Topic: O ring on push-in jets

[oldbiker]

I seem to remember that some one recently posted the correct size for the o rings used on the push-in jets but I can't find the post. Does anyone know this size please?

[Flood]

Haven't seen this recently, but I copied a post from the old Greenspun boards, years ago. No credits given.
Here you go:

Carb main jet, float valve seat and bowl drain screw O-ring Sizes for CB350F, CB400F and CB550.
"Carb O-rings"

When rebuilding carbs on the old Honda fours with press-in main jets,
 you will often find that all the metal parts are fine after a good cleaning,
 and all that you really need to buy are new O-rings. Honda doesn't sell the individual O-rings separately....
instead you have to buy a complete carb kit at $10 to $15 per carb. I found an industrial O-ring supplier
 who was willing to do small-volume counter sales, and was able to get new O-rings at about 50 cents per carb. Sizes are:

Main Jet: 1.2mm cross-section x 3.5 mm ID

Float Seat: 1.5 mm cross-section x 5 mm ID

Float Bowl Drain Screw: AS568-009 (7/32" ID x 11/32" OD)

------------------------------------------------------------
CB550:

Shifter lever seal = inside diameter - 14mm, outside diameter - 24mm, depth - 5mm

And the one behind the sprocket = I.D - 33mm, O.D. - 57mm, depth - 7mm

Hope that helps

Cheers, Remi

[oldbiker]

Thanks Remi, your'e a star. I am going to try making some jets in my workshop ( I am a model engineer) if I can get a supply of the 'O' rings.