6. CYLINDER HEAD/VALVE
6-3
Troubleshooting
Engine performance will be affected by troubles on engine top parts. The trouble usually can be
determined or by performing cylinder compression test and judging the abnormal noise generated.
Low compression pressure
1. Valve
y
Improper valve adjustment
y
Burnt or bent valve
y
Improper valve timing
y
Valve spring damage
y
Valve carbon deposit.
2. Cylinder head
y
Cylinder head gasket leaking or damage
y
Tilt or crack cylinder
3. Piston
y
Piston ring worn out.
High compression pressure
y
Too much carbon deposit on combustion chamber or piston head
Noise
y
Improper valve clearance adjustment
y
Burnt valve or damaged valve spring
y
Camshaft wear out or damage
y
Chain wear out or looseness
y
Auto-tensioner wear out or damage
y
Camshaft sprocket
y
Rocker arm or rocker arm shaft wear out
To this chapter contents
Summary of Contents for Quad Lander 300
Page 1: ...FORWARD CONTENTS HOW TO USE THIS MANUAL SERIAL NUMBER Quad Lander 300 SERVICE MANUAL...
Page 5: ...Home page Contents SERIAL NUMBER Frame number Engine number...
Page 17: ...1 GENERAL INFORMATION 1 12...
Page 41: ...2 MAINTENANCE INFORMATION 2 17...
Page 49: ...3 LUBRICATION SYSTEM 3 8 Notes To this chapter contents...
Page 51: ...4 FUEL SYSTEM 4 2 UA30A A UA30A1 6 Fuel tank cap Fuel tank Carburetor Fuel valve Fuel Strainer...
Page 69: ...4 FUEL SYSTEM 4 20 Notes To this chapter contents...
Page 144: ...10 ALTERNATOR STARTING CLUTCH 10 10 Note To this chapter contents...
Page 178: ...13 BODY COVER 13 14...
Page 192: ...14 FRONT BRAKE FRONT WHEEL 14 14 Notes To this chapter contents...
Page 213: ...16 REAR BRAKE REAR WHEEL REAR CUSHION 16 11...
Page 242: ...17 ELECTRICAL SYSTEM 17 21 To this chapter contents...
Page 243: ...18 ELECTRICAL DIAGRAM 18 1 18 Home page Contents QUAD LANDER 300 ELECTRICAL DIAGRAM...
Page 244: ...18 ELECTRICAL DIAGRAM 18 2 Notes Home page Contents...