Lotus TURBO ESPRIT Service Manual page 342

Page 4 SECTION LA
With
the choke valve (8) partially closed, when a leaner mixture i s required,
mixfure flows into the vafve chamber (9) through one of the two outlet
ports (7),
further mixing with air from the two channels
(5),
which, i n this condition,
are partially closed.
With
the choke valve (8) closed, communication between the main barrels and the
starting circuit is cut off
as i s
also communication between the two barrels
by
meats of the dividing bushing (19).
Idling
Fuel coming from the float chamber, metered
by
the idle jets (21), mixes with the
air from the well
(23)
through channels (22); the mixture thus formed, through
channels
(24)
arrives to the adjustment screw (27) and then, metered, flows into
the main barrels (11) downstream the throttle valve (12).
Replacing the plug (26) with an adaptor connected to a suitable manometer i t
is possible to check, through channel (28) the pressure existing i n the barrels
(11) with the throttle valve (12) i n idling position and equalize the air flow
adjusting the bypass screw (25) which controls the hole
(29).