Sym Joyride 125 Service Manual page 52

Installation
Install needle, spring and needle seat to vacuum
piston.
Install vacuum piston to carburetor body and
align the indent on the diaphragm.
Install compress spring.
Install vacuum chamber cover and tighten 2
screws.
Caution
․Do not damage vacuum diaphragm.
․When tightening the vacuum chamber screw,
hold down vacuum piston.
To this chapter contents
Piston
Needle
4. FUEL SYSTEM
Needle seat Spring
Screw ×2
4-7