Yamaha 9.9HP 2-stroke outboard (15HP!)

Yamaha 9.9HP 2-stroke converted to 15HP with 15HP reed valve.

[aquanza]

i love small 2 stroke yamaha outboards

[Etrician]

Got the same engine and love it 🥰 upgraded my with the 15hp reeds and 10.5" pitch prop

[shuaybbacchus]

I need my alarm clock to sound like this

[Aleksanderbigby]

It took 15 years before our impeller broke, they are supposed to only last 5 years, r e l i a b l e

[robins]

I also converted my Yamaha from 9.9 hp to 15 hp!
Watch my test run video on the boat :-)

[Stebol]

What year is that engine looks really clean

[Павел-пьэ]

Обкатываю моторы только на воде. В этом тоже есть свой кайф!!!

[Psykologisss]

Did you measure the output somehow. How do you know that it has 15 hp now? Just bought a 9.9 so I am interested - would like to do the same. Perhaps you could make a little video describing the proces somehow. Would be fantastic for us with 9.9

[ThesaltyMP]

Can you post a video on how to do it ?

[OvMarshal]

Indian price how much??? & Speed??? & Used petrol in one hour???

[ballongplast]

Do snu guys know What The 1-2 v outlet is for??

[bastiensaulnier]

hello, did you need to change the carburetor jet?

[krdi]

What parts do you use ? How exactly do you do it?

[silverarcher]

What was required to convert it to a 15HP? Was it only the reed valve or was there more required?

[IjanHaisah]

Hello Sir This engine have long shaft??

[rubenhoekstra]

Why is it popping so much when you let go of the throttle?

[Meiyurmeenavan]

Sir please model engine impuller & carburettor

[jaacksun]

Could I do this on my 1986 9.9 Yamaha 2 stroke?