LawnMaster NPTGSS2617A, Service Manual

Page: 14 / 45

14
GENERAL TROUBLESHOOTING
PROBLEM POSSIBLE CAUSE SOLUTION
The electric motor does
not start, and the battery
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The battery is not fully
charged or not inserted
correctly.
Charge the battery fully and insert it
correctly.
The motor does not start,
and the battery indicator
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The battery may be
overheated.
Allow the battery to cool to room
temperature. Re-start the machine after
about 30 minutes.
The motor does not start,
and the battery indicator
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Possible short circuit in the
electric motor or the motor
drive lines. Check that if short circuit occurs in the
electric motor or the motor drive lines
referring to page 35.
The motor does not start,
and the battery indicator
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alternatively.
The starting current is
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electric motor may be seized
or cannot rotate smoothly.
Check that if the engine or the electric
motor get stuck and cannot rotate
smoothly referring to page 35.
The motor does not start,
and the battery indicator
LED is continuously on. There may be an open
circuit from the PCB output
to the motor connecting line. Check that if open circuit occurs from the
PCB output to the motor connecting line
referring to page 35.
The electric motor starts,
but the engine does not
turn.
The starter drive system
may be broken.
Replace the starter drive system.
The engine will not start.
No spark.
Clean or replace the spark plug. Reset the
spark plug gap.
Check valve of the fuel tank
is blocked.
Remove the blockage or replace.
Incorrect lubricant/fuel. Use correct lubricant/fuel.
Incorrect carburetor
adjustment.
Re-adjust the carburetor.
The carburetor is blocked. Remove the blockage.
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Tighten the carburetor nut or replace the
carburetor washer.
The engine stops during
operation.
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The fuel line is blocked or
broken.
Remove the blockage or replace.
No fuel. Add fuel to the fuel tank.
The fuel tube is blocked. Remove the blockage.
The carburetor nut loosens
and has air leakage. Tighten the carburetor nut or replace the
carburetor washer.
No spark or weak spark.
Clean or replace the spark plug. Reset the
spark plug gap.