Top 19 Chainsaw Frequent Causes! – How to Fix ?

It’s important that your chainsaw is in good condition so that cutting can be done quickly and safely. Maintain your chainsaw regularly. Chainsaws can be dangerous tools if not correctly set up, used, and maintained.

Engine Problems

No matter how best chainsaw, there is always the possibility of a problem.One of the most common problems faced by most chainsaw users is how to solve chainsaw cann’t start.In this comprehensive guide, we look at the different problem and tricks when your chainsaw fails to start. These tips and tricks come from t operating principle how the chainsaw works. This will helps you to identify components which parts not functioning properly. Once a bad component gets know, you can repair it to restore functionality.

Gas chainsaw  cann’t start

1.Spark Plugs

The spark plug ignites the air-fuel mixture which then burns in the combustion chamber. The electric spark occurs when an electric current jumps across the spark plug gap.You need check out the plug spark arrestor screen. If the spark plug is faulty ,you should replace it.

2.Fuel Issues

Fuel problem can prevent gas chainsaw engine from starting. Frist,you should make sure that there is enough fuel in the fuel tank. If you leave the fuel in the fuel tank for a long time, it possible out of work. Some of flammable components will evaporate,the ratio has changed. When this happens, the chainsaw cann’t start at all.

3.Fuel Filters

Clogged oil fuel filter can prevent the fuel pass,the chainsaw engine will not start. You should clean or change the fuel filter often. Without a fuel filter will allow dirt to get into the fuel passages of the carburetor.

4.Recoil Starter

The recoil starter has three main components: the magneto,the starter recoil pulley, and the rewind spring. The pulley assembly and the recoil spring is the most susceptible to fail.


The carburetor mix the fuel with air before delivering it to the engine cylinder’s combustion chamber. If the carburetor fuel passages are blocked, then it will fail to woek. That means it will not deliver the right air-fuel mixture ratios to engine and the chainsaw not to start.You can clean the carburetor passages and ensure not clogged. If carburetor is bad, you should replacing it.

Chainsaw poor performance

6. Hard starts.

Check the chainsaw’s fuel system, air intake or spark system.

7.No turnover.

Engine has been abused, the chainsaw probably  hasn’t been used very often or the engine has been abused. you will need to seek out a mechanic to perform a major repair.

8.Chainsaw leak oil

The oil tank vent be blocked or lubrication system is bad.To assure that this problem never occurs, always lubricate the engine of your chainsaw as prescribed by the chainsaw’s owner’s manual. Never allow a chainsaw engine to run dry.

9. Poor engine performance,

regular maintenance schedule and replace worn out parts or adjustments to the idle speed or the fuel ratio on the carburetor.

10.Chainsaw overheat

both the air filter and spark arrester,wrong fuel, electric chainsaw possible are using an extension cord or an incorrect gauge

11.Engine oil and fuel mix

Mixing too much oil with the petrol will cause the following problems:engine will smoke a lot.、hard to start、less power、the spark plug to fail (not start). Each saw has a specific ratio of fuel to oil that is depend on engine lubrication The rato of fuel is very important to get this mix right.

12.Dealing with a flooded Engine

Engine flooding prevents the spark and ignition of the engine.It happens when petrol is in the compression chamber before it ignites. It must emptying out the chamber of fuel before the engine will start.

Chain Problem and other issues

Chain problem

Looking at the top of the bar, the teeth should look like this image, with the saw being to the left side and the bar tip to the right.

If your saw is not cutting properly unless it is forced, or is cutting wood into fine saw dust, the chain is a dull cutting chain. A dull chain can cause wear to the engine, clutch and various other components in the chainsaw because the saw need to work harder for the dullness of the chain.

13.5 signs of a dull saw chain

  • The saw chain does not pull itself into the wood.unless be forced to cut by applying pressure.
  • Split cut or a cross cut (making a vertical cut) the chainsaw creates fine sawdust instead  coarse strands.
  • chain lubrication is ok and chain tension is right but also smoke crops up.
  • dull cutting teeth on one side or uneven cutting teeth lengths can cause the chainsaw runs in one direction conreat a crooked cut.
  • The chainsaw difficult to achieve precise positioning and make a noise “rattles” and “bounces” .

14.Chainsaw cutting crooked or at an angle.

The teeth are improperly filed or wrong angle filed, or every tooth filed the amount or pressure are different.Tening the bar or the sprocket at the far end of the bar are in poor condition and need maintenance or straigh

16.Chainsaw cutting is overheating

Lack the bar oil,or have a backslope on the teeth

17. Chain jumping off the bar

Chain tension is wrong.

Other issues

18.Lose cutting accuracy and efficiency

Most guide bars wears in two places: On top side of the bar rails and on the surfaces inside the rails.

19.Clutch problem.

If the clutch pads are worn out, they will not exert enough pressure on the clutch drum and the chainsaw won’t cut properly.

Tips on Basic Chainsaw Maintenance

The following are some measures you should take to extend the lifespan of your chainsaw and keep it working in perfect condition:

  • Properly lubricate the bar and chain.
  • Clean the chain break regularly.
  • Clean the air intake slots and remove all debris.
  • Rotate the bar if it starts wearing.
  • Make sure the cords on corded chainsaws aren’t damaged.
  • If the chain loses edge, replace it rather than trying to sharpen it.
  • If your chainsaw starts vibrating excessively, check that all screws are tightly in place.

Here are some general care and maintenance tips for used a long time you can follow:

1.Clean the sprocket nose, air circulation ,oil inlet hole , oil the bar groove , Saw body, air intake vents and cooling fins . Check the spark plug . Try replacing the spark plug if this is bad.

2.Test the Trigger

3.Rotate the guide bar and remove burrs from the  bar.

4.Tighten & Sharpen Chain: Inspect the drive sprocket for wear. Sharpen your chain, inspect its condition, and replace it if damaged. Check the chain tension to make sure it’s not too loose, and tighten it if necessary.

5.Tighten Any Loose Parts: Check the screws, nuts, or bolts or other easy loose parts before each use and tighten them.

6.Check Chain brake:

Make sure the chain brake is functioning properly by following these steps:Put the chainsaw on a stable surface.Release the chain brake and squeeze the throttle.Then activate the chain brake by pushing your left wrist against the kick back. If the brake band breaks, you’ll must to replace it.

7.Check the Anti-Vibration Wear & Tear and the bar sure they’re work well condition . Lube the Clutch to prolong the life and performance of your clutch

8.Clean Your Tanks:

Cleaning old gasoline residue that’s good for your engine.

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