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Why is the chain saw stalled? Posted by : admin / Posted on : Dec 28,2020

There are generally two situations:
1. Sudden flameout: The filterability of the carburetor is not good, and the L screw of the carburetor needs to be readjusted.
2. Idle flameout: gas leak or carburetor adjustment does not match.
What should I do if the chain saw stalls?
First of all, let's talk about the basic maintenance ideas of chain saws: oil circuit, circuit, cylinder.
The oil circuit includes: carburetor, gasoline filter, oil pipe, equalizer, oil pipe intake pipe, etc.
The circuit includes: magnetic flywheel igniter, coil/high voltage, spark plug.
Cylinder: piston, piston ring, cylinder.
The next step is to analyze and repair steps based on the cause.
Step 1: We can manually pull the chain saw to see the overall operating status. At this time, we can judge according to the damage information: whether there is a stuck cylinder (if you have experience, you can indirectly judge whether there is shrinkage or pulling the 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: Determine 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 locally to contact the cylinder or the crankcase to conduct electricity and pull the chain saw. At this time, you can check the circuit, such as whether there is electricity, the size of the electricity and the discharge distance. This step can check whether the spark plug, coil and igniter are normal.
Step 3: Block the cylinder spark plug with your fingers, and pull the pull plate to check whether the cylinder can pull the cylinder. Or remove the muffler and check from the cylinder muffler to see if the piston has a pull mark on the cylinder.
Step 4: Check the oil circuit. Remove and clean the carburetor, adjust the carburetor pointer appropriately according to the condition, unscrew the fuel cap, check the fuel filter, and check whether the fuel pipe, intake pipe, etc. are damaged.
Under normal conditions, the results can be processed by replacing or maintaining the parts of the chain saw with a good performance.
In addition, oil seal damage, negative pressure pipe (equalizing air pipe), magnetic flywheel and crankshaft, crankcase, equalizer deposits are rare conditions, and can be considered when the above steps cannot be resolved.