![background image](http://html1.mh-extra.com/html/daelim/a-four/a-four_service-manual_3154895179.webp)
18-3
TROUBLESHOOTING
POOR PERFORMANCE AT LOW SPEED AND IDLING
CAUSE OF TROUBLE
(1) Faulty CDI unit.
(1) Excessive fuel mixture.
(Loosen screw to correct
adjustment level.)
(2) Lean fuel mixture.
(Tighten screw to correct
adjustment level.)
(1) Faulty insulator packing.
(2) Loose carburetor.
(3) Faulty inlet pipe packing.
(4) Faulty insulator O-ring.
(1) Carbon deposited on spark plugs or
spark plugs contaminated.
(2) Faulty CDI unit.
(3) Faulty ignition coil.
(4) Faulty A.C. generator.
(5) Faulty main switch.
1. Check ignition timing.
2. Check the carburetor air screw.
3. Check the area around the manifold
for air leakage.
4. Check sparks.
Abnormal
Incorrect
Leaking
Weak or intermittent
sparks.
Normal
Sparks normal.
Correct
No leak.
POOR PERFORMANCE AT HIGH SPEED
CAUSE OF TROUBLE
(1) Faulty CDI unit.
(2) Faulty A.C. generator.
(1) Fuel tank empty.
(2) Fuel tube or fuel filter clogged.
(3)Fuel tank cap air hole clogged.
(1) Clean.
1. Check ignition timing.
2. Remove the fuel tube from the fuel
valve.
3. Remove the carburetor, and check
for clogged jets.
Incorrect
Insufficient fuel supply.
Clogged.
Correct
Fuel flows.
Not clogged.
Summary of Contents for A-FOUR -
Page 1: ......
Page 44: ...4 2 LUBRICATION SYSTEM OIL SYSTEM DRAWING ...
Page 51: ...MEMO ...
Page 52: ...FUEL SYSTEM 5 0 FUEL GAUGE FUEL TANK FUEL AUTO COCK STRAINER CARBURETOR ...
Page 62: ...ENGINE REMOVAL INSTALLATION 6 0 ...
Page 97: ...MEMO ...
Page 128: ...BRAKE SYSTEM 12 0 ...
Page 140: ...MEMO ...
Page 150: ...MEMO ...
Page 158: ...MEMO ...
Page 166: ...MEMO ...
Page 174: ...MEMO ...
Page 175: ...17 1 17 WIRING DIAGRAM 17 ...
Page 176: ...MEMO ...
Page 184: ...MEMO ...
Page 185: ...SERVICE MANUAL 2005 6 PRINTED 2005 6 PUBLICATION NO COPY ...