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18. EVAPORATIVE/EXHAUST EMISSION

CONTROL SYSTEM

18-0

FILLY LX 50

EXHAUST EMISSION CONTROL SYSTEM DIAGRAM

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18-0

EXHAUST EMISSION CONTROL SYSTEM

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18-1

SERVICE INFORMATION

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18-1

TROUBLESHOOTING

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18-1

MAINTENANCE SCHEDULE

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18-2

SECONDARY AIR CLEANER

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18-3

AIR INJECTION CUT-OFF VALVE (A.I.C.V.)

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18-4

REED VALVE

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18-5

EXHAUST MUFFLER

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18-6

EXHAUST EMISSION RELATED SYSTEM INSPECTION

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18-7

Secondary

Air Cleaner

Carburetor

Fresh Air

Exhaust

Intake Manifold

Piston

Crankshaft

Engine Oil

Valve

Reed Valve

Secondary

Air Inlet

Tube

Secondary Air

Vacuum Tube

Air Injection

Cut-off Valve

Summary of content (8 pages)

PAGE 1
8. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM F ILLY LX 50 EXHAUST EMISSION CONTROL SYSTEM DIAGRAM .................................................18-0 18 EXHAUST EMISSION CONTROL SYSTEM ......................................................................18-1 SERVICE INFORMATION....................................................................................................18-1 TROUBLESHOOTING..........................................................................................................
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM F ILLY LX 50 EXHAUST EMISSION CONTROL SYSTEM The exhaust emission control system adopted in this model utilizes the reed valve to draw secondary air into the exhaust system for re-combustion by means of exhaust pulsation so as to minimize the exhaust emission. FUNCTION Item Secondary Air Cleaner Purpose Filter secondary air. Prevent exhaust Air Injection Cut- muffler noise and off Valve backfiring at sudden deceleration.
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18.
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM F ILLY LX 50 SECONDARY AIR CLEANER REMOVAL Remove the frame body covers. Remove the two nuts attaching the rear light shell. Remove the rear turn signal light bulb and replace with a new one. Rear Light Shell Disconnect the secondary air cleaner connecting tube. Remove the air cleaner attaching bolts and the air cleaner.
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM AIR INJECTION CUT-OFF VALVE INSPECTION Inspect the air injection cut-off valve flow using a vacuum pump. If the flow is not within the specified values, replace with a new one. The flow should be at least 30 liter/min when a vacuum of 250mm/Hg is applied. The flow should be at least 1.6 liter/min when a vacuum of 320mm/Hg is applied. Check each connecting tube for cracks or damage and replace if necessary.
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM F ILLY LX 50 Cylinder Head Cover Bolts REED VALVE REMOVAL Remove the met-in box and frame center cover. Disconnect the secondary air inlet tube connector. Remove the four cylinder head cover bolts and two secondary air outlet tube bolts. Secondary Air Inlet Tube Bolt Reed Valve Cover Bolts Screws INSPECTION Remove the three screws attaching the reed valve cover and the reed valve. Check the reed valve for damaged or weak reeds.
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM F ILLY LX 50 Exhaust Muffler Joint Lock Nut EXHAUST MUFFLER REMOVAL Remove the two exhaust muffler joint lock nuts and two exhaust muffler lock bolts. Remove the exhaust muffler. ＊ • The temperature of exhaust muffler is very high. Be careful to avoid burns during working. Exhaust Muffler Lock Bolts INS PECTION 1. Inspect the exhaust muffler and joint for damage or crack. Replace if necessary. 2.
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18. EVAPORATIVE/EXHAUST EMISSION CONTROL SYSTEM EXHAUST EMISSION RELATED SYSTEM INSPECTION Clean or replace the air cleaner. (!3-4) Clean and adjust the carburetor. (!3-5) Inspect the auto bystarter system. (!5-4) Clean and inspect the spark plug. (!3-4) Inspect the ignition system. (!3-6) EXHAUST EMISSION TEST AND ADJUSTMENT 1. Start the engine and warm up for several minutes. (Engine surface temperature 50℃_ 60℃ ) 2. Adjust the idle speed to 1900rpm. 3.