[Tinsnips]

I had a quick look here and couldn't find it in print. I do know that 14mm is a common height and I would beleive that to be right if no other confirmation is found.

Carlsalter.com had this supplimentary service manual. It doesn't list the float height but does have the correct OEM jet sizes. Being a 20 year old bike you may want to confirm the jet sizes for piece of mind.

There was a 1998 service manual but I don't know if the 2002 ran the same carbs. If you know other bikes that ran that carb and had the same cylinder angle you can use the same float height.

Free Yamaha Fazer FZS600(P) 2002 Supplementary Service Manual workshop service manual!

Workshop Service Manual for a Yamaha Fazer FZS600(P) 2002 Supplementary Service Manual, free download from carlsalter.com

www.carlsalter.com

 

[Tinsnips]

I have never done it as the manual shows. Like you, I typically like to set my height from the mating suface to the top of the float. I have seen people use clear tubing to check float heights visually and diagnose problems but it is a very awkward way to make precise measurements. In this case I would do 14mm and then check the height with tubing as the manual says.

I would be inclined to use some clear aquarium air line tubing and I would make two lines on it 4.5mm apart about8 inches from the end. Once you open the fuel screw, line the bottom mark up with the mating surface and the fuel should fill to the upper line. That will be way easier than trying to get calipers or a ruler in there.

 

[Tinsnips]

I would adjust the floats. The carb is actually upside down when you are measuring so the floats being higher than spec means your fuel level is lower than spec.

Fuel level higher than spec can cause fuel to come out over flows. A low fuel level can cause bogging due to starvation when accelerating or under heavy load.

I am not sure about the gunk. I would clean it up and reassemble. It doesn’t appear the gaskets leaked. Likely fuel residue from the chamber below.