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4. FUEL SYSTEM ZING125
SERVICE INFORMATION.......................4-1 CARBURETOR INSTALLATION.........4- 8
TROUBLESHOOTING..............................4-2 THROTTLE VALVE ASSEMBLY ........4- 8
THROTTLE VALVE DISASSEMBLY.....4-3 AIR CUT-OFF VALVE...........................4- 9
CARBURETOR REMOVAL.....................4-3 FUEL TANK............................................4-10
FLOAT/FLOAT VALVE/JETS/ AIR CLEANER REMOVAL...................4-11
ACCELERATING PUMP ..........................4-4
FLOAT LEVEL INSPECTION..................4-7
SERVICE INFORMATION
GENERAL INSTRUCTIONS
Gasoline is very dangerous. When working with gasoline, keep sparks and flames away
from the working area.
Gasoline is extremely flammable and is explosive under certain conditions. Be sure to
work in a well-ventilated area.
· Do not bend or twist control cables. Damaged control cables will not operate smoothly.
· When disassembling fuel system parts, note the locations of O-rings. Replace them with new
ones during reassembly.
· Before float chamber disassembly, loosen the drain screw to drain the residual gasoline into a
clean container.
· After the carburetor is removed, plug the intake manifold side with a clean shop towel to prevent
foreign matters from entering.
· The carburetor air jets and fuel jets must be cleaned with compressed air.
· When the motorcycle is not used for over one month, drain the residual gasoline from the float
chamber to avoid erratic idling and clogged slow jet due to deteriorated fuel.
SPECIFICATIONS
Item Standard
Venturi dia. 25
Identification number CVK003 C
Float level 17 mm
Main jet 95#
Slow jet 35#
Idle speed 1600100rpm
Throttle grip free play 26mm
Pilot screw opening 2
4-1