o-ring size for carb needles

[jwan]

does anyone know what size the o-rings for the 21BB carb needles are? my HSN keeps vibrating closed.

 

[hb1111]

best bet would be to take it off then go match it at a hardware supply or plumbing supply

 

[Digital Liquid]

You might just want to pick up a new HSN for only $6. You won't have to spend the time trying to shop around & it comes w/ a new ring. Plus you will also know that your threads are good. The HSN is part # 1471.

Here is a link to towerhobbies:
http://www2.towerhobbies.com/cgi-bin/wti0001p?&I=LXDLP6&P=7

Later....