Fuel system - carburettor engines 4A•15
4A
14.3 Exploded view of the SU HIF carburettor
1 Piston damper
2 Dashpot
3 Piston spring and clip
4 Piston
5 Needle retaining screw
6 Spring
7 Jet needle
8 Guide
9 Lifting pin
10 Lifting pin and circlip
11 Spindle seal
12 Throttle spindle
13 Throttle valve and screw
14 Return springs
15 Throttle lever and progressive
throttle cam
16 Fast idle adjustment screw
17 Idle speed adjustment screw
18 Spindle nuts and tab washers
19 Return spring lever
20 Mixture control lever and fast
idle cam
21 Return spring
22 Dust cap
23 Seal
24 Retaining plate
25 Cold start body
26 O-ring
27 Cold start spindle
28 Cold start seal
29 Main body
30 Jet bearing
31 Jet bearing nut
32 Jet assembly
33 Bi-metallic jet lever
34 Jet (mixture) adjusting screw
and seal
35 Jet retaining screw and spring
36 Float
37 Float pivot and seal
38 Needle valve
39 Needle valve seat
40 Fuel strainer
41 Float chamber cover
42 Cover seal
43 Screw and spring washer
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