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Troubleshooting
3
Problem
Possible Cause
Fault Position
Test & Solution
Fail to start/stop in
running
Weak connection of the
white cable
Battery
connection
terminals (base)
Open the housing, check if the white
cable that connects to the battery
connection terminal was insufficiently
soldered (weak connection), re-solder
the cable and check the function.
Electric assembly is
broken
Electric assembly Open the housing, replace PCBA
Big deviation of the speed
sensor
Motor assembly
Open the housing, replace the motor
assembly
No oil lubrication
when cutting
Oiling hole in housing was
blocked by debris
Oil hole in
housing
Open the housing, clear the oil hole in
housing.
Oil pumper was blocked
by oil residue
Oil tank assembly
Open the housing, replace the oil tank
assembly
Plastic gear was worn out Plastic gear
Open the housing, replace the plastic
gear; check and clear the oil hole in the
housing.
Saw chain cannot or
hard to move in guide
bar
Guide bar was worn out
Guide bar
Replace the guide bar