cant find any other differences, timing, fuel ie.
  10. M

    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Thanks for the reply! Its a 1999 9.9MSHX model (2 stroke obviously) lol
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    1999 yamaha 2 stroke 9.9 to 15hp conversion

    Hey guys, i understand the only difference is the reed valve assembly has taller reed stops im just looking everywhere for that part number and cant find a proper answer, on the website theres 2 reed assembly part numbers (63V and 63W) but i dont know which one is for the 9.9 and which one for...
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    1999 Yamaha 9.9hp 2 stroke popping sound at WOT

    Hey guys, i recently picked up a yamaha 9.9 2 stroke, idles perfectly, i changed the spark plugs, water pump, gear oil ETC only thing i didnt take off was the carb cause the previous owner told me a shop just cleaned it.... anyways engine runs perfect but at WOT theres a popping noise randomly...
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    1997 mariner 200hp

    hey guys, does anybody know if this is a good motor, it was well taken care of by the previous owner. anybody with any informatin and quality of this motor, replies would be great.<br />thanks guys
  14. M

    1997 mariner 200hp

    hey guys, does anybody know if this is a good motor, it was well taken care of by the previous owner. anybody with any informatin and quality of this motor, replies would be great.<br />thanks guys
  15. M

    starcraft boat quality

    i have a new boat lined up to buy. its a starcraft 1991 16 foot.does anybody know if im getting myself into good quality, or bad junk. any help will be great!
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