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18.11 Bi-metal housing alignment marks -
Weber 2V carburettor
A Rich
C Lean
B Index
8 Remove the drill and the rubber band.
9 Refit the heat shield, making sure it is
properly located.
10 Refit the bi-metal housing, engaging the
end of the spring with the choke valve lever.
Fit the three screws, position the housing in its
original alignment (paragraph 4) and tighten
the screws.
11 If the bi-metal housing alignment has been
lost,
refer
to
the
Specifications
illustration). Small deviations from the
specified setting may be made to correct over
or under-choking.
12 Reconnect the choke feed wire, refit the
air cleaner and reconnect the battery.
13 Check the idle mixture adjustment.
19 Weber 2V TLD carburettor -
idle speed and mixture
adjustments
To adjust idle speed, refer to Chapter 1,
Section 15.
To adjust idle mixture, refer to Chapter 1,
Section 16.
20 Weber 2V TLD carburettor -
removal and refitting
1 Disconnect the battery negative lead.
2 Remove the air cleaner.
3 Disconnect the wiring from the anti-
dieselling (anti-run-on) valve.
4 Disconnect the wiring from the automatic
choke heater.
5 Disconnect the fuel supply and return hoses,
noting their locations to aid refitting. Plug the
ends of the hoses to minimise petrol spillage and
prevent the ingress of dirt into the fuel system.
6 Disconnect the link arm from the throttle
linkage.
7 Disconnect the vacuum pipe.
8 Release the coolant hose from the bracket
under the automatic choke housing.
9 Unscrew the four Torx screws, and lift the
carburettor from the inlet manifold. Recover
the gasket.
21.4 Float and needle valve locations in
carburettor top cover - Weber 2V TLD
carburettor
A Fuel hose
connections
10 Refitting is a reversal of removal, bearing
in mind the following points.
a) Ensure that the mating faces of the inlet
manifold and the carburettor are clean,
and use a new gasket.
b) Ensure that all hoses, pipes and wiring are
correctly routed, and free from
restrictions. If any of the hoses were
originally secured with crimped-type clips,
(see
discard these and replace them with
standard worm drive hose clips.
c) On completion check and if necessary,
adjust the idle speed and mixture settings.
21 Weber 2V TLD carburettor -
needle valve and float removal,
refitting and adjustment
1 Disconnect the battery negative lead.
2 Remove the air cleaner.
3 Thoroughly clean all external dirt from the
carburettor.
4 Disconnect the fuel supply and return hoses
from the carburettor, noting their locations to
aid refitting, and plug their ends to minimise
petrol spillage (see illustration).
5 Disconnect the wiring from the automatic
choke.
6 Disconnect the wiring from the anti-
dieselling (anti-run-on) valve.
7 Remove the four Torx screws securing the
carburettor to the inlet manifold.
8 Remove the two securing screws, and lift off
the carburettor top cover, leaving the
carburettor main body in place on the inlet
manifold.
9 Slide the float retaining pin from the carburettor
top cover, tapping it gently if necessary, then lift
out the float and needle valve.
10 If desired, the needle valve housing can be
unscrewed from the top cover. Recover the
washer and discard it; a new one must be
fitted on reassembly.
11 Inspect the components for damage, and
renew as necessary. Check the needle valve
for wear, and check the float assembly for
leaks by shaking it to see if it contains petrol.
Fuel and exhaust systems 4•11
21.15 Float level adjustment - Weber 2V
B Float
A Check dimension
C Needle valve
12 Refitting is a reversal of removal, bearing
in mind the following points.
a) Use a new washer when refitting the
needle valve housing.
b) When refitting the float and needle valve,
ensure that the tag on the float locates
under the spring clip on the needle valve.
Check that the float and needle valve
operate smoothly.
c) Check and, if necessary, adjust the float
level as described below.
d) Ensure that the carburettor mating
surfaces are clean then fit a new gasket
onto the main body and refit the
carburettor top cover.
e) If the fuel hoses were originally secured
with crimped clips, discard these and
secure the hoses in position with new
worm drive hose clips.
f)
On completion, check and if necessary
adjust the idle speed and mixture.
13 With the carburettor top cover removed as
described above, proceed as follows.
14 Fit a new gasket to the top cover, then hold
the carburettor top cover in a vertical position,
with the needle valve uppermost and shut.
15 Measure the distance between the top
cover gasket and the bottom of the float (see
illustration).
16 If the distance is not as specified, adjust
by bending the tag on the float assembly.
17 Refit the carburettor top cover by
reversing the removal operations.
22 Weber 2V TLD carburettor -
secondary throttle valve
vacuum diaphragm renewal
1 Disconnect the battery negative terminal.
2 Remove the air cleaner assembly.
3 Disconnect the diaphragm operating rod
from the throttle linkage by pulling the lower
section of the rod downwards and twist the
end of the rod from the socket.
4 Remove the four cover retaining screws
then remove the cover and withdraw the
spring (see illustration).
TLD carburettor
B Adjustment tag
4
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