Service Data and Specifications (S.D.S.) - General Specifications - Carburetor
EF & EC-731spec tableCarburetor model 217260-B7 (likely GA14DS/GA16DS carburetted engine).
General Specifications
Carburetor
Carburetor Specifications
Carburetor model
Primary/Secondary
Value217260-B7
Throttle chamber bore mm (in)
Primary/SecondaryP
Value26 (1.02)
Throttle chamber bore mm (in)
Primary/SecondaryS
Value30 (1.18)
Venturi diameter mm (in)
Primary/SecondaryP
Value19 (0.75)
Venturi diameter mm (in)
Primary/SecondaryS
Value27 (1.06)
Main jet - Standard
Primary/SecondaryP
Value#89
Main jet - Standard
Primary/SecondaryS
Value#145
Main jet - 1,000 m (3,300 ft)
Primary/SecondaryP
Value#87
Main jet - 1,000 m (3,300 ft)
Primary/SecondaryS
Value#140
Main jet - 2,000 m (6,600 ft)
Primary/SecondaryP
Value#85
Main jet - 2,000 m (6,600 ft)
Primary/SecondaryS
Value#135
Main jet - 3,000 m (9,900 ft)
Primary/SecondaryP
Value#82
Main jet - 3,000 m (9,900 ft)
Primary/SecondaryS
Value#131
Main jet - 4,000 m (13,200 ft)
Primary/SecondaryP
Value#79
Main jet - 4,000 m (13,200 ft)
Primary/SecondaryS
Value#129
Main air bleed
Primary/SecondaryP
Value#70
Main air bleed
Primary/SecondaryS
Value#60
Slow jet
Primary/SecondaryP
Value#40
Slow jet
Primary/SecondaryS
Value#80
Slow air bleed
Primary/SecondaryP
Value#80
Slow air bleed
Primary/SecondaryS
Value#80
Power jet
Primary/Secondary
Value#50
Choke type
Primary/Secondary
ValueAutomatic choke
Fast idle adjustment - Fast idle speed rpm
Primary/Secondary
Value2,200 ± 200
Fast idle adjustment - Clearance "A" (at 2nd step) mm (in)
Primary/Secondary
Value0.47 ± 0.07 (0.0185 ± 0.0028)
Vacuum break adjustment mm (in) - Clearance R1
Primary/Secondary
Value1.31 ± 0.14 (0.0516 ± 0.0055)
Vacuum break adjustment mm (in) - Clearance R2
Primary/Secondary
Value1.84 ± 0.28 (0.0724 ± 0.0110)
Dash pot adjustment - Dash pot touch speed rpm
Primary/Secondary
Value1,900 ± 200
Dash pot adjustment - Dash pot gap mm (in)
Primary/Secondary
Value0.47 ± 0.1 (0.0185 ± 0.0039)
Float height mm (in)
Primary/SecondaryH1
Value14.5 - 15.5 (0.571 - 0.610)
Float height mm (in)
Primary/SecondaryH2
Value44.5 - 45.5 (1.752 - 1.791)
NOTE
P: Primary S: Secondary #: 1/100 mm