Troubleshooting - DAELIM DAYSTAR Service Manual

21. Troubleshooting

Engine Does Not Starter is Hard to Start ......................................................21-1
Engine Lacks Power .................................................................................21-2
Poor Performance(At Low and Idle Speeds)...................................................21-3
Poor Performance (At High speed) ...............................................................21-4
Poor Handling ..........................................................................................21-4
Engine Doesn't Start or is Hard to Start
1. Check fuel flow to carburetor.
Reaching carburetor.
2. Perform a spark test.
Good spark.
3. Test cylinder compression.
Compression normal.
4. Start by following normal
procedure.
Engine does not start.
5. Remove and inspect spark plug.
Dry plug.
6. Close the choke and start engine
again
Not reaching
carburetor.
Weak or no
Stark.
Low compression.
Engine starts
but stops.
Wet plug.
Troubleshooting
Fuel tank empty.
Clogged fuel tube or fuel filter.
Sticking float valve.
Clogged fuel tank breather.
Faulty spark plugs.
Fouled spark plugs.
Faulty CDI unit.
Broken or shorted high tension wires.
Faulty pulse generator.
Faulty main switch.
Low speed of starter crank.
Incorrect valve clearance.
Faulty valve seat.
Worn cylinder and piston rings.
Seized valve.
Improper valve timing.
Improper chock valve operation.
Improper chock cable free play.
Carburetor incorrectly adjusted.
Improper ignition timing.
(Faulty CDI unit or pulse generator.)
Fuel contaminated.
Carburetor flooded.
Throttle valve open.
Choke closed.
Air cleaner dirty.
21
21-1