PB-251MAINTENANCE GUIDE
50
8 MAINTENANCE GUIDE
8-2 Troubleshooting guide
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TROUBLE
Engine does not crank.
Engine does not start.
Fuel leaks.
Idling is not stable.
Acceleration is poor.
Engine stalls at high speed.
Engine lacks power.
Engine overheats.
Engine misfires.
Engine / others are extremely noisy.
Fuel consumption is excessive.
Vibration is excessive.
Engine does not stop.
CHECKING
Starter system
Starter pawl / spring
Rewind spring
Ignition system
Sparks
Spark plug
Spark plug cap / coil
Ignition switch
Ignition coil
Pole shoe air gaps
Flywheel
2-5
2-2
3-2
3-3
3-4
3-6, 3-7
3-5, 3-8
3-9
3-10
(Continued)
Check first.
13 12 11 10 09 08 07 06 05 04 03 02 01
13 12 11 10 09 08 07 06 05 04 03 02 01
Flywheel key 3-10
REFERENCES
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