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9
. Failure Analysis and Its Eliminating Methods
Problem analysis and solving
Example 1: Difficulties in starting engine in cooling state.
Whether thespark plug is damp →Wipe dry thespark plug
↓
Whether the spark plug produces electric spark →Replace the spark plug
↓
Too much fuel absorbed →Reduce the fuel supply
Example 2: Difficulties in restarting after a sudden stop
Whether fuel is used up or the carburetor is blocked →Refill the fuel tank or clean the
carburetor
↓
Whether the fuel filter is blocked →Clean the fuel filter
↓
Too much carbon deposit in the spark plug → Remove carbon deposit from
the spark plug and clean the filter
element
Example 3: Slow speed and weak power
Carbon deposit in the cylinder or silencer →Remove carbon deposit
↓
Whether the oil tube and the air vent of the oil can is blocked →Clean
↓
Air filter is blocked → Clean the filter
Example 4: Abnormal sound
Carbon deposit found in the combustion chamber →Remove carbon deposit
↓
Serious abrasion in active components → Replace
Example 5: The machine is working normally but the work efficiency is very low
Rubber ring of the impact piston is aged and worn →Replace
Please contact with local sales agent or contractual maintenance site for maintenance.