The reason why the chain saw can not start and stall

A chain saw is a hand saw powered by a gasoline engine. It is mainly used for logging and lumbering. Its working principle is to cut through the transverse movement of the interlaced L-shaped blades on the saw chain. It is widely used in forestry production such as logging, branching, timbering and other operations. The UANBUY chain saw is a must for forest logging, timbering, branching, timber yard production, and railway sleeper sawing. An indispensable tool.

Why does the chain saw fail to start?

1. Check the oil circuit and circuit, check whether the oil filter is blocked, whether the carburetor is pumping oil normally, whether the spark plug has electricity, remove the spark plug and place the top on the metal, and pull the machine to see if the spark plug has electricity. of.

2. Remove the air filter and check whether the air filter is clean by the way.

3. Remove the carburetor, and then drop some oil into the cylinder, and then start the machine a few times. If not, clean or replace the carburetor, and finally check the cylinder. Teach you a way to maintain the machine. If you do not use the machine for a long time, you must pour out the oil in the fuel tank and start the machine to burn out the oil in the carburetor and cylinder. To prevent residual oil from clogging the carburetor, clean the air filter more often. The lubricating oil must be better.

Why is the chain saw stalled?

In fact, there are several situations where you can’t catch a fire. It’s important to be clear about the circumstances under which it can’t catch a fire. It will be much easier to understand these problems.

First of all, let's talk about the basic maintenance ideas of chain saws: understand the customer's product usage, and conduct a deeper inspection and judgment from three aspects according to the customer's description: oil circuit, circuit, and cylinder.

Usage conditions and symptoms include: time of last use, environment and conditions of use at that time.

The oil circuit includes: carburetor, gasoline filter, oil pipe, balancer, oil pipe intake pipe, etc.

The circuit includes: magnetic flywheel igniter, coil/high voltage package, spark plug.

Cylinder: piston, piston ring, cylinder.

The next step is the hands-on inspection and maintenance steps of the uanbuy chain saw.

The first step: We will directly pull the chain saw manually to see the overall operation. At this time, we can judge based on the information obtained: whether there is a stuck cylinder (experienced can directly judge whether there is compression and pulling), whether there is any difference (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 relevant conditions.

Step 2: Determine the circuit. Remove the spark plug (the spark plug is under the air filter cover), and check whether the spark plug deposits carbon and whether the contact is normal. Make the discharge part of the spark plug contact the cylinder or the conductive part of the crankcase, and pull the chain saw. At this time, you can check the circuit, if there is electricity, the size of the electricity and whether the discharge interval is stable. This step can check whether the spark plug, coil and igniter are normal.

Step 3: Block the outside of the spark plug of the cylinder with your fingers and pull the pull plate to check whether the cylinder is pulling the cylinder, or remove the muffler, and check whether the piston is pulling the cylinder from the cylinder muffler.

Step 4: Check the oil circuit. Remove and clean the carburetor, adjust the carburetor pointer appropriately according to the situation, unscrew the fuel cap, and check the fuel filter. And check the oil pipe, intake pipe, etc. for damage.

Under normal circumstances, the problem can be solved by replacing or maintaining the parts of the chain saw in question.

In addition, damage to the oil seal, negative pressure pipe (balanced air pipe), magnetic flywheel and crankshaft, crankcase, balancer, etc. are uncommon situations, which can be considered when the problem cannot be solved under the above steps.

After the chain saw is used, the chain saw must be maintained so that the working efficiency can be guaranteed when the chain saw is used next time. The first is to remove the impurities in the oil inlet hole and the guide plate groove at the root of the chain saw guide plate to ensure the smoothness of the oil inlet hole. Secondly, the sundries in the guide plate head should be removed and a few drops of engine oil should be added.