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Weber DCOE

This carb is synonymous with performance and almost as good as fuel injection in its time. The carburettor is fully customisable with all the jets and venturi's able to be changed to suit whatever application you have in mind.

I found a DCOE Weber Instruction manual that goes in deep. Deeper than I have ever gone as I did not have the special tools.

Setting float level is easily achieved. The the carb top over and lay as shown the the diagram, allowing the float to rest on the spring loaded needle and seat without compressing the ball bearing on the needle. If the ball compresses, tilt the top clockwise until the ball is not compressed. Now set the float level to 5mm as per dimensions. This is with the gasket Gz in place.

Tang Lc is bent to achieve the float height. Ensure you don't accidentally twist the tang.

Tang A is bent to achieve the float drop.

These dimensions are for the round float only, not for the new plastic one (item 9) as in the schematic below.

Item No.

Description

Item No.

Description

Item No.

Description

1

 Filter Cover

28

 Locking Screw ( x 2 )

60

 Pump Rod Spring

2

 Filter Cover

31

 Lock Washer ( x 2 )

61

 Pump Rod

3

 Filter Element

32

 Throttle Shaft Nut ( x 2 )

62

 Starter Jet ( x 2 )

4

 Jet Inspection Cover

33

 Throttle Plate ( x 2 )

63

 Pump Valve Ball ( x 2 )

5

 Screw (x 9)

35

 Throttle Plate Screw ( x 4 )

64

 Stuffing Ball ( x 2 )

6

 Jet Inspection Cover Gasket

36

 Cover Gasket

65

 Retaining Screw ( x 2 )

7

 Top Cover Gasket

39

 Screw ( x 2 )

66

 Needle Valve Gasket

8

 Needle Valve

40

 Screw ( x 2 )

67

 Fuel Union Gasket

9

 Float (plastic)

41

 Pump Cover Gasket

68

 Fuel Union

10

 Emulsion Tube Holder ( x 2 )

42

 Cold Start Unit

69

 Fuel Union Gasket

11

 Air Corrector Jet ( x 2 )

43

 Pump Exhaust Valve

70

 Fuel Union Bolt

12

 Idle Jet Holder ( x 2 )

44

 Idle Mixture Screw "O" ring ( x 2 )

71

 Inspection Cover ( x 2 )

13

 Emuslion Tube ( x 2 )

45

 Throttle Lever

72

 Float Pin

14

 Stud

46

 Cup Washer ( x 2 )

73

 Cable Clamp

15

 Main Jet ( x 2 )

47

 Spring ( x 3 )

74

 Starter Air Jet ( x 2 )

16

 Idle Jet ( x 2 )

48

 Vacuum Screw (x 2 )

75

 Top Cover

17

 Auxillary Venturi ( x 2 )

49

 Pump Jet Gasket ( x 2 )

76

 Plate

18

 Air Horn (x 2 )

50

 Spring

77

 Washer ( x 2 )

19

 Air Horn nut ( x 4 )

51

 Spring Plate

78

 Bearing ( x 2 )

20

 Washer ( x 4 )

52

 Throttle Stop Screw

79

 "O" ring ( x 2 )

21

 Air Horn Tab ( x 4 )

53

 Pump Plunger

80

 Inspection Cover

22

 Main Venturi ( x 2 )

54

 Starter Valve ( x 2 )

81

 Gasket

23

 Stud ( x 4 )

55

 Starter Valve Spring ( x 2 )

82

 Pin

24

 Lock Washer ( x 2 )

56

 Idle Mixture Screw ( x 2 )

83

 Cover

25

 Cap ( x 2 )

57

 Pump Jet ( x 2 )

84

 Pump Cam

26

 Air Bypass Screw ( x 2 )

58

 Pump Jet Oring ( x 2 )

85

 Throttle Shaft

27

 Lock Nut ( x 2 )

59

 Pump Jet Cover ( x 2 )

86

 Washer