C.2
TROUBLESHOOTING
Ed. 05-2011
ENGINE
Trouble
Cause
Remedy
Engine does not start or has starting trou-
bles
Insufficient compression
1. Piston seized
Replace
2. Connecting rod small or big end seized
Replace
3. Worn piston ring
Replace
4. Worn cylinder
Replace
5. Cylinder head loosely tightened
Tighten
6. Spark plug loose
Tighten
Weak or no spark
1. Spark plug faulty
Replace
2. Fouled or wet spark plug
Clean or dry
3. Spark plug electrode gap too wide
Adjust
4. Ignition coil faulty
Replace
5. High-tension cables open circuit or shorted
Check
6. Key-operated switch faulty
Replace
The carburettor is not receiving fuel
1. Tank cap breather clogged
Clean
2. Fuel cock clogged
Clean
3. Clogged fuel inlet hose
Clean
4. Floater valve faulty
Replace
5. Linkage is blocking floater valve
Release
Carburettor floods
1. High fuel level in bowl
Adjust
2. Floater valve worn or stuck open
Replace or release
Engine lubrication
1. Electric oil pump faulty or dirty
Check
Engine stalls easily
1. Fouled spark plug
Clean
2. Electronic control unit faulty
Replace
3. Carburettor jets clogged
Clean
4. Low idle
Adjust
Summary of Contents for 2011 SMS 125
Page 1: ...Workshop Manual WRE 125 2011 SMS 125 2011 Ed 05 2011 ...
Page 6: ......
Page 7: ...b 1 b IMPORTANT NOTICES Ed 05 2011 Section ...
Page 9: ...A 1 A GENERAL INFORMATION Ed 05 2011 Section ...
Page 16: ......
Page 17: ...B 1 B MAINTENANCE Ed 05 2011 Section ...
Page 20: ......
Page 21: ...C 1 C TROUBLESHOOTING Ed 05 2011 Section ...
Page 27: ...D 1 D SETTINGS AND ADJUSTMENTS Ed 05 2011 Section ...
Page 54: ......
Page 55: ...E 1 E GENERAL PROCEDURES Ed 05 2011 Section ...
Page 83: ...F 1 F ENGINE DISASSEMBLY Ed 05 2011 Section ...
Page 100: ......
Page 101: ...G 1 G ENGINE OVERHAUL Ed 05 2011 Section ...
Page 124: ......
Page 125: ...H 1 H ENGINE ASSEMBLY Ed 05 2011 Section ...
Page 142: ......
Page 143: ...I 1 I FRONT SUSPENSION Ed 05 2011 Section ...
Page 145: ...I 3 H02628 WRE 125 H02629 SMS 125 H02630 SMS 125 H02631 SMS 125 FRONT SUSPENSION Ed 05 2011 ...
Page 154: ......
Page 155: ...J 1 J REAR SUSPENSION Ed 05 2011 Section ...
Page 163: ...L 1 L BRAKES Ed 05 2011 Section ...
Page 175: ...M 1 M ELECTRICAL SYSTEM Ed 05 2011 Section ...
Page 178: ...M 4 ELECTRICAL SYSTEM Ed 05 2011 ...
Page 216: ......
Page 217: ...N 1 N ENGINE COOLING Ed 05 2011 Section ...
Page 222: ......
Page 223: ...W 1 W SPECIAL TOOLS Ed 05 2011 Section ...
Page 230: ......
Page 231: ...Y 1 Y CHASSIS AND WHEELS Ed 05 2011 Section ...