SU - HIF carb illustrated

SU - HIF

Very popular british carb, later model

Hold the carburettor in an inverted position so that the needle valve is held in the shut position by the weight of the float. Check that the point indicated on the float is 1mm +/-0.5mm below the level of the float chamber face.To adjust the float level bend the brass arm which rest on the needle valve. Recheck level and check for free movement of the float.

Item No.	Description	Item No.	Description	Item No.	Description
1	Jet bearing washer	21	Spring washer	41	Throttle lever
2	Jet bearing	22	Cover screw	42	Throttle adjusting screw & nut
3	Jet bearing nut	23	Piston damper	43	Tab washer
4	Jet assembly	24	Damper washer	44	Retaining nut
5	Lifting pin	25	Suction chamber	45	Throttle spring
6	Lifting pin spring	26	Chamber screw	46	Body
7	Circlip	27	Identity tag	47	Choke assembly gasket
8	Adjusting screw seal	28	Piston	48	Choke spindle
9	Jet adjusting screw	29	Jet needle	49	Choke 'O' seal
10	Bi-metal jet lever	30	Needle guide	50	Choke body
11	Jet spring	31	Piston spring	51	Spindle seal
12	Jet retaining screw	32	Needle retaining screw	52	End cover
13	Needle seat washer (if required)	33	Needle spring	53	Retaining plate
14	Float needle seat	34	Throttle spindle seal	54	Choke return spring
15	Float needle	35	throttle disc screw	55	Retaining screw
16	Float	36	Throttle spindle	56	Fast idle cam
17	Float pivot	37	Throttle disc	57	Tab washer
18	Pivot seal	38	Throttle spindle seal	58	Retaining nut
19	Float chamber cover seal	39	Throttle actuating lever
20	Float chamber cover	40	Fast idle screw & nut