Sym RV 250i Service Manual page 267

18. Emission Control System
Catalytic Converter (CATA)
1. Construction:
Engine
2. Description:
1) The function of the catalytic converter is to transfer unburned CO, HC, and NOx harmless CO
N gases.
2
2) Pt, Pd, Rh...etc. precious metals are used into the catalytic converter so use only unleaded
gasoline to prevent from cause the catalytic converter to fail.
18-4
To this chapter contents
Catalytic converter
Exhaust muffler
, H O,
2 2