Float Chamber - Sym GTS 250 Service Manual

4. Fuel System

Float Chamber

Disassembly
Remove 3 mounting screws and remove float
chamber cover.
Remove the fuel level plate, float pin, float and
float valve.
Inspection
Check float valve and valve seat for damage,
blocking.
Check float valve for wearing, and check valve
seat face for wear, dirt.
Caution
In case of worn out or dirt, the float valve and
valve seat will not tightly close causing fuel level
to increase and as a result, fuel flooding. A worn
out or dirty float valve must be replaced with a
new a new one.
Remove main jet, needle jet holder, needle jet,
slow jet and air adjustment screw.
Caution
Take care not to damage jets and adjust screw.
Before removing adjustment screw, turn it all
the way down and note the number of turns.
Does not turn adjust screw forcefully to avoid
damaging valve seat face.
Clean jets with cleaning fluid. Then use
compressed air to blow the dirt off.
Blow carburetor body passages with compressed
air.
4-8
To this chapter contents
3 screws
1 screw
Float pin
1 screw
Needle jet
Main jet
Slow jet
Float valve
Needle jet holder
Float
Float
Slow jet
Main jet