KYMCO NEXXON 50 Service Manual page 52

4
. FUEL SYSTEM
Remove the air screw and throttle stop screw.
CAUTIONS !
＊
• Be careful not to damage the jets and jet
holder when removing them.
• Before removing, turn the throttle stop screw
and air screw in and carefully count the
number of turns until they seat lightly and
then make a note of this.
• Do not force the screw against its seat to
avoid seat damage.
• Be sure to install the O-ring in the reverse
order of removal.
Carburetor Cleaning
Blow compressed air through all passages of the
carburetor body.
Slow Jet/Main Jet Installation
Install the slow jet.
Install the needle jet, needle jet holder and main jet.
Install the throttle stop screw and air screw.
＊
• When installing the air screw, return it to the
original position as noted during removal
• After the carburetor is installed, be sure to
perform the Exhaust Emission Test.
Install the float valve, float and float pin.
4-9
Needle Jet Holder Needle Jet
Main Jet
Slow Jet
Float
NEXXON 50
Throttle Stop Screw
Air Screw
Air Screw
Throttle Stop Screw
Float Pin