Note that this carburetor float needle is tipped with a steel ball and square in shape (cross section).

See GSK-Carb774 for the 32mm Carburetor Diaphragm and GSK-Carb322 for the 40mm Carburetor Diaphragm.

How your carburetor works.(Video Link)

EME Part Number:	CarbNeedle767
BMW Part Number:	13 11 1 254 767
Model	Year
R45 (248)	01/78-07/85 ECE
R45/N (248)	03/78-07/85 ECE
R45T (248)	10/80-06/85 ECE
R45T/N (248)	09/80-07/85 ECE
R50/5 (2476)	08/69-07/73 ECE
R60 TIC (2477)	09/78-11/82 ECE
R60/5 (2476)	08/69-07/73 ECE
R60/6 (2476)	07/73-06/76 ECE
R60/6 (2476)	01/74-05/76 USA
R60/7 (2477)	05/76-04/80 ECE
R60/7 (2477)	07/76-11/77 USA
R65 (2472)	07/85-05/87 USA
R65 (248)	07/78-04/85 USA
R65GS (2471)	11/87-11/92 ECE
R65LS (248)	06/81-02/85 USA
R75/5 (2476)	08/69-07/80 ECE
R75/6 (2476)	09/73-06/76 ECE
R75/6 (2476)	01/74-06/76 USA
R75/7 (2477)	05/76-01/79 ECE
R75/7 (2477)	07/76-06/77 USA
R80 (2477)	04/77-07/80 USA
R80 85-87 (2472)	07/84-07/87 USA
R80G/S (2471)	06/80-03/87 USA
R80GS (2471)	05/80-07/87 ECE
R80RT (2477)	08/82-10/84 USA
R80RT 85-87 (2472)	07/84-04/87 USA
R80ST (2471)	10/82-10/84 USA
R90/6 (2476)	09/73-06/76 ECE
R90/6 (2476)	01/74-06/76 USA
R100/7T (2474)	05/76-07/78 USA
R100/T (2474)	09/78-09/84 USA
R100CS (2474)	09/80-09/84 USA
R100GS (47E1)	01/87-03/90 USA
R100GS 91-95 (47E2)	11/90-09/94 USA
R100GS PD (47E1)	06/89-04/90 USA
R100GS PD 91-95 (47E2)	09/90-12/95 USA
R100R (2473)	09/91-12/95 USA
R100R Mystik (2473)	03/94-09/95 USA
R100RS 77-84 (2474)	05/76-10/84 USA
R100RS 88-93 (2478)	08/87-08/92 USA
R100RT 79-84 (2474)	04/78-09/84 USA
R100RT 88-95 (2478)	08/87-12/95 USA
R100S (2474)	05/76-07/80 USA