“Chain Saw – 16” Bar, 3 Hp

142 chain saw. Starts but will not pick up when pull throttle then dies. Have changed spark plug, air and fuel filters. Suggestions
Experienced gardeners share their insights in answering this question :
Remove, clean and reinstall the muffler and spark arrestor, if no better the “L” needle may need adjustment.
Carburetor Adjustment by Madsens.com
http://www.madsens1.com/saw%20carb%20tune.htm

CW is leaner; to lean will destroy the saw. If over tightened closed (CW) the adjustment screw faces are easily marred; marred adjustments are difficult to impossible to set properly.
Clean the air filter; adjusting with a dirty filter can cause a run lean condition once cleaned and the saw run.
Clean the spark arrestor and muffler; if the saw cannot exhale it cannot inhale.
There are 2 wav (sound – idle & full – may not be highlighted) files that I find most helpful, I think you will too.
Most chainsaws die because they are are run lean. I am going to inject a little Lou theory here. Air leaks and defective fuel delivery systems account for most chainsaw failures. Constant adjustment of needle valves can easily camouflage more serious problems that result in burning up your saw.

If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
Lou

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My chain saw starts and then dies what is wrong? This could be a number of things and is most likely fuel or storage related. Over a short period of time, fuel will become stale. If the unit is stored with stale gasoline, the system will become clogged or restricted.
1. Dull chain and or improper lubrication to the bar and chain, sharpen and or clean the bars oil holes. 2. Air filter and fuel filter for restrictions and contamination, clean or replace as needed.
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.
The carburetor might be clogged. 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.
The fuel line may be clogged from stale fuel deposits, more reasons to cause your chainsaw to cut out when applying throttle. If a fuel line is cracked, it will leak gasoline and draw air from outside into the fuel line. If the line is leaking fuel, it needs to be replaced.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

Chain keeps falling off – Poulan 18" Chain Saw Replbar (small Saws)
ANSWER : Your chain is too loose. If you’re using an old chain, you might need to have a link taken out of it. You can find replacement chains for your saw at Hyperparts.com. Use the application lookup link at the top of the page with your model # to make sure you order the right chain.

Just getting started with a new RCS1835. The motor goes but the chain isn’t engaged. Is there another brake I need to release?
ANSWER : The plastic safety kick back may be engaged. 1) unplug the saw. 2) push the kick back safety ahead then pull it back ( it is the guard in front of the handle)
Now if your electric motor is turning, but the chain sproket is not, it may well be the clutch. Tap it with a small hammer, make sure it is free and not hanging up.

I was using the saw as a chain saw last weekend to cut up an old tree stump when the chain came off. I don’t know how to access it to put it back on and don’t have a user manual. The saw belonged to my late father and I don’t know if he even kept the manual.
ANSWER : You will have to remove the cover on the side the chain bar goes into. There should be one or two nuts holding the cover on the side. The is also a chain tension adjuster you may have to loosen to put it back on. Make note of the direction of the teeth on the chain. It is an directional chain. The tension adjuster is usually a flat head screw on the front side right beside the chain bar.Unless it is a really old saw, manuals are available from most manufacturers for free download. See if you can locate a brand name and model number.

SAW WONT START IT HAS FIRE TO THE PLUG AND IT WONT START WHEN I SHOOT A LITTLE ETHER IN IT
ANSWER : If the engine has good compression, and good spark, it should at least ‘pop’ several times. Check the flywheel ‘key’ as it may have sheared causing the ignition to be out of time. Hope this helps!

Poulan 4018 pp4018 – Poulan P4018 18Inch 40cc 2Cycle Gas Powered Easy Start Chain Saw With Case
ANSWER : Proper fuel mixture?

What causes the chain on my 240E to jump off the chain bar often, the chain tenson is correct.
ANSWER : Is the bar bent?try and flip it over and see if it falls off the other side if you can see a bend

18″poulan chain saw wont rev up
ANSWER : Carbs dirty need cleaning. try adding some stabil you can buy at auto zone with fresh fuel it may clean itself out w/o having to remove the carb.

Can’t keep pole saw running. It starts fine but when i go to do something it shuts down
ANSWER : It sounds to me like you have a blockage in the high jet. There are 2 jets in the carb a HI and a LOW. If you can determine which is the high jet turn it in gently while counting how many full turns and any partial turn and write it down. (example 2 and one half turns) Then remove the high jet needle valve. Spray some carb cleaner into the hole you took the needle valve out of using the little tube that comes with the can of carb cleaner. then put the needle valve back in and turn it gently till it stops again. Now turn it back out the same amount that you wrote down. It would not hurt to do the other jet as well…