Operation Of Carburetor Jets - KYMCO Bet & Win 125 User Manual

13
. FUEL SYSTEM/CARBURETOR/
FUEL PUMP/ FUEL TANK

OPERATION OF CARBURETOR JETS

1. LOW SPEED
Venturi (slightly opened throttle valve)
Air
Low Speed Air Inlet
Fuel in Float Chamber‡ Slow Jet
-------------------- Low Speed Small Jet Holes
2.MIDDLE SPEED
Venturi (halfway opened throttle valve)
Air
High Speed Air Jet
Fuel in Float Chamber‡ Main Jet
Main Jet (The slow jet also works.)
Low & Middle Speed Supplementary Device:
Pilot Screw
Low & Middle Speed Supplementary Fuel Inlets
13-3
Vacuum Tube
ACV
Slow Jet
Bypass Jet
Bet & Win 125/150
Air Bleed Holes‡ Mixture.......
Air Bleed Holes‡ Mixture.......
Low Speed Air Jet
Vacuum Diaphragm
Throttle
Valve
Main Jet
Air