Mixture Screw Weber DCO DCOE 40–55

Mixture screw for Weber DCO/DCOE 40–55

Replacement idle mixture screw for Weber DCO and DCOE carburettors. Provides precise individual adjustment of the idle and early progression mixture for each carburettor barrel.

• Fits Weber DCO/DCOE 40, 45, 48, 50 and 55
• Controls mixture from idle into light throttle
• Replaces a worn or damaged screw tip
• Allows individual adjustment on independent-runner systems

Technical specifications

• Type: Idle mixture adjustment screw
• Application: Weber DCO/DCOE
• Use with the correct spring and seal arrangement for the carburettor version
• Sold individually

Installation and use

• Inspect the seat in the carburettor body before fitting a new screw.
• Turn the screw in only gently; overtightening can damage the tapered tip and seat.
• Set a common baseline, synchronise the throttles and then balance each barrel.