Lotus TURBO ESPRIT Service Manual page 364

Page 6 S E C ~ / O N LC
With the choke valve (8) partially closed, when a leaner mixture
i s
required,
mixture flows into the valve chamber (9) through one o f the two outlets poris
(7);
further mixing with air from the two channels
(5),
which, i n
this
condition,
are p r t i a l l y 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
meam of the dividing bushing
(1
9).
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 adiustment screw
(27)
and then, metred, 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
(1 1) with throttle valve
(12)
i n idling position and equalize the air flow adjust-
ing the bypass screw
(25)
which controls the hole (29).
The vacuum advance
i s
connected through the calibmted hole (31) by the union
(30).
Screw (20) adjusts opening of the throttle valves at idle.