Bing 40mm CV Carburetor Maintenance Kit - BMW Airhead; 13 11 1 336 902

Bing 40mm CV Carburetor Maintenance Kit - BMW Airhead; 13 11 1 336 902

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CarbKit902 Complete Gasket Set and Diaphragms for Both 40mm Bing CV (Constant Velocity) Carburetors. All O-Rings, gaskets and diaphragms should be replaced when maintaining your carburetor. Vehicle Manufacturer: BMW Make/Model: BMW Airhead Models Application: BMW R80 and R100 Model Years: 1976 - 1996 Manufacturer Part #: 13 11 1 336 902 (Kit), 13 11 1 254 735 (Oring x 4), 13 11 1 254 739 ( Oring x 2), 13 11 1 254 764 (Gasket x 2), 13 11 1 256 353 (Gasket x 2), 13 11 1 257 812 (Oring x 2), 13 11 1 257 819 (Oring x 2), 13 11 1 335 322 (Diaphram x 2) (See APPLICATION TABLE tab BELOW to verify vehicle fitment)


The gasket set includes the following:

  • 2 x 40mm Diaphragm
  • 2 x Float chamber gasket
  • 2 x Choke gasket
  • 2 x O-Ring for idle jet
  • 2 x O-Ring for idle mixture screw
  • 2 x O-Ring for throttle axle
  • 2 x O-Ring for jet needle seat
  • 2 x O-Ring for choke unit

See CarbKit051 for the 32mm carburetor maintenance kit.

How your carburetor works.

How the main and needle jet circuit works
How The Constant Velocity Circuit Works
How The Idle Circuit Works
How The Enriching Circuit, aka Choke, Works
EME Part Number: CarbKit902
BMW Part Number: 13 11 1 336 902
Model Year
R80 (2472) 03/84-01/95 ECE
R100/7T (2474) 04/77-10/84 ECE
R100/T (2474) 09/78-09/84 USA
R100CS (2474) 06/80-10/84 ECE
R100CS (2474) 09/80-09/84 USA
R100GS PD (47E1) 02/89-07/90 ECE
R100GS PD (47E2) 08/90-02/96 ECE
R100GS (47E1) 12/86-07/90 ECE
R100GS (47E2) 04/90-07/94 ECE
R100R Mystik (2473) 12/93-01/96 ECE
R100R (2473) 03/91-12/95 ECE
R100RS 77-84 (2474) 05/76-10/84 USA
R100RS (2474) 03/76-11/84 ECE
R100RT 79-84 (2474) 04/78-09/84 USA
R100RT (2474) 06/78-10/84 ECE
R100S (2474) 05/76-07/80 ECE
R100S (2474) 05/76-07/80 USA
R100TIC (2474) 11/80-09/84 ECE

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