21-1
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
21. Troubleshooting
Engine Doesn’t Start or is Hard to Start
1. Check fuel flow to carburetor.
Not reaching
Fuel tank empty.
carburetor.
Clogged fuel tube or fuel filter.
Sticking float valve.
Clogged fuel tank breather.
2. Perform a spark test.
Weak or no
Faulty spark plugs.
Stark.
Fouled spark plugs.
Faulty CDI unit.
Broken 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.
(Faulty CDI unit or pulse generator.)
Fuel contaminated.
5. Remove and inspect spark plug.
Wet plug.
Carburetor flooded.
Throttle valve open.
Choke closed.
Air cleaner dirty.
6. Close the choke and start engine
again
21
Reaching carburetor.
Good spark.
Compression normal.
Engine does not start.
Dry plug.
Summary of Contents for DAYSTAR -
Page 1: ...SERVICE MANUAL...
Page 22: ...MEMO...
Page 38: ...Fuel System 4 0...
Page 55: ...MEMO...
Page 56: ...6 0 Clutch Gearshift...
Page 69: ...7 0 A C Generator Starter Clutch...
Page 78: ...MEMO...
Page 79: ...8 0 Cylinder Head Valve...
Page 96: ...MEMO...
Page 97: ...9 0 Cylinder Piston...
Page 105: ...10 0 Crank Case Transmission Crankshaft 1 2kgf m 12N m 1 1kgf m 11N m...
Page 126: ...12 5 MEMO...
Page 127: ...13 0 Front Wheel Front Fork Steering...
Page 149: ...14 0 Rear Wheel Rear Brake Suspension...
Page 161: ...15 0 Hydraulic Brake...
Page 173: ...16 0 Charging System Battery Regulator Rectifier Fuse Battery AC Generator...
Page 181: ...17 0 Ignition System A C Generator Spark Plug Ignition Coil CDI Unit...
Page 188: ...MEMO...
Page 189: ...18 0 Electric Starter Starter Motor Battery Starter Magnetic Switch...
Page 196: ...MEMO...
Page 197: ...19 0 Lights Switches Horn...
Page 208: ...20 1 Wiring Diagram 20 Wiring Diagram 20...
Page 209: ...MEMO...