Sym Fiddle III 50 Service Manual page 113

SYM
Remove fuel needle seat, spring, and
injector needle.
Check if the vacuum piston for wear out,
crack or other damage.
Check if the diaphragm for damage or crack.
Cautions
Do not damage vacuum diaphragm.
Installation
Install injector needle, spring and fuel needle
seat to vacuum piston.
Cautions
Note direction as installing the piston
set because wrong direction of the
piston cab not be installed.
Align the indent of vacuum
diaphragm with the carburetor body.
Install vacuum piston to carburetor body.
Install compress spring.
Install vacuum chamber cover and tighten 2
screws.
fuel needle
seat
fuel needle
spring
injector
needle
piston
piston diaphragm lock position
TPS
Vacuum Chamber cover
4. FUEL SYSTEM
Piston spring
Screws×2
4-5