If your chainsaw has been in storage, the fuel may need to be replaced. When gasoline is left standing in the fuel lines and carburetor, it partially evaporates, leaving behind a varnish-like substance that clogs the fuel system. The fuel may also have moisture in it, and the moisture mixes with ethanol in the gasoline and settles at the bottom of the tank, which is where the fuel line is located.
The primary reason that is why your chainsaw won’t stay running is the faulty carb. In your chainsaw, there is an idle port which is responsible to keep your chainsaw in idle position. Thus, the port will apply force to make your chainsaw stay running.
Try to relax and read our guide to possibly find the reason why your chainsaw won’t stay running. If the idle port of your chainsaw gets blocked or damaged, your chainsaw won’t stay running. If you have more chainsaw questions, here at Canberra Diamond Blade, we are happy to help! In the meantime, check out our other chainsaw articles answering questions like if it’s worth sharpening a chainsaw chain.
why does my chainsaw run then stop Related Question:
Why does my chainsaw stop running after a few minutes?
Re: chainsaw shuts down after a few minutes Sounds like a fuel supply issue. Fuel line, fuel filter, carb diaphragms, impulse hose, plugged carb screen, bad fuel, etc.
Why does my chainsaw keep stopping?
When your chainsaw starts fine but then stops, the reason is often that the engine does not receive the correct fuel-air mixture. The most common reasons for this are a blockage in fuel lines, a clogged or faulty carburetor, a dirty air filter, or a faulty spark plug.
Why does my chainsaw cut out after starting?
If your chainsaw stalls instead of producing the reassuringly high-pitched sound of a healthy engine when you press the throttle trigger, something is interfering with efficient fuel combustion. The problem could be a lack of air or a misfiring spark plug, and both of these problems are easy to check and remedy.
Why does my chainsaw turn off after 15 minutes?
The most common problems why a chainsaw does not stay running are: Spark Switch/Plugs. Bad Fuel. Blocked Carburetor.
Why does my chainsaw stall out when idling?
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.
Can you clean a chainsaw carburetor without taking it apart?
To clean a carb, you have to take it apart. If it needs cleaning, the parts that need cleaning can’t be seen from the outside.
How do you clean a carburetor without removing it?
To clean a motorcycle carburetor without removing it, you’ll need to remove the bowls at the bottom of the carburetor. Once the bowls are removed, spray some carburetor cleaner up inside, wait a few minutes, then spray again to ensure coverage. Then replace the bowls and start the motorcycle to assess how it runs.
Why does my chainsaw shut off when I give it gas?
If the filter becomes clogged, not enough fuel will reach the engine for it to run properly. Because your chainsaw will idle, but dies when it is revved up to full power, it means that the filter is only partially clogged; it will allow enough fuel to the engine to run on idle, but not enough to sustain full throttle.
How do you start a stubborn chainsaw?
Try to start the chainsaw after priming the carburetor. 5. Activate the choke by moving the lever to the full choke position and pull the starter rope 3 or 4 times to start the engine. If that doesn’t work, move the choke lever to half choke and pull the starter rope, 6 times maximum, to start the engine.
How do I know if my chainsaw spark plug is bad?
If it’s not producing any sparks at all, your chainsaw needs a new plug. If there are only a few sparks coming out of one side of the electrodes but none on the other side, it’s not bad enough for you to worry about, but it will affect your performance.
Can you spray carb cleaner in chainsaw?
You can use Sea Foam Spray to clean your chainsaw carburetor effectively. Sea Foam spray has a petroleum cleansing solvency. And adds lubricity to various components of the carburetor. It is a fine cleaning agent for chainsaw carburetors.
Is Sea Foam safe for chainsaws?
At Sea Foam, we recommend overcoming saw starting issues by adding 2–4 ounces of Sea Foam Motor Treatment to a low tank of fuel, running it for about five minutes, then letting it sit a night or two to soak or clean. Add fresh fuel and proper two-stroke oil before operating and it’ll be good to go.
Will Sea Foam clean a carburetor?
Use Sea Foam Spray to safely and effectively clean residues and deposits from intake valves, chambers and compression rings! Sea Foam Spray delivers a high concentration of petroleum cleaning solvency and lubricity to carburetor throttle valves, intake runners and valves, and chamber areas.