Table of Contents
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.
Why does my Husqvarna chainsaw keep stalling?
A clogged carburetor is often caused by leaving fuel in the chainsaw for a long period of time. Over time, some of the ingredients in the fuel may evaporate, leaving behind a thicker, stickier substance. This sticky fuel can clog up the carburetor and cause the chainsaw engine to stall.
Why does my Husqvarna chainsaw bog down when I give it gas?
If your chainsaw is bogging down when you give it throttle, this is often a sign of improper gas-to-oil ratio. If there is too much gasoline in relation to the amount of oil used, this is known as a “rich mixture” and can cause the chainsaw to run poorly.
What causes a chainsaw to vapor lock?
Vapor lock occurs when the fuel (usually gasoline) within the fuel delivery system overheats and vaporizes too rapidly. Consider allowing the chainsaw to cool down for 10 to 15 minutes until vapor pressure has subsided and saw will start without removing gas cap.
Why does my chainsaw cut out when 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.
Why does my chainsaw stall when I give it gas?
Carburetor Adjustment An engine stalls when it’s getting too much or not enough fuel from the carburetor. Stihl chainsaw carburetors usually have three adjustment screws: one each for idle, low speed and high speed. If the saw stalls while it’s idling, adjusting the idle screw, which usually is marked LA, should help.
Why does my chainsaw dies when I turn it sideways?
Because the fuel covers the jets. When the bar points down or the saw is held sideways the jets no longer have fuel to cover them, it is air. The saw then runs lean and dies.
How do you adjust the carburetor on a Husqvarna chainsaw?
The carburetor has been correctly adjusted when the saw accelerates without hesitation, and it idles smoothly. Adjust the idle high-speed screw “H” to increase or decrease the power of the saw. Turning it clockwise increases power, and counterclockwise decreases power. Don’t set it too high or it can damage the engine.
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.
How do you troubleshoot a Husqvarna chainsaw?
10 Basic Checks Pull the starter rope to see if the engine turns over and if compression is adequate. Check fuel for quality and correct mix – recommend replacing with a known mix. Check the fuel filter for blockage. Check fuel supply pickup and hose for blockage or cracking from age. Check the air filter for blockage.
How do you start a chainsaw after sitting?
So how can you fix it? Just let the saw sit for 30 min and the excess gas will evaporate. Remove the spark plug, dry it, crank over the engine a few times to dry the cylinder. Now refit the plug and try again. Set the switch to “On”, set throttle to fully open, set choke to “Off” and crank over the engine.
What are signs of vapor lock?
Vapor lock causes: Loss of fuel pressure (and flow) Loss of power. Stalling. Difficulty restarting the engine.
Do you start a chainsaw with the brake on?
When engaged, the chain brake stops the chain from rotating around the saw’s guide bar. When using a chainsaw, you should always start it with the chain brake engaged so the chain does not move.
Why will my chainsaw not start?
The chainsaw’s engine is flooded with fuel. A fuel issue is one of the most common reasons why a chainsaw won’t start. If you believe fuel has flooded the chainsaw engine, pull the starter cord several times while holding the throttle, dry and replace the spark plug, and then try starting the chainsaw again.
How do I know if my chainsaw spark plug is bad?
What Does a Bad Spark Plug Look Like and What Makes It Look That Way? Black, chunky carbon buildup spanning the gap between the sparking end of the plug and the hook-shaped metal piece overhanging the end. Dark carbon residue built up on the ends but not spanning the gap.
Can you clean a chainsaw fuel filter?
Brush the air filter gently with a soft brush or wash it in warm soapy water then dry it. Do not use compressed air to clean it – compressed air can blow holes in the filter, allowing dust and debris into your carburetor.
How do you tell when a chainsaw chain is worn out?
There are several signs that show if your chainsaw chain is worn out: The Chain Comes Off the Bar easily. There is smoke. Some teeth are missing. The chainsaw chain is chipped. A lot of rust. You cannot cut through wood as well as you would have expected. The Chainsaw Has a Shaky Performance.
What does L and H mean on a carburetor?
They are typically labeled L (low speed jet), H (high speed jet), and I (idler jet).
