750 with single carb

[Fenix169motox]

As requested photos of my plugs. Mostly wot runs not much idle time.
140 main jet. 135 pilot. (Went with the 140 main so it's similar to my buddy's ski)
Where is the best place to buy jets? I will buy whatever you guys suggest that would help me.

 

[Fenix169motox]

It's running the best I guess it can. One turn out on both screws, good throttle response but it's slow. 45mph. My prop is a skat trac 13/18 swirl. Might be my problem

 

[JetskiMontana]

Don't worry about hijacking the thread. Haha. I just ordered a 2.3 n/s with 115 pilot and 125 main as well as all the different spring weights to try. Hopefully I can find a good combination quickly. I got some info from a guy saying the carb can leak if the motor rumbles really hard which my 750 is pretty rough at idle and smooths out a bit when giving it throttle. Wish I could get email notifications whenever someone posts in this thread like on some other forums. Thanks everyone for the input.

 

[WB1994]

You can get email notifications I think.

If your popoffs too low the ventury will dribble. Yamahas are known for that but your kawi should be fine.

 

[Fenix169motox]

Well I found out why I wasn't reaching my full rpm.

 

[JetskiMontana]

Yeah that's why I bought every spring weight available to get my pop off pressure higher so it doesn't leak. Also, does anyone know what changes I would have to make for being at 4000 feet above sea level?

 

[Fenix169motox]

Yeah that's why I bought every spring weight available to get my pop off pressure higher so it doesn't leak. Also, does anyone know what changes I would have to make for being at 4000 feet above sea level?

A bad needle and seat valve would cause a lot of dribble too.

 

[JetskiMontana]

I bought a 2.3 needle and seat to try as well.