TROUBLESHOOTING:
8
Difficulties in starting engine
in cooling state.
Difficulties in restarting after
a sudden stop
Slow speed and weak power
Abnormal sound
The machine is working
normally but the work
efficiency is very low
Whether Spark Plug is damp
↓
Whether the spark plug
produces electric spark
↓
Too much fuel absorbed
Whether fuel is used up or
carburetor is blocked
↓
Whether fuel filter is blocked
↓
Too much carbon deposit of
Spark Plug
Carbon deposit of the cylinder
or silencer
↓
Either the oil tube and the
air vent of the fuel Tank is
blocked
↓
Air filter is blocked
Carbon deposit found in
combustion chamber
↓
Serious abrasion in active
components
Rubber ring of impact piston is
aged and worn
• Wipe dry Spark Plug
• Replace Spark Plug
• Reduce the fuel supply
• Refill Fuel tank or clean
carburetor
• Clean fuel filter
• Remove carbon deposit of
Spark Plug and clean filter
element
• Remove carbon deposit
• Clean
• Clean filter
• Remove carbon deposit
• Replace
• Replace or renew
Problem
Analysis
Action
