CLOSE  WINDOW

This Chart Covers Lambretta Jetting Details As Per Home Workshop MANUAL.

Model

125 Li I

150 Li I

125 Li II

150 Li II

125 Li II Late

Type of carb

MA 18 BS5

MA 19 BS5

MA 18 BS5

MA 19 BS5

MA 18 BS7

Choke

18mm

19mm

18mm

19mm

18mm

Slide

50

65

50

50

50

Needle

D16

D18

D20

D21

D20

Atomizer

260 B

260 B

260 oB

260 B

260 B

Main Jet

92

95

93 or 73

102 or 78

73

Pilot Jet

35

40

35

40

35

Starter Jet

55

55

55

55

55

Float

6.5gms

6.5gms

6.5gms

6.5gms

5gms

Air Screw adjustment

1/2-2 turns

1/2-2 turns

1/2-2 turns

1/2-2 turns

1/2-2 turns

 

Model

150 Li II Late

175 TV II Early

175 TV II 

175 TV II Later Type

Type of carb

MA 19 BS7

MB 23 BS5

MB 21 BS5

MB 21 BS7

Choke

19mm

23mm

21mm

21mm

Slide

50

70

70

70

Needle

D21

E15

E15

E15

Atomizer

260 B

260 B

260 B

260 B

Main Jet

78

110

88

88

Pilot Jet

40

40

40

40

Starter Jet

55

60

55 or 60

60

Float

5gms

6.5gms

6.5gms

5gms

Air Screw adjustment

1/2-2 turns

1/2-2 turns

1/2-2 turns

1/2-2 turns

 

Model

125 Li III

150 Li III

Li 150 Special

150 SX

Li 150 Special (SX 150 engine)

Type of carb

SH1 18

SH1 18

SHI 18

SH1 20

SH1 20

Choke

18mm

18mm

18mm

20mm

20mm

Slide

5914-1

5914-2

5914-1

5914-2

5914 - 2

Needle

-

-

-

-

-

Atomizer

5899-1

5899-1

5899-2

5899-2

5899 - 5

Main Jet

99

105

101

102

102

Pilot Jet

42

45

45

45

45

Starter Jet

50

50

50

50

50

Float

5gms

5gms

5gms

5gms

5gms

Air Screw adjustment

1/2 turn

1/2 turn

1/2 turn

1/2 turn

1/2 turn

 

Model

150 GP

175 TV III

200 TV

200 SX

 200 GP
Type of carb

SH2 22

SH1 20

SH1 20

SH1 20

SH1 22
Choke

22mm

20mm

20mm 

20mm

22mm
Slide

7895 - 2

5914 - 1

5914 - 1

5914 - 1

7895 - 1
Needle

-

-

-

-

-
Atomizer

5899 - 2

5899 - 2

5899 - 2

5899 - 2

5899 - 2
Main Jet

118

106

108

103

118
Pilot Jet

45

50

48

48

45
Starter Jet

50

50

50

50

50
Float

5gms

5gms

5gms

5gms

5gms
Air Screw adjustment

1-2 turns

1/2 turn

1/2 turn

1/2 turn

1-2 turns

 

Model

75 S Vega-Cometa

Cento 100

J125

J125 Starstream
Type of carb

SH1 20

SHB 18/16

SHB 18/16

SHB 18/16

Choke

20mm

16mm

16mm

16mm

Slide

5914 - 1

6492 - 1

6492 - 1

6492 - 1

Needle

-

-

-

-

Atomizer

5899 - 6

-

-

-

Main Jet

68

70

72

72

Pilot Jet

45

40

40

40

Starter Jet

50

50

50

50

Float

5gms

3.5gms

3.5gms

3.5gms

Air Screw adjustment

1 turn

3/4 turn

3/4 turn

3/4 turn

 

CLOSE  WINDOW

 

PLEASE NOTE SOME INFORMATION ON THESE PAGES MAY VARY AS IT HAS COME FROM GENUINE / EDITED

LAMBRETTA-VESPA BOOKS / ARCHIVE / ETC. MODERN FUELS-OILS-ETC MAY NOT BE THE SAME AS SHOWN ON SOME OF THE CHARTS.

THESE ARE JUST A GUIDE.