Carburetter Assemblies |
From 1975 up until 1992, with the exceptions of a few models built between 1975 and 1977 and the 1990-91 Cooper, all Minis used the later design of single 1 1/2" HS4 carburetter with a 'Capstat' temperature compensating jet (also known as Waxstat). This carburetter type is detailed in this section; earlier HS4 carburetters with conventional, non-temperature compensating jets, fitted between 1964 and 1977, can be found in the previous section. |
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Identification of your HS4 is absolutely necessary before ordering parts. It should be a simple matter of looking at the aluminium tag attached to one of the float chamber lid screws; the number stamped on the tag should correspond to one of the carburetter part numbers listed here. Failing that, if the tag is missing, a study of the applications below will help. |
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Reconditioned and in some instances new carburetters are available; please contact us for details. |
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848cc Carburetter Assemblies |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
1 |
FZX1043 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1975-76. |
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FZX1142 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1976-84. |
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998cc Carburetter Assemblies |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
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FZX1044 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1975-76. |
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FZX1146 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1976-82. |
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FZX1415 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1982-91; not catalyst models. |
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FZX1416 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1982-91; not catalyst models. Alternative. |
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FZX1535 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1989-92; catalyst models. |
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998cc Carburetter Assemblies, Canada and Sweden |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
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FZX1150 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1977-80; Canada. |
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FZX1152 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1977-80; Sweden. |
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1098cc Carburetter Assemblies |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
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FZX1045 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1975-76; Europe (not UK). |
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FZX1160 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1976-82; Europe (incl. UK). |
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1275cc Carburetter Assemblies |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
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FZX1046 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1975-76. |
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FZX1164 |
CARBURETTER ASSEMBLY, HS4 |
1 |
1976-80. |
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New Replacement Carburetter Assemblies |
For some original carburetter types, two new replacement carburetter assemblies have been made available: |
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Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
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FZX3013 |
CARBURETTER ASS'Y, HS4, replacement type |
1 |
Replaces FZX1150, FZX1152, FZX1415, FZX1416, and FZX1535 carburetters. |
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FZX3014 |
CARBURETTER ASS'Y, HS4, replacement type |
1 |
Replaces FZX1043, FZX1044, FZX1045, FZX1046, FZX1142, FZX1146, FZX1160 and FZX1164 carburetters. |
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Gasket, Service, Rebuild and Sundries Kits |
A gasket kit includes manifold gasket, air filter gasket, suction chamber damper washer, float lid gasket and jet union washer and seal. |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
2 |
AUE811 |
GASKET KIT, HS4 carburetter |
1 |
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A service kit includes the gasket kit, plus float chamber needle and seat, jet assembly and clip for the jet pick up link. |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
3 |
CSK65 |
SERVICE KIT, HS4 carburetter |
1 |
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A rebuild kit includes the service kit, plus throttle spindle, throttle spindle bushes, throttle disc and throttle disc screws. |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
4 |
CRK121 |
REBUILD KIT, HS4 carburetter |
1 |
For FZX1043, FZX1044, FZX1142, FZX1146, FZX1415, FZX1416 and FZX1535 carburetters. |
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CRK123 |
REBUILD KIT, HS4 carburetter |
1 |
For FZX1045, FZX1150, FZX1152 and FZX1160 carburetters. |
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CRK129 |
REBUILD KIT, HS4 carburetter |
1 |
For FZX1046 and FZX1164 carburetters. |
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A sundries kit includes choke cam pivot bolt and tubes, suction chamber screws, float lid screws and washers, stop screws and springs, jet nut, jet spring and washer, spindle lock tab and float pivot pin. |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
5 |
CSK003 |
SUNDRIES KIT, HS type carburetter |
1 |
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Components |
Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
6 |
AUD9988 |
SUCTION CHAMBER ASSEMBLY |
1 |
For all carburetters except FZX1535. |
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LZX1968 |
SUCTION CHAMBER ASSEMBLY |
1 |
For FZX1535 carburetters. |
7 |
AUD4251 |
SCREW, locking needle |
1 |
Included in suction chamber assembly. |
8 |
JZX1394 |
SCREW, chamber to body |
3 |
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9 |
AUC8103 |
DAMPER, suction chamber |
1 |
For all carburetters except FZX1043 and FZX1142. |
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CUD4103 |
DAMPER, suction chamber |
1 |
For FZX1043 and FZX1142 carburetters. |
10 |
AUC4900 |
WASHER, fibre, damper |
1 |
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11 |
AUC4387 |
SPRING, piston, red |
1 |
For all carburetters except FZX1535. |
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AUD4355 |
SPRING, piston, red |
1 |
For FZX1535 carburetters. |
12 |
WZX1120 |
PISTON GUIDE KEY KIT |
1 |
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13 |
AUC2054 |
KEY, piston guide |
1 |
Included in piston guide key kit. |
14 |
AUC2099 |
SCREW, piston guide key |
1 |
Included in piston guide key kit. |
15 |
AUC1249 |
PIN, piston lift |
1 |
If fitted. |
16 |
AUC1151 |
SPRING, piston lift pin |
1 |
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17 |
AUD4150 |
CIRCLIP, piston lift pin |
1 |
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18 |
CUD1002 |
NEEDLE, jet, biased (AAC) |
1 |
For FZX1415, FZX1416 and FZX1535 carburetters. |
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CUD1025 |
NEEDLE, jet, biased (ABB) |
1 |
For FZX1046 and FZX1164 carburetters. |
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CUD1037 |
NEEDLE, jet, biased (ABP) |
1 |
For FZX1045 and FZX1160 carburetters. |
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NZX4004 |
NEEDLE, jet, biased (ADD) |
1 |
For FZX1150 carburetters. |
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NZX4005 |
NEEDLE, jet, biased (ADE) |
1 |
For FZX1044 and FZX1146 carburetters. |
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NZX4006 |
NEEDLE, jet, biased (ADF) |
1 |
For FZX1152 carburetters. |
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NZX4008 |
NEEDLE, jet, biased (ADH) |
1 |
For FZX1043 and FZX1142 carburetters. |
19 |
WZX1276 |
NEEDLE GUIDE KIT |
1 |
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20 |
JZX1039 |
GUIDE, needle |
1 |
Included in needle guide kit. |
21 |
AUD3306 |
SPRING, needle |
1 |
Included in needle guide kit. |
22 |
LZX1111 |
JET ASSEMBLY |
1 |
Capstat jet body with blue identification sleeve. |
23 |
AUE1111 |
JET ASSEMBLY |
1 |
Replacement non-Capstat type jet. |
Note that if converting a Capstat carburetter to non-Capstat, along with the replacement jet listed above the pick up lever and link conversion kit BFS701SUR and cam lever spring AUD2432 will also be required. |
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Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
24 |
AUD2129 |
NUT, jet union |
1 |
Included in jet assembly. |
25 |
AUD2193 |
WASHER, jet union |
1 |
Included in jet assembly. |
26 |
AUD2194 |
SEAL, jet union |
1 |
Included in jet assembly. |
27 |
WZX1442 |
JET BEARING KIT |
1 |
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28 |
JZX1182 |
BEARING, jet |
1 |
Included in jet bearing kit. |
29 |
AUC2002 |
NUT, jet locking |
1 |
Included in jet bearing kit. |
30 |
AUC2114 |
SPRING, jet locking |
1 |
Included in jet bearing kit. |
31 |
JZX1183 |
NUT, jet adjusting |
1 |
Included in jet bearing kit. |
32 |
AUC1310 |
FLOAT CHAMBER, RH mounting |
1 |
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33 |
AUD2071 |
ADAPTOR, float chamber mounting |
1 |
Natural coloured die cast metal. |
34 |
BH504161 |
BOLT, float chamber attachment |
1 |
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35 |
LWZ304 |
WASHER, locking |
1 |
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36 |
PWZ104 |
WASHER, plain |
1 |
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37 |
AUE266 |
FLOAT CHAMBER LID ASS'Y |
1 |
Includes float, needle and seat and float lid gasket. |
38 |
WZX1300 |
FLOAT KIT |
1 |
Includes float lid gasket. |
39 |
AUC1152 |
PIN, float hinge |
1 |
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40 |
WZX1100 |
NEEDLE AND SEAT ASS'Y, float chamber |
1 |
Includes float lid gasket. |
41 |
AUC8459 |
GASKET, float lid |
1 |
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42 |
AUC1215 |
PLATE, baffle |
1 |
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43 |
WZX1287 |
FLOAT LID SCREW KIT |
1 |
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44 |
JZX1394 |
SCREW, float lid attachment |
3 |
Included in float lid screw kit. |
45 |
AUC2246 |
WASHER, locking |
3 |
Included in float lid screw kit. |
46 |
AUC1038 |
TAG, carburetter identification |
1 |
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AUC1038 is a blank tag; when ordering, please state the carburetter assembly number you require stamped on the tag. |
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Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
47 |
WZX1177 |
THROTTLE SPINDLE KIT |
1 |
Includes lock tab, disc screws, manifold and air filter gaskets. |
48 |
AUD3080 |
BUSH, throttle spindle |
2 |
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Note that the throttle spindle bosses on the carburetter body must be reamed to 9.5mm diameter before fitting bushes. |
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Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
49 |
WZX1324 |
THROTTLE DISC KIT |
1 |
For FZX1043, FZX1044, FZX1142, FZX1146, FZX1415 and FZX1416 carburetters. |
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WZX1322 |
THROTTLE DISC KIT |
1 |
For FZX1535 carburetters. |
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WZX1325 |
THROTTLE DISC KIT |
1 |
For FZX1045, FZX1150, FZX1152 and FZX1160 carburetters. |
A throttle disc kit includes throttle disc, throttle disc screws, manifold and air filter gaskets. |
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Ill. No. |
Part No. |
Description |
Qty. Rqd. |
Remarks |
50 |
AUC1358 |
SCREW, throttle disc to spindle |
2 |
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51 |
AUD2787 |
LEVER, throttle return |
1 |
Not sealed adjustment carburetters. |
52 |
WZX981 |
THROTTLE STOP SCREW KIT |
1 |
Not sealed adjustment carburetters. |
53 |
AUC8483 |
SCREW, throttle return lever stop |
1 |
Not sealed adjustment carburetters; included in throttle stop screw kit. |
54 |
AUC2451 |
SPRING, stop screw |
1 |
Not sealed adjustment carburetters; included in throttle stop screw kit. |
55 |
JZX1179 |
LEVER, throttle return |
1 |
Sealed adjustment carburetters. |
56 |
AUC8483 |
SCREW, throttle return lever stop |
1 |
Sealed adjustment carburetters. |
57 |
AUD4771 |
CLIP, stop screw |
1 |
Sealed adjustment carburetters. |
58 |
AJD8104Z |
NUT, throttle spindle |
1 |
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59 |
AUC1206 |
LOCK TAB, throttle spindle |
1 |
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60 |
WZX981 |
IDLE ADJUSTING SCREW KIT |
1 |
Not sealed adjustment carburetters. |
61 |
AUC8483 |
SCREW, idle adjusting |
1 |
Not sealed adjustment carburetters; included in idle screw kit. |
62 |
AUC2451 |
SPRING, idle adjusting screw |
1 |
Not sealed adjustment carburetters; included in idle screw kit. |
63 |
JZX1180 |
SCREW, idle adjusting |
1 |
Sealed adjustment carburetters. |
64 |
AUD3586 |
O RING, idle adjusting screw |
1 |
Sealed adjustment carburetters. |
65 |
AUD2859 |
CHOKE CAM LEVER |
1 |
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66 |
WZX1339 |
CHOKE RETURN SPRING KIT |
1 |
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67 |
AUD4867 |
SPRING, cam lever |
1 |
Included in choke return spring kit. |
68 |
AUD2432 |
SPRING, cam lever |
1 |
Required if converting from Capstat jet to non-Capstat jet. |
69 |
AUC1375 |
SPRING, pick up lever |
1 |
Included in choke return spring kit. |
70 |
AUD2429 |
WASHER, choke cam lever |
1 |
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71 |
AUC8400 |
BOLT, pivot |
1 |
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72 |
AUC8473 |
TUBE, pivot bolt, inner |
1 |
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73 |
AUD2430 |
TUBE, pivot bolt, outer |
1 |
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74 |
AUD2433 |
WASHER, distance |
1 |
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75 |
AUD4870 |
LEVER, pick up |
1 |
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76 |
WZX1354 |
LINK KIT, pick up |
1 |
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77 |
AUD4877 |
LINK, pick up |
1 |
Included in pick up link kit. |
78 |
JZX1259 |
CLIP, link |
1 |
Included in pick up link kit. |
79 |
BFS701SUR |
LEVER AND LINK KIT, pick up |
1 |
Required if converting from Capstat jet to non-Capstat jet. |
80 |
12G2125 |
GASKET, air filter |
1 |
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81 |
AUD2219 |
GASKET, manifold and insulator |
3 |
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82 |
FNZ206 |
NUT, carburetter to manifold |
2 |
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83 |
PWZ106 |
WASHER, plain |
2 |
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