There are generally two situations when the chain saw is turned off:
1. Abrupt flameout: The filterability of the carburetor is not good, and the L screw of the carburetor needs to be readjusted.
2. Idle flameout: air leakage or carburetor adjustment does not match.
What to do if the chain saw goes out?
First, let's talk about the basic maintenance ideas of the chain saw: oil circuit, circuit, cylinder.
The oil circuit includes: carburetor, gasoline filter head, oil pipe, equalizer, oil pipe intake pipe, etc.
The circuit includes: magnetic flywheel igniter, coil/high voltage high, spark plug.
Cylinder: piston, piston ring, cylinder.
Connected to the analysis and maintenance steps according to the reason.
The first step: we can manually pull the chain saw to see the overall operation status. At this time, we can judge according to the damaged information: whether there is a stuck cylinder (when experienced, we can indirectly determine whether there is tightening and pulling cylinder), and whether there is abnormal noise (It can be judged whether the magnetic flywheel and crankshaft are damaged), whether there is any problem with the starting assembly, and replace or maintain the parts according to the actual situation.
Step 2: Judging the circuit. Remove the spark plug (the spark plug is under the air filter cover), and check whether the spark plug can deposit carbon and whether the contact is normal. Make the spark plug discharge partially contact the cylinder or can be electrically conductive with the crankcase, and pull the chain saw. At this time, you can reflect on the circuit, such as whether there is electricity, the size of the electricity and whether the discharge distance can be bumpy. This step can reflect on whether the spark plug, coil and igniter are normal.
The third step: Use your fingers to block the inside of the spark plug of the cylinder and pull the pull plate to reflect whether the cylinder can pull the cylinder. Or remove the muffler and see if the piston has pull marks from the cylinder muffler.
Step 4: Check the oil circuit. Remove the carburetor and clean it, adjust the carburetor pointer appropriately according to the situation, unscrew the fuel cap, check the fuel filter head, and check the fuel pipe, intake pipe, etc. for damage.
Under normal conditions, the results can be handled by replacing or maintaining the chain saw accessories.
In addition, damaged oil seals, negative pressure tubes (equalizing trachea), magnetic flywheels and crankshafts, crankcases,