Carb cleaning/rebuild question

I got the carb rack out of my bike. I removed the #1 carb bowl and removed the float and float needle valve. The float had material missing from it. See below



Is this float usable or do I need another one? Carb #2 was the same way. #3 and #4 were ok.

The other question was the rubber cone end of the float needle valve has some type of indented ring on it toward the point. See photo below. Is this normal? Could this indentation cause the needle not to seal correctly? I did have gas in some of the rubber hoses from the airbox. I also had fuel in my crankcase.


Last question the diaphrams on two of the carbs were wet with gas. I tried wiping them off the best I could. What can I clean them with and is there any protectant I can put on them. Any help would be appreciated.

 

Float is decintegrating, time to replace it. The indent in the needle is normal wear it also needs to be replaced, new seat also.
I clean my diaphrams with silicone spray and gently wipe off the excess.

 

It looks like those Carbs have been exposed to a strong corrosive.
The corrosive attacked the Float Material.

Do they all look like that?

::: Use Photobucket.com to submit Photos properly sized :::

 

Only carbs #1 and #2 have damage to the floats. #3 and #4 were OK. Two more questions.

1. I forgot to ask was one of the float pins was bent. Can you still get replacements for them, or do I have to go to a McMaster-Carr and purchase a dowel pin with the same diameter?

2. The outside of the carbs is real dirty with oil/gas grime etc. What do you use to initially clean off the outside carb and rack with? I did not think you used carb cleaner because it is so strong.

RickCoMatic I did import these photos over using Photobucket. What size do I need to reset photos to before I post them here? I tried getting a high resolution pic so you could see what I was talking about.

 

You can just purchase a dowel the same diamater. I imagine it would be easier. Although, Chacal may be able to source just the pins.

I used engine degreaser spray. Let is soak, and washed it off. It came pretty clean I ended up paying a shop to ultrasonic clean it. Then it was real clean.

Usually standard 1024x768 size images are allowed on forums. Havent posted here, but that seems to be the norm.


-Kaya

 

There are several Options for Substitute Float Hinge Pins:

a) Pop Rivet Shank (One of the larger sized Rivets fits nice)
b) Finishing Nail of the right O.D.
c) Old Ball-Point Pen Brass Reservoir Tube
d) Model Car/Plane Aluminum Tubing