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20. EXHAUST EMISSION CONTROL

SYSTEM

20-0

DINK 200

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EXHAUST EMISSION CONTROL SYSTEM

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SCHEMATIC DRAWING ............................................................ 20-1

EXHAUST EMISSION CONTROL SYSTEM FUNCTION............. 20-1

TROUBLESHOOTING ................................................................ 20-2

SERVICE INFORMATION .......................................................... 20-2

SECONDARY AIR CLEANER..................................................... 20-3

AIR INJECTION CUT-OFF VALVE (A.I.C.V.)............................. 20-3

REED VALVE ............................................................................ 20-4

Summary of content (5 pages)

PAGE 1
20.
PAGE 2
0. EXHAUST EMISSION CONTROL SYSTEM DINK 200 SCHEMATIC DRAWING Carburetor Vacuum Air Injection Cut-off Valve Reed Valve Secondary Air Cleaner Into Hole Secondary Air Cleaner 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.
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20. EXHAUST EMISSION CONTROL SYSTEM TROUBLESHOOTING High CO at idle speed 1. Damaged or clogged reed valve 2. Damaged or clogged air injection cut-off valve 3. Clogged air cleaner Backfiring at sudden deceleration 1. Damaged reed valve (malfunction) 2. Faulty air injection cut-off valve (unable to close) 3. Carburetor incorrectly adjusted 4. Faulty air cut-off valve 5. Leaking vacuum tube Exhaust muffler noise 1. Faulty air injection cut-off valve 2. Broken vacuum tube 3.
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20. EXHAUST EMISSION CONTROL SYSTEM DINK 200 Secondary Air Cleaner / A.I.C.V. SECONDARY AIR CLEANER / AIR INJECTION CUT-OFF VALVE (A.I.C.V.) REMOVAL Remove the seat. (2-4) Remove the body cover. Disconnect the secondary air cleaner /(A.I.C.V) connecting tube. Vacuum Tube Air Outlet Tube Air Inlet Tube Bolt Bolt Bolt 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.
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20. EXHAUST EMISSION CONTROL DINK 200 SYSTEM REED VALVE Reed Valve Cover Bolt Cylinder Head Cover Bolt REMOVAL Remove the frame center cover. Remove the floor board cover. Disconnect the secondary air inlet tube connector. Remove the reed valve cover three bolts and two secondary air outlet tube bolts. Secondary Air Inlet Tube Bolt Remove the three bolts attaching the reed valve cover and the reed valve. Reed Valve INSPECTION Check the reed valve for cracks, damage, big clearance or weak reeds.