DAELIM Roadwin 250R FI VJF125, Service Manual

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21-1
21. TROUBLESHOOTING
ENGINE WON’T START
OR IS HARD TO START
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21-1
ENGINE LACKS POWER
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21-2
POOR PERFORMANCE
(AT LOW AND IDLE SPEED)
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21-3
POOR PERFORMANCE
(AT HIGH SPEED)
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21-4
ENGINE WON’T START OR IS HARD TO START
1. Check fuel flow to carburetor. Fuel not supplied Fuel tank empty.
to the carburetor Clogged fuel tube or fuel filter.
Sticking float valve.
Clogged fuel tank cap hole.
2. Check the spark plug. Weak or no Faulty spark plug.
spark Contaminated spark plug.
Disconnected or shorted high tension wires.
Faulty pulse generator.
Faulty main switch.
3. Test cylinder compression. Low compression Low speed of starter crank.
Incorrect valve clearance.
Faulty valve seat.
Worn cylinder and piston rings.
Seized valve.
Improper valve timing.
4. Start by following normal Engine starts Improper chock valve operation.
procedure. but stops. Improper chock cable free play.
Carburetor incorrectly adjusted.
Improper ignition timing.
Fuel contaminated.
Lean fuel mixture.
5. Remove and inspect spark plug. Wet plug Carburetor flooded.
Throttle valve open.
Choke closed.
Air cleaner dirty.
Rich fuel mixture.
Fuel is supplied
Good spark
Compression normal
Engine does not start.
Dry plug
INSPECTION CAUSE OF TROUBLE
6. Close the choke and start
engine again.
POOR HANDLING
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21-4
POOR FRONT/REAR SUSPENSION
PERFORMANCE
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21-5
FUEL GAUGE
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21-5
21