KYMCO Vitality 50, Manual, Page: 185 / 275

12
. CARBURETOR
12-13
VITALITY 50
CARBURETOR INSTALLATION
Check the carburetor insulator and O-ring
for wear or damage.
Install the carburetor and insulator onto the
intake manifold and tighten the two lock
nuts.
Connect the fuel tube and auto bystarter
wire connector.
Install the carburetor top. (
12-5)
Install the air cleaner onto the carburetor
and tighten the band screw.
AIR SCREW ADJUSTMENT
(2-STROKE)
Turn the air screw (1) clockwise until it
seats lightly and back it to the specification
given.
Air Screw Opening : 2 1/2 ± 1/2 turns
Start the engine and turn the air screw in or
out slowly to obtain the highest engine
speed.
Turn the throttle stop screw (2) to obtain the
specified idle speed.
Idle Speed : 1850 ± 100rpm
Slightly increase the engine speed and make
sure that the engine does not miss or run
erratic.
If the adjustment of the air screw within the
range of
±
1/2
turn makes no difference to
the engine performance, check other related
items.
O-rings
Insulator
When installation, do not allow foreign
particles to enter the carburetor.
Do not force the air screw against its
seat to prevent damage.
Route the auto bystarter wire correctly
and properly.
Do not force the air screw against its
seat to prevent damage.