Fuel Float

usma41 · Post by **usma41** » Sat Nov 11, 2006 1:04 pm

What are the settings for the fuel float?

OKCM38CDN · Post by **OKCM38CDN** » Sat Nov 11, 2006 7:07 pm

1/4"...

Best to use a 1/4" drill bit as a guage...

Post by **wesk** » Sat Nov 11, 2006 9:43 pm

Frank,
The complete overhaul and specs data from the Carter Carbs Manual TM 9-1826A are right here on our downloads page:
http://www.willysmjeeps.com/downloads/YScarb.pdf

usma41 · Post by **usma41** » Wed Nov 15, 2006 6:47 pm

O K I recived the new float valve and installed it. The 1/4 inch that your refering to, is that before or after depression of the valve and where do you adjust it , on the stem or on the tab between the pivot yoke. I still belive that it is not set correctly because I can not get it to idle down. By the way the float valve that I replaced was no where idendical to the one I recived. The one I recived is the correct one. The differance is that the one that I replaced has a hex on it to install and the one I recived is for screw driver instalation. Thanks Frank

Post by **wesk** » Wed Nov 15, 2006 7:39 pm

Frank,
Just download the YS carb manual from our download page:

http://willysmjeeps.com/v2/modules.php? ... tit&lid=71

usma41 · Post by **usma41** » Fri Nov 17, 2006 6:33 am

Well I did everything I could with this carb, it's still giving trouble. All the previous problems are gone but now I can't get the RPM's down. It now pulsates up and down. (I wounder if it's a linkage thing) It is most noticeable at a stop and between gear shifting. I put in a new float vale and installed a new gasket. I also set the float 1/4 inch. I adjusted the fuel mixture. Still nothing.

cinnabarsam · Post by **cinnabarsam** » Sat Nov 18, 2006 11:01 am

Hi Wes, a question on float level adjustment. Sometimes I see it listed
as 1/4 inch and sometimes 9/64 inch. That's quite a difference. Do you
know which is correct and why the change? Thanks, Sam

Post by **wesk** » Sat Nov 18, 2006 7:12 pm

the 1/4" setting is for the M38's YS637S and the 9/64" setting is for the M38A1's YS950S.

cinnabarsam · Post by **cinnabarsam** » Sat Nov 18, 2006 10:12 pm

Thanks Wes, I appreciate the information. Sam

Post by **wesk** » Sat Nov 18, 2006 11:27 pm

Sorry I missed your second question.

The F134 gets it extra 12 HP from it's ability to breath better and move more fuel thru the induction system so it's carb the YS950S needs to maintain a higher fuel level in the bowl.

cinnabarsam · Post by **cinnabarsam** » Sun Nov 19, 2006 11:34 am

After you stated the correct measurements the light bulb in my hard
head turned on I realized the reasoning. Of course the MC is adjusted
to 9/64 and the MD is 1/4 so that will give me something to do in the
shop on this windy chilly day.

Sam

OKCM38CDN · Post by **OKCM38CDN** » Sun Nov 19, 2006 6:11 pm

You have it backwards MC is 1/4" and MD is 9/64"...