What is the reason why the chain saw cannot start?
Chainsaw is the abbreviation of 'gasoline chain saw' or 'gasoline power saw'. It is generally used in forest harvesting, timber production, branching, etc. as well as timber storage lumber production, railway sleeper saw cutting and other operations. The sawing mechanism is a saw chain, and the power part is a gasoline engine, which is convenient to carry and easy to operate. But maintenance and repair are more complicated. What is the reason why the chain saw cannot start? What is the reason why the chain saw is off? What is the reason why the chain saw cannot start? 1. Check the oil circuit and circuit to see if the oil filter is clogged, whether the carburetor is pumping oil normally, and whether the spark plug has electricity. Remove the spark plug and place it on the metal. 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. 3. Remove the carburetor, then drip some oil into the cylinder and start the machine a few times. If not, you must wash the carburetor or replace it, and finally check the cylinder. Teach you a method of maintaining the machine. If you don’t use the machine for a long time, you must get the oil out of the tank. Start the machine and burn the carburetor and cylinder oil. In order to prevent residual oil from clogging the carburetor, the air filter is usually cleaned, and the lubricating oil must be used with a better lubricating effect. What is the reason why the chain saw is off? In fact, there are several cases of failure to catch fire. It should be clear what caused the fire to fail. It is much more convenient to understand these troubleshooting and solution. First of all, let's talk about the basic maintenance ideas of the chain saw: understand the symptoms of the customer's products, and conduct a deeper inspection and judgment from three aspects according to the customer's description: oil circuit, circuit, cylinder. Usage conditions and symptoms include: the time of the last use, the environment and the state of use at the time, The oil circuit includes: carburetor, gasoline filter head, oil pipe, balancer, oil pipe intake pipe, etc. The circuit includes: magnetic flywheel igniter, coil/high voltage high, spark plug. Cylinder: piston, piston ring, cylinder. Next is the hands-on inspection and maintenance steps. The first step: we will manually pull the chain saw to see the overall operation. At this time, we can judge according to the obtained information: whether there is a clamping cylinder (experienced can directly determine whether there is compression and pulling cylinder), whether there is any difference Sound (can judge whether the magnetic flywheel and crankshaft are damaged), whether there is any problem with the starting assembly. And replace or maintain parts according to the relevant situation. Step 2: Judging the circuit. Remove the spark plug (the spark plug is under the air filter cover), check the spark plug for carbon deposits and normal contact. 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, such as whether 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: Use your fingers to block the outside of the cylinder spark plug and pull the pull plate to check whether the cylinder is pulled. 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, and adjust the carburetor pointer as appropriate. Unscrew the fuel cap and check the fuel filter head. And check the oil pipe, intake pipe, etc. for damage. Under normal circumstances, the problem can be solved by replacing or maintaining the problematic chain saw parts. In addition, the problems of oil seal damage, negative pressure pipe (balanced air pipe), magnetic flywheel and crankshaft, crankcase, and balancer are uncommon situations, which can only be considered when the problem cannot be solved under the above steps.