DAELIM NS125III

Troubleshooting
20-3
Poor Performance at Low Speed and Idling
1. Check ignition timing. Abnormal (1) Faulty CDI unit
(2) Faulty A.C. generator
2. Check the carburetor air screw Incorrect (1) Excessive fuel mixture
(Loosen screw to correct
adjustment level)
(2) Lean fuel mixture
(Tighten screw to correct
adjustment level)
3. Check the area around the Leaking (1) Faulty insulator packing
manifold for air leakage. (2) Loose carburetor
(3) Faulty inlet pipe packing
(4) Faulty insulator O-ring
4. Check sparks. Weak or intermittent (1) Carbon deposited on spark plugs
sparks or spark plugs contaminated
(2) Faulty CDI unit
(3) Faulty ignition coil
(4) Faulty A.C. generator
(5) Disconnected or shorted high
tension cord
(6) Faulty main switch
Poor Performance at High Speed
1. Check ignition timing Incorrect (1) Faulty CDI unit
(2) Faulty A.C. generator
2. Remove the fuel tube from the Insufficient fuel (1) Fuel tank empty
fuel valve. supply (2) Fuel tube or fuel filter clogged
(3) Fuel tank cap air hole clogged
3. Remove the carburetor, and Clogged (1) Clean
Check for clogged jets.
Correct
Normal
No leak
Sparks normal.
Correct
Fuel flows
Not clogged
Cause of Trouble
Cause of Trouble