Yamaha 9.9 conversion to 15

[petren]

Hi all, I have a 2005 Yamaha 9.9 that has been modified or so I'm told to 15HP(2 stroke). How can I tell without taking it apart if that is the case. I have it on a Zodiac FR340 and it moves quite nice with 3 adults and two kids at about 30km/h and about 3/4 throttle. Would a 9.9 alone be able to do that or that's the 15 horses that push along?

Thank you,

Nick

[Hugh Jardon]

check on this thread as i did this to mine a couple of years ago and posted all the pics that show what to look for


converting a 9.9 yam to a 15

throttle stop is one item and you could undo the carb from the reed block and post a pic and i can tell you if it is a 15hp reed block