6
. CYLINDER HEAD/VALVES
6-3
PEOPLE 250
TROUBLESHOOTING
•
The poor cylinder head operation can be diagnosed by a compression test or by tracing engine
top-end noises.
Poor performance at idle speed
White smoke from exhaust muffler
•
Compression too low
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Worn valve stem or valve guide
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Damaged valve stem oil seal
Compression too low
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Incorrect valve clearance adjustment
Abnormal noise
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Burned or bend valves
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Incorrect valve clearance adjustment
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Incorrect valve timing
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Sticking valve or broken valve spring
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Broken valve spring
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Damaged or worn camshaft
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Poor valve and seat contact
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Worn cam chain tensioner
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Leaking cylinder head gasket
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Worn camshaft and rocker arm
•
Warped or cracked cylinder head
•
Poorly installed spark plug
Compression too high
•
Excessive carbon build-up in combustion
chamber
Summary of Contents for People S 250
Page 21: ...1 GENERAL INFORMATION 1 18 PEOPLE 250 WIRING DIAGRAM ...
Page 34: ...2 EXHAUST MUFFLER FRAME COVERS 2 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 71: ...6 CYLINDER HEAD VALVES 6 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 83: ...7 CYLINDER PISTON 7 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 92: ...8 DRIVE AND DRIVEN PULLEYS V BELT 8 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 106: ...8 DRIVE AND DRIVEN PULLEYS V BELT 8 15 PEOPLE 250 Install the left crankcase cover 8 3 ...
Page 108: ...9 FINAL REDUCTION 9 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 117: ...10 A C GENERATOR STARTER CLUTCH 10 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 127: ...11 CRANKCASE CRANKSHAFT 11 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 134: ...12 COOLING SYSTEM 12 1 PEOPLE 250 SCHEMATIC DRAWING ...
Page 151: ...13 FUEL SYSTEM CARBURETOR FUEL PUMP FUEL TANK 13 1 PEOPLE 250 FUEL SYSTEM ...
Page 152: ...13 FUEL SYSTEM CARBURETOR FUEL PUMP FUEL TANK 13 2 PEOPLE 250 SCHEMATIC DRAWING ...
Page 191: ...15 REAR BRAKE REAR FORK REAR WHEEL REAR SHOCK ABSORBER 15 1 PEOPLE 250 SCHEMATIC DRAWING ...