Troubleshoot
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10. Troubleshoot
1)Difficult to start
Phenomena Causes Elimination
No fuel,or fuel cock off
Fill fuel,turn on fue
cock
Vent on fuel tank cap blocked Unblock
Fuel cock blocked Clean
Orifice improperly regulate
or blocked
Regulate 、 clean 、
blow off
Fuel line
blocked
Needle valve or float jammed Repair or replace
Dirt fuel or deterioration
Replace fuel and clea
carburetor
Fuel mixed with water
Replace fuel and clea
carburetor
Exceeded fuel in cylinder
Drain fuel and dr
spark plug
Spark
plug
normal
Fuel
system
abnormal
Fuel line
unblocke
Fuel grade not correct Fill specified fuel
carbonized、electrode dirt
Clean carbonized dirt
Isolator damaged Replace spark plug
Electrode burnt out Replace spark plug
Spark
normal
Spark
Plug
poor
Improper spark plug clearance Regulate clearance
High tension wire damaged
Replace high tensio
wire
Ignition coil damaged
Replace high tensio
coil
Cylinder
Pressure
normal
Fuel
system
normal
Spark
plug
normal
No spark
Magnetic intensity inefficient
Magnetize or replace
Piston ring worn out o
broken
Replace
Piston ring agglutinated Clean carbonized dirt
Spark plug without washer o
tightened loosely
Fit washer or tighten
Leakage between head an
block
Replace cylinder
Cylinder
Pressure
abnormal
Fuel
system
normal
Ignition
System
normal
Spark
plug
normal
Poor air tight at valve Grind or replace