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Chainsaw starts ok. When I try to cut it will stop half way. When I hit throttle it the chain will move and then it slows down and stops. Any sugestions?

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Make sure the bar and chain is being properly lubricated by running the saw at speed with the tip near some cardboard--it should throw off a thin line of oil after a moment or two. If dry, remove the bar and chain (make sure the chain brake is set to off), and clean the engine area where the bar fits to it. Start the engine--oil should ooze out of the small port in the engine side. If ok, clean the small oil passages that run from the large holes (in the drive end of the bar) out to the chain groove on the bar edge. Wash out the interior of the clutch hub with spray carburetor cleaner to remove excess oil. Reassemble the bar/chain and adjust the chain until it just comes up to the lower bar, but not so tight that you can't turn the chain easily by hand. Make sure the chain is filed sharp enough to cut your fingers if not careful. Hope this helps!

Posted on Nov 11, 2010

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1 Answer

When go to cut engine is runnig but chain stops when touch the tree


Hi Pam:
Using chain saws takes a bit of getting used to, and it can be DANGEROUS.
- The chain must be sharp to be able to cut properly, and a sharp chain "bites" into the wood.
- Before you touch the chain into the wood, you have to speed up the engine. This takes some getting used to.
- Try this technique: With the chain about an inch above where you want to cut, squeeze the throttle about half way so the chain is spinning. Touch the chain to the wood and increase the engine speed as the chain starts to cut. The harder you cut, the more power you need to apply.
After a while it gets to be second nature.
Work Safe, and get an experienced friend to help with some "hands on" coaching.
Cheers.

Nov 26, 2015 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

1 Answer

Husqvarna starts but cuts out if not on full throttle


There is a screw that allows you to set the Idling. Take the top off so you can see the carb. Without starting it play with the throttle trigger you will see a shaft move in the carb, the shaft will probably have some small attachments on it. Identify the screw that acts as an "end stop" when the throttle trigger is released. Once you have found the idle screw you can start the machine and turn the screw in slightly. Set it so that the machine idles but not too fast or the cutting chain will start running.
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Sep 10, 2012 | Husqvarna Garden

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How do you remove the sprocket and clutch assembly


Article: Fixing a Broken Chainsaw

Having a broken chainsaw is an inconvenience. Having one that works when you need it is important! Chainsaws are useful tools for tree pruning, cutting firewood, and carpentry projects, but are not so useful if not properly maintained. It can also cost a great deal of money to get a broken chainsaw repaired. You can save a lot of time and money by repairing it yourself. For chainsaw repair you will need a blanket or large cloth, a chainsaw tightening tool, files to sharpen the blades, and any necessary replacement parts.

My Chainsaw's Engine Does Not Start

If the engine will start at all, you might have a bad starter switch. Check to see that all connections to the starter switch are secure. Is the power cord cut or broken? Check to make sure that you have a proper power line connection. If all checks out except for the switch, go ahead and replace it. You may want to consider whether you are using the appropriate fuel mixture.

My Chainsaw Smokes

If there is smoke coming from the chain, it could be an indication that there is not enough lubrication. Without the proper lubrication, the chain and chain bar can become seriously damaged. Make sure there is oil in the reservoir. When you start the saw, the automatic oil pump should lubricate the chain and bar. To see if this is a problem, hold the saw tip over a light-colored surface, hit the throttle and look for oil spatters on the chain bar. If you see no oil splatters, turn the saw off. Remove the chain guide bar and see if the oil discharge slots are clogged with sawdust. Clean out the sawdust and restart the saw to check lubrication again.


The Chain Skips or Jumps

If the chain skips or jumps during operation, check the engine drive sprocket to make sure it is not worn. If you have a worn sprocket it will not allow the chain to sit properly. Also, check to make sure the chain tension is set correctly. Setting the chain tension is a part of continuous operation. However, a dull or damaged chain may also cause the skipping and jumping.

My Chainsaw Isn't Cutting Properly

If the saw cuts at the wrong angle or shoots out a lot of sawdust, you probably need to sharpen the chain. A dull chain can be very dangerous. It can cause a kickback or chain jump that might break the chain and release pieces that could harm to the operator. If your chain is very shiny, you need to examine each cutter for damage. Use a file to sharpen the cutters.

The Chain Continues to Move or Stops

If the chain continues to move while the engine idles then you should check to make sure the idle is not set too high. If it stops while cutting, see if the brake is engaged.

My Chainsaw Loses Power

If the saw loses power while operating, check to make sure all electrical connections are secure. Any break in current may cause the saw to decrease in power, stall or shut down altogether.

When maintained, chainsaws are a great asset to any tool collection. Consult your user's manual for questions specific to certain manufacturer types.

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Oct 05, 2010 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Electric Chainsaw - chain stops when you try to cut!


Remove the bar and chain--check the sprocket and shaft for any mechanical damage. Try to turn the sprocket by hand in a CCW direction, does the shaft move with it? Does it seem to turn the motor? If the sprocket and shaft seem ok, then you may have a damaged gear (likely plastic) within the gearbox. Hope this helps!

Jul 09, 2010 | Black & Decker Garden

1 Answer

My Stihl 028WB chainsaw will start and run a little, will cut for a short time but then the chain slows down and no matter if I hold the throttle wide open it will not cut fast and basically won't cut. The...


Check the engine running (it should 4-stroke at speed when not cutting, but will immediately 2-stroke when cutting) after removing the bar and chain. If the engine seems ok now, check that oil is oozing out of the engine side port. If ok, clean the oil ports at the drive end of the bar including the two small ports that go out to the chain groove on each side, then clean the entire chain groove. Oil the end sprocket (if it exists) and check it's turning. Reinstall the bar and chain, and adjust the chain until it just stops drooping from the lower bar, but not so tight that it can't be turned by hand. If no oil came out of the engine port in the first test, then troubleshoot the oil pumping system from the oil tank filter to the oil pump itself. The chain should cut at any running speed, just not as fast. Make sure that it is properly sharpened. Clean the air cleaner and the muffler if either is plugged. If you have further problems, suggest taking the machine to a Stihl repair center for carburetor service if needed. Hope this helps!

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1 Answer

While cutting the chainsaw bogs down and stops


Check the air filter and the muffler if either are plugged up it will not run smooth. Carb hi and low screws are very sensitive so if you change them, only move them a little at a time.

Jan 02, 2010 | Husqvarna , No.455 Rancher, 20" Gas -...

2 Answers

Chainsaw blade turns constantly, even when idling.


If the chain turns on the bar when the saw is at idle, then the idling speed is still too fast. If you turn the idle screw down until the chain stops moving, it should still idle well enough not to stall. The chain should not move at idle.

If you turn the idle screw down until the chain stops and it won't idle, then you have to adjust the low speed carb screw. Odds are if you back off the idling speed until the chain stops moving you'll be fine. The idle screw is usually the one with a spring under it to maintain torsion. Somes the throttle plate, the one with the throttle wire against it, will rest against a screw stop for idle control. This is the easiest adjustment. Just back it out until the plate returns more and the speed will drop.

Make sure it is lubricated and not clogged up with sawdust.

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1 Answer

The second hand McCulloch 120 chainsaw I purchased


I think the pre-adjust settings are to turn jets in all the way and back out 1.5 turns each. then:

You will find a Low and High adjustment screw. At idle turn the screw in or clockwise until the rps starts to decrease. Then start turning it out till you hit max idle rpms. Turn screw back in a quarter to half turn and it should be idling smoothly. Be careful here and get someone to hold saw if necessary but hold in throttle to full speed and do the same with high adjustment screw. turn it in till rpm starts to drop then back it out until you get to max rpm and it won't go any higher then turn it back in a half a turn.

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