11
9. TROUBLESHOOTING GUIDE
Case 1. Starting failure
Check
Probable Causes
Action
Fuel Tank
Incorrect fuel
Drain it and fill with correct
fuel
Fuel Filter
Fuel filter is clogged
Clean
Carburetor Adjustment
Screw
Out of normal range
Adjust to normal range
Sparking (no spark)
Spark plug is fouled/ wet plug gap is
incorrect
Clean/ dry and correct (GAP:
0.6
~
0.7 mm)
Spark Plug
Disconnected
Re-connect and ensure tightly
fitted
Case 2. Engine starts but does not keep running or hard re-starting.
Check
Probable Causes
Action
Fuel Tank
Incorrect fuel
Drain it and fill with correct
fuel
Carburetor Adjustment
Screw
Out of normal range
Adjust to normal range
Muffler,Cylinder(exhaust port)
Carbon is built-up
Wipe away
Air Cleaner
Clogged with dust
Wash
Cylinder Fin, Fan Cover
Clogged with dust
Clean