(VII) TROUBLESHOOTING
z Engine Troubleshooting
(VI) PERIODIC MAINTENANCE
z SPARK PLUG (Once per month)
1.Remove the spark plug, see
Picture 17.
2.Remove carbon deposits, see Picture
18.
3.Check for discoloration.
Normally, the spark plug tip should be
tan in color.
4.Check spark plug gap. It should be set
between 0.028” and 0.031” or between
0.7 and 0.8mm.
Problem Possible Cause
Corrective
Action
Engine
won’t start
Low
engine
output
Engine run
erratically
Insufficient
compression
Loose spark plug
Tighten plug
properly
Loose cylinder head bolt
Tighten bolt
properly
Damaged gasket Replace gasket
Sufficient
compression
No fuel
supplied to
combustion
chamber
Insufficient pulling
speed for starting rope
Pull rope sharply
Foreign matter in fuel
tank
Clean tank
Clogged fuel line
Clean fuel line with
dealer’s advice
No fuel in tank Supply fuel
Fuel shutoff not open
Open valve
Combustion
chamber
supplied with
fuel
Improper
spark
Spark plug
dirty with
carbon or
wet with fuel
Remove carbon or
wipe up spark plug
Damaged
spark plug
Replace spark plug
Faulty
magneto
Consult dealer
Improper
spark
Improper
adjustment
of carburetor
Consult dealer
Insufficient
pulling speed
for starting
rope
Pull rope sharply
Improper grade of fuel used Check fuel
Overloading
Check the working
condition
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