It runs and it appears that the mechanism inside the shaft is turning, but the sprocket that turns the chain does not spin. I can turn it by hand, but it is not spinning when the engine is running
Experienced gardeners share their insights in answering this question :
Remove the entire cutting head from the pole and stick a screwdriver in the end and try to turn it to see what happens. if you can turn it, but the chain still won’t move, obviously you have stripped gears. if you rotate the screwdriver and the mechanism performs correctly, reinstall it, and remove the shaft from the powerhead and try to turn the clutch drum with the screwdriver, as well as spin the pole shaft with some pliers. You should now be able to determine where the problem is. Once you do, post a response and I will help narrow down the issue and get you a part number(s).

How to Identify and Fix Common Gardening Problems ?

We provide a variety of viewpoints on how to identify and fix common gardening problems. Our sources include academic articles, blog posts, and personal essays from experienced gardeners :

The chain tension may be too tight.

Easy fix, just loosen the bar-retaining nuts and rotate the tensioning screw counterclockwise to the correct tension. Then tighten the nuts back up.

STIHL chainsaws come equipped with a STIHL Quickstop® chain brake designed to reduce the risk of injury in certain kickback situations.
A failed power supply, broken on/off switch, bad motor overload, broken power cord or failed drive motor can prevent the table saw motor from starting. First, try resetting the overload. If the table saw motor won`t start after resetting the overload, then the saw may not be getting power from the electrical outlet.
There are a number of things that can cause the chain to stiffen up. Some of them are a result of bad choices in saw/bar/chain/sprocket combinations. Some are maintenance and lubrication issues. Some of them are just down to how the saw is used for cutting by the individual carver.
The chainsaw chain should feel snug but still pull freely.
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.
A slow-cutting chainsaw is a sign that you might need to sharpen or replace your chain.
A slow-cutting chainsaw is a sign that you might need to sharpen or replace your chain.
Be aware of the effects of gravity on the wood you are cutting. Gravity will cause a log to bend when it`s cut, resulting in compression and tension. Compression can lead to binding of the saw and tension can cause the wood to spring out when released.

Discover Relevant Questions and Answers for Your Specific Issue

the most relevant questions and answers related to your specific issue

My Z5426 won’t start. When I pull out the choke and turn the key, gas starts leaking out of the exhaust system just before it gets to the muffler. Last time it did start, it ran really rough. So, I turn off the engine and then tried to restart and that’s when I noticed the fuel leak.
ANSWER : Maybe bad fuel, fuel line leaking, flooding of the carburetor, since it did start and ran rough I am assuming that the gas was left set and more then likely this gummed up the carburetor, you will have to clean/rebuild it. If you have a can of carburetor clean you may be able to spray that into there and clean it up, I would not choke it to start it as it sounds like it got/is flooded/ing. Good Luck Tim

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I have a new Husqvarna chain saw and when it is turn on its side it dies whats wrong.
ANSWER : Its hard to say what is causeing this, there will always be a slight difference in rpm as it moves from side to side, the fuel hose should move in the tank and follow the fuel, if the machine is idling to low it may stop as you turn it, make sure the fuel hose is not trapped in the tank.

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Chain saw chain is loose
ANSWER : Loosen the side cover nuts, then turn the adjuster CW to bring the chain up to the lower edge of the bar, then check to see if the chain will move fairly easily by hand. Tighten the clamp nuts and recheck tension. If chain seems to get loose quickly again, it may not be sharpened correctly causing heat to build in the chain. You should see no reflection of light from the cutting edges if filed correctly and the saw should require very little pressure for it to cut rapidly. Hope this helps!

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ANSWER : Sounds like you have a blocked oil pump. With the flow regulator fully open and no cage filter on the end of the oil intake hose its probably pulled through dirt and blocked the pump.

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Chainsaw chain sprocket won,t turn – Ryobi Factory Reconditioned 18" 40cc 2-Cycle Gas Powered Chain Saw #ZRRY10532
ANSWER : This seems to be a chain brake that’s applied , try turning off chain brake by pulling back on hand guard till a click is felt

some folks moving up from an older saw to a more modern saw are not so familiar with chain brakes and don’t understand them and how they work

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Mower won’t start
ANSWER : This may sound stupid but don’t mean it to…
Have you tried with the choke all the way open? Do you have an automatic cruise? Is the right (correct) pedal being pushed in? These will affect if it starts or not. Also if your drive belt or one of the other belts not being tight enough will affect if it starts or just turns over. Not too many things can stope it from starting with new/good battery AND if its getting gas. Try cleaning your gas line and obviously making sure there is no obstruction around or near your blade, if it does start with blade engaged that is :))
If it doesn’t start with blade engaged, well make sure it’s in neutral. Mine won’t start in reverse but will in forward or neutral.

Hope it helps.


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Motor runs, but chain does not move – Remington Electric Chain Saw
ANSWER : Check to see if the chain is on the sprocket to do this you will probably have to remove the side cover on the saw if chain is on sprocket and still will not move then you may have a sheared key in the key way if this saw has one, if it does you should be able to see the key way on the end of the shaft coming out of the motor. there should be a nut that holds the sprocket in place if that nut is loose and the shaft is splined instead of having a key way the the sprocket could slip while the motor is turning.

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I need the carb. setting for a Poulan chainsaw #3400
ANSWER : Check screen inside carb may b clogged, linkage side, if ok carb settings, 1/4 turn but no more than half turn.

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