Features & Benefits: primary Venturi: φ26mm Secondary Venturi:φ10.5mm Primary Auxiliary Venturi:φ27mm Secondary Auxiliary Venturi:φ10.5mm Primary Main Jet:1.4mm Secondary Main Jet:1.4mm Primary Air Corrector Jet:1.7mm Secondary Air Corrector Jet:1.6mm Primary Emulsion Tube: F50 Secondary Emulsion Tube: F50 Primary idle Jet:0.6mm Secondary Idle Jet: 0.5mm Pump Jet:φ0.5mm Needle Valve: 2.0mm Float Measurement :47mm Part Numbers: .