12. CARBURETOR VITALITY 50
SERVICE INFORMATION (4-STROKE)
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.
· When disassembling the carburetor, be sure to service the vacuum piston and float chamber.
· 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 assembly.
· 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.
· Remove the vacuum diaphragm before cleaning the carburetor air and fuel passages with
compressed air to avoid damaging the vacuum diaphragm.
· 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
Setting mark CVK104A
Type CVK 18
Float level (mm) 20.5
Main jet #82 (speed limited: #80)
Slow jet #35
Idle speed 1800rpm
Throttle grip free play 26mm
Pilot screw opening 21/2
12-3
Fast delivery and good communication ! The parts fit perfectly ! Thank you very much ! 
4.7 / 5