How to diagnose a chainsaw problem and choose the best chainsaw parts for repair

It is a holiday, instead of going out you have decided to deal with an overgrown tree in your compound which is affecting your environment.

It is has been long since you used the Chainsaw but the last time you used it did an excellent job. So immediately you rush to your store room to pick it ready for the work ahead.

After carrying your instrument to the workplace, you turn it on, only to detect that your chainsaw is not starting.

After checking out, you realize that it has some parts are worn out and need replacement.

Below article has sampled out the causes which may be making your machine not to start.

Some it will require you to do and others you will need an attendant to fix them for you.

1. CHAINSAW NOT STARTING.

There are different causes that may make Chainsaw not to start.

Spark plug-This is a device that produces sparks that ignite fuel/air into the combustion chamber which causes explosion into the drive and causes the engine to work. The spark plug may be damaged or not working. Remove it and assemble it. Check if the electrode is burned or damaged also check if the porcelain insulator is cracked. If they are damaged, replace them.

Carburetor-This is a device used for adjusting and turning on the chainsaw. Sometimes the carburetor may be clogged. This may be caused by leaving the chainsaw with oil for a long period of time. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the carburetor hence making the machine not to start. Use a carburetor cleaner to clean the clogged carburetor and if after cleaning it is not starting the carburetor may be damaged, you will be needed to replace it.

Carburetor repair kit– Sometimes the carburetor may be clogged. This may be caused by leaving the chainsaw with oil for a long period of time. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the carburetor hence making the machine not to start. Use a carburetor cleaner to clean the clogged carburetor and if after cleaning it is not starting the carburetor may be damaged, you will be needed to replace it.

Rewind spring-Rewind spring recoils the starter rope into the pulley when the starter rope is pulled and released. If the rewind spring is broken it will be difficult for the starter rope to recoil into the pulley. This may cause the engine to be unable to start. Remove it and replace it.

Recoil starter-Recoil starter assembly is used together with the crankshaft to turn the engine. If the recoil starter is not working it will not turn the engine hence the chainsaw won’t start. To enable the machine to start to remove the defective recoil starter assembly, inspect it by checking if after pulling the start rope tabs extending from the pulley and cam are grabbing the hub on the engine, causing the engine to turn. After release, the tabs should retract and the rope rewind back to the pulley. If this is not happening to replace the entire recoil starter assembly.

Recoil starter pulley-it is used to retract the starter rope when the rope is not in use. If it is damaged it will make the starter rope not to retract hence causing the engine not to start. Replace the recoil starter pulley for easiness.

Ignition coil-This is used to send voltage to the spark plug when the engine is on. If it is damaged it will cause the engine not to start. Before replacing the ignition coil first check if the spark plug is working. After that test the ignition coil with an ignition tester to determine if it is well. If damaged replace it.

2. CHAINSAW STALLING OF THE AFTER STARTING

Immediately you are done fixing the parts that were making the engine not to start, you are set to go but unfortunately you realize that after starting, the machine is stalling.

This may be caused by a variety of parts not working:-

Spark arrestor-This is a small screen that prevents the engine from producing sparks. Sometimes it may be clogged with soot. If after checking you find that it is clogged, and the chainsaw is running roughly or stalling, remove it; clean it with a wire brush to unclog it. Also you can replace the spark arrestor for effectiveness.

Carburetor-This is a device used for adjusting and turning on the chainsaw. Sometimes the carburetor may be clogged. This may be caused by leaving the chainsaw with oil for a long period of time. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the carburetor hence making the machine to stall. Use a carburetor cleaner to clean the clogged carburetor and if after cleaning it is not working the carburetor may be damaged, you will be needed to replace it.

Carburetor repair kit- This is a device used for adjusting and turning on the chainsaw. Sometimes the carburetor may be clogged. This may be caused by leaving the chainsaw with oil for a long period of time. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the carburetor hence making the machine to stall. Use a carburetor cleaner to clean the clogged carburetor and if after cleaning it is not working the carburetor may be damaged, you will be needed to replace it.

Fuel filter-When fuel is left in the chainsaw for a long time it may cause the fuel filter to clog. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the fuel filter hence making the machine to stall. Remove all the old fuel left in the fuel tank and replace the fuel filter.

Air filter-If the air filter is clogged or dirty it will cause the engine to get too much fuel but not enough air. This will cause the engine to stall or run roughly. Replace the clogged air filter.

3. CHAINSAW RUNNING ROUGH .

After dealing with the stalling issue, you may get amazed by the engine running roughly.

This is mainly caused by:-

Carburetor-This is a device used for adjusting and turning on the chainsaw. Sometimes the carburetor may be clogged. This may be caused by leaving the chainsaw with oil for a long period of time. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the carburetor hence making the machine the clogged carburetor and if after cleaning it is making it run roughly the carburetor may be damaged, you will be needed to replace it.

Air filter-If the air filter is clogged or dirty it will cause the engine to get too much fuel but not enough air. This will cause the engine to stall or run roughly. Replace the clogged air filter.

Fuel filter-When fuel is left in the chainsaw for a long time it may cause the fuel filter to clog. Also a thick, sticker substance may be found since some ingredients of the oil might have evaporated. This sticky substance will clog the fuel filter hence making the machine to stall or run roughly. Remove all the old fuel left in the fuel tank and replace the fuel filter.

Foam filter-If after inspection you will find the filter clogged or dirty, remove and replace it to avoid the engine running roughly.

Spark arrestor-This is a small screen that prevents the engine from producing sparks. Sometimes it may be clogged with soot. If after checking you find that it is clogged, and the chainsaw is running roughly or stalling, remove it; clean it with a wire brush to unclog it. Also you can replace the spark arrestor for effectiveness.

4. CHAINSAW CHAIN NOT TURNING

After making sure the chainsaw is not running roughly and you are now ready to start, after running the start rope you realize that the chain is not turning.

This may be caused by:-

Clutch-Clutch pads usually engages clutch drum to allow chain rotation. If they are worn out they will not engage the clutch drum although the motor will run. This will cause the chain not to turn. Also check if the stop lever is disengaged because if it is engaged the chain will not turn.

Replace the clutch pad assembly if it is worn out.

Clutch pad kit– Clutch pads usually engages clutch drum to allow chain rotation. If they are worn out they will not engage the clutch drum although the motor will run. This will cause the chain not to turn. Also check if the stop lever is disengaged because if it is engaged the chain will not turn. Replace the clutch pad assembly if it is worn out.

Drum brake- Clutch pads usually engages clutch drum to allow chain rotation. If they are worn out they will not engage the clutch drum although the motor will run. This will cause the chain not to turn. Also check if the stop lever is disengaged because if it is engaged the chain will not turn. Replace the clutch pad assembly if it is worn out.

5. CHAINSAW CHAIN NOT STOPPING

This may be hectic but for better results check what is making the chain to run continuously.

This also may be caused by:-

Clutch-Chain rotates after the clutch pad engages the clutch drum. When the engine slows, the return springs retract the pads to disengage the chain. Broken springs will cause the clutch pads not to retract hence preventing the chain from stopping. If clutch pads are sticky, the clutch drum will be engaged hence making it continue running. If springs are broken and clutch pads sticky replace the whole clutch assembly.

6. CHAINSAW NOT CUTTING

Having the chain running well now you are ready to have your duty done.

When you start the chainsaw and it has started running, you may realize that it is not cutting.

Possibly this may be caused by:-

Cutting chain-A chain that is dull or blunt may cause the chainsaw not to cut. Remove it, sharpen or replace it.

The chain is improperly adjusted-If the adjustment screws are loose, it may make the chain to have good conduct with the item to be cut. If it is tight the chain will not rotate properly hence making the chain not to cut well. To adjust it tighten or loosen the adjustment screws for it to cut.

Adjustment screws– If the adjustment screws are loose, it may make the chain to have good conduct with the item to be cut. If it is tight the chain will not rotate properly hence making the chain not to cut well. To adjust it tighten or loosen the adjustment screws for it to cut.

Clutch-Clutch pads usually engages clutch drum to allow chain rotation. If they are worn out they will not engage the clutch drum although the motor will run and it will not exert enough pressure, this will cause the chain not to cut properly. Replace the clutch pad assembly if it is worn out.

Clutch pad kit– the clutch band is a steel band that wraps around the clutch drum and is activated by the emergency stop lever. If the emergency stop lever is engaged, it will prevent the chain from reaching full speed and cause the chain not to cut. Adjust it for proper cutting.

Chain bar-Chain should slide easily and properly around the chain bar. Sometimes it may be bend or worn out. Chain oil lubricates the chain bar that is fed from the reservoir. Ensure the reservoir is filled with chain oil for lubrication and to make the chain cut.

For safety always make sure your machine is safe, working well and maintained well to avoid failures.

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