Check the spark plug Another common reason a chainsaw won’t start is that the sparkplug is old, dirty, damaged or not correctly attached. If it’s only a little dirty, give it a clean – but often, since sparkplugs aren’t expensive, it’s easier just to replace it anyway.

Why do chainsaws never start?

Check the spark plug Another common reason a chainsaw won’t start is that the sparkplug is old, dirty, damaged or not correctly attached. If it’s only a little dirty, give it a clean – but often, since sparkplugs aren’t expensive, it’s easier just to replace it anyway.

Why does my Stihl chainsaw not start?

Dirty or clogged fuel tanks, dirty fuel filters and lines, loose fuel hoses, dirty air filters and a dirty carburetor can all restrict fuel flow. Check, clean and replace all the fuel system parts before moving into the internal engine, as gas problems create a majority of starting problems.

How do you start a chainsaw that has been sitting?

  1. Just let the saw sit for 30 min and the excess gas will evaporate.
  2. Remove the spark plug, dry it, crank over the engine a few times to dry the cylinder. Now refit the plug and try again.
  3. Set the switch to “On”, set throttle to fully open, set choke to “Off” and crank over the engine.

Why is it hard to start my Stihl chainsaw?

Problems starting a Stihl chain saw can be related to gasoline storage, spark plugs, and incorrect starting procedures.

Are chainsaws hard to start?

Old fuel collects moisture, making the fuel difficult to ignite. … It’s possible the engine is flooded with fuel. To clear excess fuel from the carburetor, place the choke lever in the Off position, hold the throttle trigger fully open and pull the starter rope 5 or 6 times. Try to start the chainsaw.

How do you reset an old chainsaw?

  1. Take off the gas tank lid.
  2. Put a few BBs inside the gas tank.
  3. Put on the gas tank lid.
  4. Shake chainsaw vigorously.
  5. Take off the gas tank lid.
  6. Pour out BBs and old gas.
  7. Flush out gas tank with cleaner.

Can you use starter fluid to start a chainsaw?

Another thing you can try if your chainsaw won’t start without starting fluid is replacing the air filter. If you have used starter fluid, then you know that you have to put the starter fluid into the air intake.

Do all chainsaws have spark arrestors?

Chainsaw manufacturers include a spark arrestor on every model to prevent combustion byproducts from escaping the combustion chamber during saw operation and starting a fire. … To access the spark arrestor, you’ll probably have to remove the muffler.

Where do you spray starter fluid on a chainsaw?

Removing the air filter, spraying starting fluid into the carburetor and pulling the starting rope is another quick way to clear out the engine. Starting fluid creates a leaner fuel mixture that ignites more easily, and the operation of the engine clears out the combustion chamber automatically.

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How do you start a 2 stroke chainsaw?

Place the chainsaw on flat, level ground. Make sure the bar is clear of obstacles and bystanders are at a safe distance. Engage the chain brake. Engage the safety switch and simultaneously pull the trigger switch to start the chainsaw motor.

Why won't my chainsaw start when it's hot?

When your chainsaw quits after it gets hot, you either have a problem with gas flow being restricted into the engine or with the spark. This is a common occurrence on older-model chainsaws. By replacing your spark plugs and keeping your gas lines clear you can reduce the chances of this problem recurring.

What is a chainsaw carburetor?

The carburetor on a chain saw is pretty simple, as carbs go, but it’s not entirely uncomplicated. The job of the carb is to accurately meter extremely tiny quantities of fuel and mix it with the air entering the engine so that the engine runs properly. … The carb is in charge of getting the mixture just right.

What does a clogged spark arrestor do?

Sometimes the spark arrestor screen can become clogged up itself. Common symptoms include lack of power, especially under load; poor acceleration; engine won’t come up to full RPM; and higher than normal “spit back” through the carburetor.

Is it OK to remove spark arrestor?

You can safely remove the spark arrestor or even install an aftermarket exhaust system on many ATVs without having to make alterations to your jetting because they are normally set up to run a bit rich from the factory, but this is no general rule!

What does a spark arrestor do on a chainsaw?

The spark arrestor on your chainsaw prevents dangerous hot sparks from igniting fires while you’re working. If the arrestor is clogged or dirty, however, it will also prevent exhaust from leaving the motor, which can prevent it from running.

What does a choke do on a chainsaw?

The choke position increases the richness of the air and fuel mixture the carburetor sprays into the cylinder. With the master control lever in the choke position, the flow of fuel into the engine increases and the flow of air decreases.