Weber 28/30 DFTH carburetor

Specifications:
In use from 1986
Idle speed - 775 to 825 rpm
Idle mixture (CO content) - 0.75 to 1.25%
Fast idle speed - 1600 to 1800 rpm
Float level (with gasket) - 5.5 to 6.5 mm (0.22 to 0.26 in)
Automatic choke vacuum pull-down - 6.0 to 6.5 mm (0.24 to 0.26 in)

PrimarySecondary
Throttle barrel diameter28.0 mm30.0 mm
Venturi diameter21.0 mm23.0 mm
Idle jet5040 (70*)
Main jet97 (95*)110 (115*)
Air correction jet185 (195*)190 (170*)
Emulsion tubeF59F22
*Re-jetting sizes for improved economy

Weber 28/30 DFTH carburetor A Top cover assembly
B Automatic choke assembly
C Automatic choke bi-metal housing assembly
D Secondary idle jet
E Secondary throttle valve vacuum unit
F Idle speed screw
G Idle mixture screw
H Accelerator pump assembly
J Power valve diaphragm
K Float
L Primary emulsion tube
M Primary idle jet
N Needle valve
P Fuel filter
Q Secondary emulsion tube

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