Carb bowl screw size ?

[mach1charlie]

What is carb bowl screw size ?

Is fuel line ID 1/4 inch ?

will a piolt jet  BS30/96 #37.5 fit my carbs ?

Thanks in advance for your time...

[T Cro ®]

Screws to hold the bowl on: 4 mm x 16 mm long with .70 pitch (pitch I'm going off memory as it is not listed)

Fuel Line is: 8 mm or closest American SAE size 5/16"

[Pro Recreator]

I attempted to give a fellow COG member a replacement carb bowl screw once from the spare set I have.  I had to give him the entire carb bowl and screw because the screws/bowls I had were a different size than the screws/bowls he had.  I don't know how isolated an incidence this was but just be aware that there may be more than one "correct" size.

[WillyP]

Murph only has one kit (Stainless Steel Carburetor Screw Kit for Your Concours) listed so I think they are all the same. Maybe you are referring to the drain?

[Steve in Sunny Fla]

The screws that hold the bowls on are all the same size, the DRAIN screws are different. i've seen 3 different types, one for a slot head screwdriver (very early models) one that uses a larger hex,(early 90's) I'm guessing around 4.5 - 5mm,, and the later ones that use the 3mm hex.

On BIG caution I want to throw out there is DON'T OVERTIGHTEN the drain screws? they're tapered and can literally "drive apart" the bowl and destroy it with a big crack! steve