Oh great motorcycle techies.. Help with a 83 CB1000C problem...

[dgc67]

Yes it supposed to slide in and out not sure about what it does need to study on that one.

Here is what I always have thought about the springs in the valve.
The little tit (man I like that word better without "little" in front of it  . ) is spring loaded so that once the float rises enough to close the valve it can still have some "play".  This allows the float itself to sort of "bob" when the bowl are full.  Like if you hit bumps or something similar that caused the gas to slosh around.  I think it also keeps it from "sticking" as easily since it is held very gently closed this way.
I may be wrong, (man I hope my wife never reads this forum. LOL) but I think I am pretty close.

[roboto65]

Found this hunting around on the net!!!

The small torpedo shaped piece of metal hanging from the float is the float valve. Clean it up and check if the nipple-like pin in the top (closest to the float) moves in and out freely. If it doesnt, soak it in carb cleaner until it moves freely. This spring driven nipple serves as a shock absorber to hold the valve in place. Check the beveled end of the valve for any grooves from wear. If you can see one clearly you may want to replace it. Later valves have a rubber beveled end and normally are OK.

[hootmon]

Clean it up and check if the nipple-like pin in the top (closest to the float) moves in and out freely. If it doesnt, soak it in carb cleaner until it moves freely. This spring driven nipple serves as a shock absorber to hold the valve in place.

Thanx guys for the input...  At $18 bucks each, I'll try soaking it, Althought I worry about if it stuck once, it probably will again.
I'll discuss it with my friend and see which way he wants to go..
Thanx again. 

[roboto65]

There ya go a little better than 18 dollars !!!!

https://www.carbkitscapital.com/carb_kit_list_model.php?make=Honda&model=CB1000

[hootmon]

There ya go a little better than 18 dollars !!!!
https://www.carbkitscapital.com/carb_kit_list_model.php?make=Honda&model=CB1000

Allen.. You are the MAN!!!
Great Job.. Maybe my unemployed friend can replace all four at this price since this was the source of his original problem in two other carbs..

[TLRam1]

He may not be able but it is best to replace the valve and needle at the same time.

For my old bikes the needle valve sets are 34.00 each. I buy Keyster kits, throw away all their jets including the needle jet as they are no good and use the needle valve sets & gaskets.

[hootmon]

I buy Keyster kits, throw away all their jets including the needle jet as they are no good and use the needle valve sets & gaskets.

Terry - where do you get the kits from???
I'm not sure the seats come out of these carbs, I did not see them listed as a part number.. The Needles have rubber tips, so the seats may not be replacable.

[TLRam1]

Some valve bodies might be pressed in as some jets are, I don't remember.

These were bought from Rusty Riders. His website is not built yet, I think he has an ebay store, also Sudco has kits. I have another couple of kits coming from a guy in New Zealand, waiting to hear back from him.
 
Look at his ebay store.

http://stores.rustyriders.net/-strse-Carburetor-Parts-cln-Carb-Rebuild-Kits/Categories.bok

Try here.
https://www.partsnmore.com/cat_index.php?model=gs&category=carb

I can't locate a "small engine repair lawnmower" site we would get some from.

See if any of this helps. 

[TLRam1]

This Float Valve as Honda calls it is used in too many to list bikes including from 50 cc to 250's 500's 400's 750's, etc. So a company may not include the CB1000. I have 19 pages of bikes this fits.

If you have a small engine repair shop take it down and see if they can match it for you. Buy one for and complete a bench test to see if it works.

CB750K A (80) MOTORCYCLE, JPN, VIN# RC01-2100005 TO RC01-2116490
Assembly: CARB. COMPONENT PART...   VALVE, FLOAT (Honda Code 0826990) (SKU: 16155-413-751)   4

16155-413-751      CB750K A (81) MOTORCYCLE, JPN, VIN# JH2RC010-BM200001 TO JH2RC010-BM209614
Assembly: CARB. COMPONENT PART...

16155-413-751      CB750K A (82) MOTORCYCLE, JPN, VIN# JH2RC010-CM300003 TO JH2RC010-CM303183
Assembly: CARB. COMPONENT PART...


16155-413-751      CB450SC A (82) MOTORCYCLE, JPN, VIN# JH2PC054-CM000015 TO JH2PC054-CM019266
Assembly: CARBURETOR

16155-413-751      CB450SC A (83) MOTORCYCLE, JPN, VIN# JH2PC054-DM100001 TO JH2PC054-DM102503
Assembly: CARBURETOR

[TLRam1]

http://www.crc2onlinecatalog.com/Index_Main_Frame.htm

[hootmon]

http://www.crc2onlinecatalog.com/Index_Main_Frame.htm

Thanx Terry

[TLRam1]

EDIT - You can also look in here. This guy here is pretty versed in the DOHC carbs, you might give him a call also. 

http://www.randakks.com/Carb%20Parts.htm



Service Manuals here for the 82 900 and 83 1100, make be of some help.

http://thepit.shacknet.nu/honda/

Sudco

http://www.sudco.com/

You can call these guys and they might be able to match it for you.

[hootmon]

Thanx Terry

[MagnaDaddy]

Sorry for the long delay on getting back to you....   Looks like you have got some really good feed back from the guys here.  MOOTsters ROCK.   If you need some info more specific to DOHCs like your CB1000C  try http://www.cb750c.com/  I've found it  invaluable in my efforts to return my CB900C to the road.