Learn that, and gasoline chainsaws can repair themselves

Gasoline chain saw is a common garden tool, widely used in tree pruning, wood cutting and other operations. However, there will inevitably be some minor faults in the use of chain saws. If you can master some basic maintenance knowledge, you can not only save maintenance costs, but also improve work efficiency. Here are some common gasoline chain saw failures and how to repair them, to help you solve problems on your own when you encounter them.

First, common faults and maintenance methods
(1) Difficulty in starting the engine
Check the spark plug
Carbon buildup or damage to the spark plug can make it difficult to start the engine. Remove the spark plug and check its electrodes for carbon buildup or ablation. If there is more carbon in the spark plug, the electrode can be gently polished with sandpaper to restore it to clean; If the spark plug is damaged, it needs to be replaced with a new spark plug.
It is recommended to clean or replace the spark plug regularly, and generally check the spark plug every 50 hours or so.

Check fuel system
Check that there is sufficient fuel and that the fuel filter is blocked. If the fuel filter is blocked, it will cause insufficient fuel supply and affect engine starting. Remove the fuel filter and rinse it with gasoline to ensure it runs smoothly.
Check the fuel lines for air leakage or blockage. If there is a leak, it will cause the fuel to be unable to supply normally, affecting the engine start. Check whether the fuel line is tightly connected. If there is gas leakage, repair it in time.

Check the carburetor
Clogged or improperly adjusted carburetors can also make it difficult to start the engine. Remove the carburetor and check its interior for any impurities or clogs. If the carburetor is blocked, it can be cleaned with carburetor cleaner to ensure that it is smooth.
Check that the carburetor needle and float are working properly. If the fuel pin is stuck or the float is damaged, the fuel supply will be poor and the engine will be affected. If the oil needle is stuck, you can gently move it with a fine needle to restore it to normal operation; If the float is damaged, it needs to be replaced with a new float.

(2) The chain does not rotate
Check the chain tension
Improper chain tension will cause the chain to not rotate. Check the tension of the chain. If the chain is too loose or too tight, it needs to be adjusted. When adjusting the chain tension, first loosen the fixing nut of the chain cover, and then adjust the tension nut to make the chain tension moderate.
Under normal circumstances, the tension of the chain should be the finger can press the chain 10-15mm.

Check the chain and guide
Check whether the chain is damaged or stuck. If the chain is damaged, such as the chain is broken or the chain pitch is stretched, it will cause the chain to not rotate. Check the appearance of the chain, if it is damaged, it needs to be replaced with a new chain.
Check whether the guide is deformed or damaged. If the guide is deformed or damaged, the chain will not run smoothly or even get stuck. Check the appearance of the guide plate. If it is deformed or damaged, replace it with a new one.

Check clutch
Clutch failure can also cause the chain not to turn. Check whether the clutch is working properly, if the clutch is damaged or worn, it will cause the chain to not turn properly. Check the appearance of the clutch, and if there is damage or wear, a new clutch needs to be replaced.
Check the wear of the clutch regularly, generally every 100 hours or so to check the clutch.

(3) Insufficient engine power
Check the air filter
Clogged air filters can lead to insufficient engine intake, which affects engine power. Remove the air filter and check for blockage. If the air filter is blocked, it can be rinsed with water and then dried before installation.
It is recommended to clean or replace the air filter regularly, generally cleaning the air filter every 20 hours or so.

Check the exhaust pipe
Blockage of the exhaust pipe will lead to poor engine exhaust, which will affect the engine power. Remove the exhaust pipe and check for carbon buildup or blockage inside. If the exhaust pipe is blocked, you can use a wire brush to clean up carbon deposits and ensure that the exhaust pipe is unblocked.
Clean the exhaust pipe regularly, generally clean the exhaust pipe every 50 hours or so.

Check engine spark plugs and ignition systems
Carbon accumulation or damage to the spark plug can lead to poor engine ignition, which affects engine power. Check whether the electrode of the spark plug is carbon or ablation, if the spark plug has more carbon, you can use sandpaper to gently polish the electrode; If the spark plug is damaged, it needs to be replaced with a new spark plug.
Check whether the ignition system is working properly. If the ignition system fails, it will cause poor ignition of the engine and affect the engine power. Check whether the ignition coil and high voltage cable are damaged. If they are damaged, replace them with new ones.

Second, daily maintenance and maintenance
(1) Regular cleaning
Clean the fuselage of dust and debris
After each use, wipe the fuselage with a clean cloth to clean up dust and debris and prevent dust accumulation from affecting the performance of the machine.

Clean the chain and guide
Regularly clean wood chips and debris on the chain and guide plate to prevent the chain from getting stuck or damaged. It can be cleaned with a special chain cleaner and then wiped clean with a clean cloth.

(2) Regular inspection
Check fuel and lubricants
Check fuel and lubricating oil levels regularly to ensure adequate oil levels. If the amount of oil is insufficient, add fuel and lubricating oil that meet the requirements in time.

Check the chain tension
Check the tension of the chain regularly to ensure that the chain tension is moderate. If the chain is too loose or too tight, adjust the chain tension in time.

Check screws and nuts
Check regularly whether the screws and nuts in each part of the machine are loose. If they are loose, tighten them in time. Loose screws and nuts can cause unstable operation of the machine and even damage the machine.

(3) Regular replacement
Replace the air filter
The air filter is an important part to protect the engine, and the regular replacement of the air filter can ensure the smooth intake of the engine and improve the performance and life of the engine.

Replace the fuel filter
The fuel filter can filter impurities in the fuel to prevent impurities from entering the engine and affecting the engine performance. Regular replacement of the fuel filter can ensure the clean fuel and improve the performance of the engine.

Replace the spark plug
Spark plug is an important part of engine ignition, regular replacement of spark plug can ensure good ignition performance of engine, improve engine power and efficiency.

Third, safety precautions
(1) Operation safety
Wear protective gear
When operating a gasoline chain saw, wear protective equipment such as protective gloves, goggles, and earplugs to prevent injuries to the human body.

Keep a safe distance
Maintain a safe distance during operation to avoid injury to the human body from the machine. Do not point the machine at yourself or others to prevent breakage of the chain or splashes of wood chips.

(2) Maintenance safety
Cut off the power
When repairing the gasoline chain saw, the power supply must be cut off first to ensure that the machine is stopped to prevent injury caused by accidental starting of the machine.

Use the right tools
Use appropriate tools during maintenance to avoid machine damage or injury to maintenance personnel caused by inappropriate tools.

Through the above methods, you can easily solve some common failures of gasoline chain saws and ensure the normal operation of the machine. At the same time, regular maintenance and maintenance can extend the service life of the machine and improve work efficiency. In the process of operation and maintenance, we must pay attention to safety to ensure personal safety and the normal operation of the machine.
I hope this knowledge will help you get more comfortable with using a gasoline chain saw.