Weber DCO DCOE Main Jet

Main jet for Weber DCO/DCOE

Original Weber main fuel jet for DCO and DCOE sidedraught carburettors. Meters fuel through the main circuit from the mid-range towards full load and high engine speed.

• Original Weber machining for repeatable fuel flow
• Fits Weber DCO and DCOE carburettors
• Works with the emulsion tube and air corrector jet
• Available from size 125 to 220 in steps of 5

Technical specifications

• Function: Main-circuit fuel metering
• Larger number: greater fuel flow and generally richer mixture
• Available sizes: 125, 130, 135, 140, 145, 150, 155, 160, 165, 170, 175, 180, 185, 190, 195, 200, 205, 210, 215, 220
• Sold individually

Installation and use

• Establish correct ignition timing, fuel pressure and float level before tuning.
• Tune under load with a wideband lambda sensor or rolling road.
• Change one component at a time and record the main jet, air corrector and emulsion tube combination.