Kymco MO ZX50 Service Manual - chap 17 (imp scarico)

17. EVAPORATIVE/EXHAUST EMISSION

CONTROL SYSTEM

17-0

ZX / SC OUT 50

17

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

__________________________________________________________________________________

EVAPORATIVE/EXHAUST EMISSION

CONTROL SYSTEM

__________________________________________________________________________________

EXHAUST EMISSION CONTROL SYSTEM ............................. 17-1

EXHAUST MUFFLER .............................................................. 17-2

EXHAUST EMISSION RELATED SYSTEM INSPECTION........ 17-3

17

17. EVAPORATIVE/EXHAUST EMISSION

CONTROL SYSTEM

17-1

ZX / SC OUT 50

EXHAUST EMISSION CONTROL SYSTEM

The exhaust emission control system adopted by this model is an oxidizing catalytic converter
which is located in the middle of the exhaust muffler to reduce pollutants in the exhaust
emission.

Exhaust Muffler Diagram

FUNCTION

Item

Purpose

Function

Oxidizing
Catalytic
Converter

Reduce the concentration of
HC and CO in the exhaust
emission.

The precious metal in the oxidizing catalytic
converter is used to oxidize HC and CO in
the exhaust emission into CO2 and H2O to
avoid air pollution.

TROUBLESHOOTING

Engine runs erratic at idle speed and

Lack of power and high CO & HO high fuel consumption

1. Clogged exhaust muffler 1. Clogged exhaust muffler

2. Faulty oxidizing catalytic converter 2. Clogged carburetor

3. Carburetor adjusted improperly 3. Clogged air cleaner

4. Clogged air cleaner 4. Faulty spark plug

5. Faulty spark plug 5. Incorrect ignition timing

6. Incorrect ignition timing

Catalytic Converter