Lotus Esprit Series - Air Valve Rod and Guide; Float Chamber Removal; Dellorto Carburetters; Description

FUEL SYSTEM
Page ~23
by a ring and screws with lockwoshers ond it is necessory to ensure the bead is
correctly located and the screws fully tightened.
Location for the bead and tab on the outer
radii of the diaphragm is provided by a
location channel at the top of the main body. It
is importont that location beods and
tab ore accurately positioned.
When refitting the suction chamber cover, place it occurotely so that the screw holes
line up with those in the main body, as this will prevent any disturbance
of the located
diaphragm.
Air Valve Rod and Guide
The air valve rod and
gvide must be kept clean and should not be handled unduly if
corrosion is to be avoided. A few drops of oil (see Section '0') should be applied to
the rod before fitting.
Flwt Chamber Removal
To prevent the leakage of
firel from the float chamber, a rubber '0' ring is situated
between the jet cover
and the float chamber spigot boss. Care should be taken when
removing the float chamber to avoid
domage to the faces and flats.
4 DELLORTO CARBURETTERS
DESCRIPTION
These
carburetters are of the dual barrel side - drought type, each consisting of two
single barrel carburetters with two venturis in each barrel. A small avxiliary venturi
is located in each barrel and they dischar
g
e fi~el, except under certoin conditions,
into the narrowest sections of the large venturis. By using two ventirris in
each barrel
a greater depression
is created than when a single ventirri is employed. Also, the
velocity of on airstream is higher ot the centre, and the velocity of this central core
is irsed by the auxiliary Sentwis, which dischar
g
e into the centre of the main venturis
at the narrowest
rection.
ESPRIT