Carburetters - twin hs2 1961-71

Carburetter Assemblies
The twin HS2 (1 1/4" diameter) carburetter installation was fitted to Cooper and Cooper S models between 1961 and 1971. Identification of your HS2 carburetters 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 (followed by 'L' or 'R' for left hand or right hand carburetter) 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. Reconditioned and in some instances new carburetters are available; please contact us for details.

The carburetters listed here are all of the fixed metering needle type; 'swing' or biased needle type carburetters were introduced to other Minis after the end of Cooper and Cooper S production.

A replacement twin HS2 installation is also available, faithfully original in appearance. The installation includes a pair of HS2 carburetters together with interconnecting linkages and fuel lines, manifold and heatshield assembly.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
1	FZX3052	CARBURETTER INSTALLATION, twin HS2	1	Replacement for all original twin HS2 installations.
2	AUD15L	CARBURETTER ASSEMBLY, HS2, left hand	1	1961-63; Cooper 997cc.
	AUD15R	CARBURETTER ASSEMBLY, HS2, right hand	1	1961-63; Cooper 997cc.
	AUD104L	CARBURETTER ASSEMBLY, HS2, left hand	1	1963-69; Cooper 998cc.
	AUD104R	CARBURETTER ASSEMBLY, HS2, right hand	1	1963-69; Cooper 998cc.
	AUD99L	CARBURETTER ASSEMBLY, HS2, left hand	1	1963-64; Cooper S 1071cc.
	AUD99R	CARBURETTER ASSEMBLY, HS2, right hand	1	1963-64; Cooper S 1071cc.
	AUD146L	CARBURETTER ASSEMBLY, HS2, left hand	1	1964-69; Cooper S 1275cc.
	AUD146R	CARBURETTER ASSEMBLY, HS2, right hand	1	1964-69; Cooper S 1275cc.
	AUD151L	CARBURETTER ASSEMBLY, HS2, left hand	1	1964-65; Cooper S 970cc.
	AUD151R	CARBURETTER ASSEMBLY, HS2, right hand	1	1964-65; Cooper S 970cc.
	AUD440L	CARBURETTER ASSEMBLY, HS2, left hand	1	1969-71; Cooper S 1275cc.
	AUD440R	CARBURETTER ASSEMBLY, HS2, right hand	1	1969-71; Cooper S 1275cc.

Linkage
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
3	WZX872	THROTTLE AND CHOKE LINKAGE KIT	1
4	12A310	CONNECTING ROD, throttle	1	Included in throttle and choke linkage kit.
5	AUC1457	CONNECTING ROD, choke	1	Included in throttle and choke linkage kit.
6	AUE586	LEVER ASSEMBLY, pick up, LH	2	Included in throttle and choke linkage kit.
7	AUE587	LEVER ASSEMBLY, pick up, RH	2	Included in throttle and choke linkage kit.
8	AUC5062	TRUNNION KIT, throttle cable	1
9	AUE34	TRUNNION AND SCREW, choke cable	1	Included in throttle and choke linkage kit.

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 for one carburetter.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
10	AUE810	GASKET KIT, HS2 carburetter	2

A service kit includes the gasket kit, plus float chamber needle and seat, jet assembly and clips for the jet pick up link for two carburetters.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
11	CSK59	SERVICE KIT, pair of HS2 carburetters	1

A rebuild kit includes the service kit, plus throttle spindle, throttle spindle bushes, throttle disc and throttle disc screws for two carburetters.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
12	CRK101	REBUILD KIT, pair of HS2 carburetters	1

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 for one carburetter.
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
13	CSK003	SUNDRIES KIT, HS type carburetter	2

Components
Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
14	AUD9181	SUCTION CHAMBER ASSEMBLY	2
15	AUC2057	SCREW, locking needle	2	Included in suction chamber assembly.
16	JZX1394	SCREW, chamber to body	4
17	AUC8103	DAMPER, suction chamber	2
18	AUC4900	WASHER, fibre, damper	2
19	AUC4387	SPRING, piston, red	2	For AUD15, AUD99, AUD146, AUD151 and AUD440 carburetters.
	AUC4587	SPRING, piston, light blue	2	For AUD104 carburetters.
20	WZX1120	PISTON GUIDE KEY KIT	2
21	AUC2054	KEY, piston guide	2	Included in piston guide key kit.
22	AUC2099	SCREW, piston guide key	2	Included in piston guide key kit.
23	AUC8464	PIN, piston lift	2
24	AUC1151	SPRING, piston lift pin	2
25	AUD4150	CIRCLIP, piston lift pin	4
26	AUD1473	NEEDLE, jet, fixed, standard (GZ)	2	For AUD15 carburetters.
	AUD1149	NEEDLE, jet, fixed, weak (EB)	2	For AUD15 carburetters.
	AUD1059	NEEDLE, jet, fixed, rich (AH2)	2	For AUD15 carburetters.
	AUD1468	NEEDLE, jet, fixed, standard (GY)	2	For AUD104 carburetters.
	AUD1211	NEEDLE, jet, fixed, weak (GG)	2	For AUD104 carburetters.
	AUD1261	NEEDLE, jet, fixed, rich (M)	2	For AUD104 carburetters.
	AUD1242	NEEDLE, jet, fixed, standard (H6)	2	For AUD99 carburetters.
	AUD1149	NEEDLE, jet, fixed, weak (EB)	2	For AUD99 carburetters.
	AUD1002	NEEDLE, jet, fixed, rich (No. 3)	2	For AUD99 carburetters.
	AUD1261	NEEDLE, jet, fixed, standard (M)	2	For AUD146 and AUD440 carburetters.
	AUD1149	NEEDLE, jet, fixed, weak (EB)	2	For AUD146 and AUD440 carburetters.
	AUD1059	NEEDLE, jet, fixed, rich (AH2)	2	For AUD146 and AUD440 carburetters.
	AUD1478	NEEDLE, jet, fixed, standard (AN)	2	For AUD151 carburetters.
	AUD1149	NEEDLE, jet, fixed, weak (EB)	2	For AUD151 carburetters.
	AUD1242	NEEDLE, jet, fixed, rich (H6)	2	For AUD151 carburetters.
27	AUD9141	JET ASSEMBLY, LH	1	Black coloured jet body with green identification sleeve.
	AUD9142	JET ASSEMBLY, RH	1	Black coloured jet body with pink identification sleeve.
28	AUD2129	NUT, jet union	2	Included in jet assembly.
29	AUD2193	WASHER, jet union	2	Included in jet assembly.
30	AUD2194	SEAL, jet union	2	Included in jet assembly.
31	WZX1341	JET BEARING KIT	2
32	AUC8460	BEARING, jet	2	Included in jet bearing kit.
33	AUC2002	NUT, jet locking	2	Included in jet bearing kit.
34	AUC2114	SPRING, jet locking	2	Included in jet bearing kit.
35	AUC8461	NUT, jet adjusting	2	Included in jet bearing kit.
36	AUC1310	FLOAT CHAMBER	2
37	AUC1373	BOLT, float chamber attachment	2
38	AUC1317	WASHER, plain	2
39	AUC1318	WASHER, rubber	2
40	AUC1316	ADAPTOR, float chamber mounting, LH	1	Orange rubber.
	AUC1336	ADAPTOR, float chamber mounting, RH	1	Mauve rubber.
41	AUE272	FLOAT CHAMBER LID ASS'Y, LH	1	Includes float, needle and seat and float lid gasket.
	AUE266	FLOAT CHAMBER LID ASS'Y, RH	1	Includes float, needle and seat and float lid gasket.
42	WZX1300	FLOAT KIT	2	Includes float lid gasket.
43	AUC1152	PIN, float hinge	2
44	WZX1100	NEEDLE AND SEAT ASS'Y, float chamber	2	Includes float lid gasket.
45	AUC8459	GASKET, float lid	2
46	AUC1215	PLATE, baffle	2
47	WZX1287	FLOAT LID SCREW KIT	2
48	JZX1394	SCREW, float lid attachment	6	Included in float lid screw kit.
49	AUC2246	WASHER, locking	6	Included in float lid screw kit.
50	AUC1038	TAG, carburetter identification	2
AUC1038 is a blank tag; when ordering, please state the carburetter assembly number you require stamped on the tag.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
51	WZX1310	THROTTLE SPINDLE KIT	2	Includes lock tab, disc screws, manifold and air filter gaskets.
52	AUD3079	BUSH, throttle spindle	4
Note that the throttle spindle bosses on the carburetter body must be reamed to 8.0mm diameter before fitting bushes.

Ill. No.	Part No.	Description	Qty. Rqd.	Remarks
53	WZX1320	THROTTLE DISC KIT	2	Includes disc screws, manifold and air filter gaskets.
54	AUC1358	SCREW, throttle disc to spindle	4
55	AUC1145	LEVER, throttle return, LH	1
	AUD2101	LEVER, throttle return, RH	1
56	WZX981	THROTTLE STOP SCREW KIT	2
57	AUC8483	SCREW, throttle return lever stop	2	Included in throttle stop screw kit.
58	AUC2451	SPRING, stop screw	2	Included in throttle stop screw kit.
59	AUC1400	LEVER, lost motion	2
60	AUC1424	NUT, throttle spindle	2
61	AUC1206	LOCK TAB, throttle spindle	2
62	AUC8456	CHOKE CAM LEVER, LH	1
	AUC1371	CHOKE CAM LEVER, RH	1
63	AUC8463	SPRING, cam lever, LH	1
	AUC1520	SPRING, cam lever, RH	1
64	AUC8462	SPRING, pick up lever, LH	1
	AUC1375	SPRING, pick up lever, RH	1
65	AUC1426	BOLT, pivot	2
66	AUC8473	TUBE, pivot bolt	2
67	AUC8474	WASHER, double coil	2
68	AUC5032	WASHER, cam lever	2
69	AUD9004	LEVER AND LINK, pick up, LH	1
	AUD9005	LEVER AND LINK, pick up, RH	1
70	PJZ604	SCREW, link to jet	2
71	AUC5002	WASHER, starlock, lever to link	2
72	12H862	GASKET, air filter	1
73	1G624	GASKET, manifold and insulator	6
74	FNZ206	NUT, carburetter to manifold	4
75	PWZ106	WASHER, plain	4

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LEVER-THOTTLE RETURN-LH-HS2 CARBURETTERS

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TAG- HS CARBURETTER I.D. BLANK

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GASKET-CARB TO INLET,HS2 AND H4

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GASKET-CARB TO ELBOW-HS2

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CONNECTING ROD-THROTTLE-TWIN HS2 CARBS.

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WASHER- PLAIN 3/8 ID SMALL OD

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NUT-THIN-3/8 UNF, (BONNET PIN/ REAR BRAKE FLEXI HOSE, ETC)

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Carburetters - twin hs2 1961-71

LEVER-THOTTLE RETURN-LH-HS2 CARBURETTERS

TAG- HS CARBURETTER I.D. BLANK

GASKET-CARB TO INLET,HS2 AND H4

GASKET-CARB TO ELBOW-HS2

CONNECTING ROD-THROTTLE-TWIN HS2 CARBS.

WASHER- PLAIN 3/8 ID SMALL OD

USE: NT606041

NUT-THIN-3/8 UNF, (BONNET PIN/ REAR BRAKE FLEXI HOSE, ETC)

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