Sym GTS 250 Service Manual page 54

Assembly
Install main jet, needle jet holder, needle jet, slow
jet and air adjustment screw.
Caution
Set the air adjustment screw in according to
number of turns noted before it was removed.
Install the float valve, float, and float pin.
Checking fuel level
Caution
 Check again to ensure float valve, float for
proper installation.
 To ensure correct measurement, position the
float meter in such a way so that float chamber
face is vertical to the main jet.
Fuel level: 18.5mm
Installation of carburetor
Install carburetor in the reverse order of removal.
Following adjustments must be made after
installation.
˙Throttle cable adjustment.
˙Idle adjustment
To this chapter contents
Air adjustment screw
1 screw
Throttle cable adjustment nuts
4. Fuel System
Main jet
Slow jet
Float
4-9