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22-3
SERVICE INFOR
Troubleshooting
10. Check oil level.
Incorrect.
Oil level too high.
Oil level too low.
Contaminated oil.
11. Remove cylinder head cover
Valve train
Clogged oil passage.
and inspect lubrication.
lubricated
Clogged oil filter element.
properly.
12. Check for engine
Overheating
Excessive carbon build-up in
overheating
combustion chamber.
Use of poor quality fuel.
Clutch slipping.
Lean fuel mixture.
13. Accelerate or run at
Engine knock.
Worn piston and cylinder.
high speed.
Lean fuel mixture.
Use of poor quality fuel.
Excessive carbon build-up in
combustion chamber.
Ignition timing too advanced.
(Faulty ECU unit or crank position sensor.)
Valve train lubricated
properly.
Correct.
Poor Performance(At Low and Idle Speed)
1. Check the ignition timing and
Incorrect.
Oil level too high.
valve clearance.
Improper ignition timing.
(Faulty ECU unit or crank position sensor.)
2. Check for leading intake pipe
Leaking.
Loose carburetor insulator.
Damaged insulator.
Insulator not installed properly.
3. Perform spark test.
Weak or intermittent
Faulty, carbon, wet fouled spark plug.
spark.
Faulty ECU
Faulty A.C. generator.
Faulty ignition coil.
Faulty crank position sensor.
Correct.
No leak.
Summary of Contents for DAYSTAR VL125E
Page 12: ...1 11 General Information...
Page 13: ...1 12 General Information...
Page 14: ...1 13 General Information...
Page 15: ...MEMO...
Page 23: ...MEMO...
Page 39: ...Fuel System 4 0...
Page 91: ...MEMO...
Page 96: ...MEMO...
Page 97: ...7 0 Clutch Gearshift...
Page 110: ...MEMO...
Page 111: ...8 0 A C Generator Starter Clutch...
Page 120: ...MEMO...
Page 121: ...9 0 Cylinder Head Valve...
Page 138: ...MEMO...
Page 139: ...10 0 Cylinder Piston...
Page 147: ...11 0 Crank Case Transmission Crankshaft 1 2kgf m 12N m 1 1kgf m 11N m...
Page 159: ...12 0 MEMO...
Page 166: ...13 5 MEMO...
Page 167: ...14 0 Front Wheel Front Fork Steering...
Page 189: ...15 0 Rear Wheel Rear Brake Suspension...
Page 201: ...16 0 Hydraulic Brake...
Page 213: ...17 0 Charging System Battery Regulator Rectifier Fuse Battery AC Generator...
Page 221: ...18 0 Ignition System A C Generator Spark Plug Ignition Coil ECU...
Page 226: ...18 5 Ignition System...
Page 227: ...18 6 MEMO...
Page 228: ...19 0 Electric Starter Starter Motor Battery Starter Magnetic Switch...
Page 235: ...MEMO...
Page 236: ...20 0 SERVICE Lights Switches Horn...
Page 247: ...MEMO...
Page 248: ...21 1 Wiring Diagram 21 Wiring Diagram...
Page 249: ...21 2...