Question about Husqvarna 450 e-series 18" Chain Saw

2 Answers

Chain keeps coming off

Chain comes off although tightened, make sure properly oiled, etc. Bought new last year and only used a couple times

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When the chain derails at speed burrs are often created on the drive links and it no longer fits the bar groove, this is the easiest method I found for removal. Keeping the chain preperly tensioned is the only way to prevent them.
http://www.fixya.com/support/r4146814-chainsaw_chain_installation

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

Posted on May 07, 2010

  • dontbother10
    dontbother10 May 07, 2010

    Look at the lower center of the bar, any spacing between the bar and chain is to slack.

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  • Master
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You may have a faulty blade (the bit the chain runs on) some wear quickly and badly.when set up incorrectly Also they need to be positioned correctly to stop the chain coming off Make sure when applying that you push the blade upwards when you tighten,then adjust the tension screw to complete the setup.
please rate my help++++Thanks for using FIXYA

Posted on May 07, 2010

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Related Questions:

1 Answer

2 of my electric makita chainsaws have dime tip carving bars. chains keep coming extremely loose after only a few cuts. I spent as much time tightening the chains as carving.


chains that come loose that fast , and is not a cause of a weak bar bolt slipping , for sure is caused by improper oiling of chain and its overheating , heat makes metal expand so chain goes slack if it gets hot

Jan 11, 2016 | Makita Garden

1 Answer

Chain coming loose


Yes. Loosen the two nuts on the back wheel. When they are loose just pull the wheel back until the chain is tight enough and tighten nuts while holding the tire in the proper position at the proper tightness of the chain. Make sure that the tire is running true when tightened.

Jun 24, 2012 | Dynacraft Cycling

1 Answer

My chainsaw throws the chain off every couple of cuts wont stay on


Release the chain brake, then remove the bar and chain. Lay the chain out on a flat surface and look for damaged links, or sideways bending of the chain. Replace the chain if you find any such damage. Clean the engine surface where the bar fits to, then start the engine--oil should ooze out of the small port there. If ok, then clean the small oil passages that run from the large holes out to the chain groove on each edge of the bar. Re-assemble the bar and new chain (if required)--tighten the chain adjuster until the chain just comes up to the lower bar, but not so tight that you can't turn the chain by hand. Tighten the bar mounting hardware and recheck the chain tension again. The chain teeth must be properly sharpened at a consistent angle to assure rapid cutting which keeps the chain heat down. With a new chain, recheck the tension every so often as the chain will initially stretch when used. Test the chain oiling by running the bar tip near some cardboard at speed for a moment or so--it should throw off a thin line of oil. There should be an oil-volume adjustment screw on the engine to achieve this. Check the sawdust coming from the cut--it should be small chips and curls if the teeth are sharp, but it will be a fine dust if they become dull. Hope this helps!

Jan 22, 2011 | Poulan Pro Chain Saw 46cc 20"

1 Answer

The chain keeps coming loose. I tighten it up and in just a few minutes it's loose again. What am I missing?


Make sure the bar/chain is being properly lubricated by running the tip at speed near some cardboard for a moment or two. It should throw off a thin line of oil. After adjusting the chain, make sure you can turn the chain by hand after tightening the bar clamp fasteners. You can judge whether the chain teeth are properly sharpened by examining the sawdust coming from the cut--if large chips, ok. If a fine dust-like material, the chain teeth need sharpening. Hope this helps!

Jan 15, 2011 | Homelite Garden

1 Answer

Although battery is charged the chainsaw seems to have no torque to cut anything. Just had a new motor as last one burnt out. Any ideas? Could the batteries be poor although they are ok with hammer drill.


You need to check the voltage at the motor connections when running. Make sure the chain is not overly tight--you should be able to move it by hand, and that it is well oiled at all times. The battery seems to be ok if it runs a companion tool. Make sure the chain is properly sharpened. Hope this helps!

Sep 13, 2010 | Black & Decker CCS818 Chain Saw

1 Answer

Chain keeps coming off


Lay the chain out on a table or bench and check for bent/broken links, broken teeth, or damaged drive teeth. Inspect the bar for any damage and clean the small oil passages in the drive end. Inspect the drive sprocket for any tooth damage. Run the motor without the bar and chain for a few moments. Oil should ooze out of the small port in the motor case where the bar fits. If nothing, inspect the oil pump and lines. If oils ok, then reassemble the chain and bar making sure the bottom run of teeth cut toward you. Assemble the cover and mounting nuts finger tight. Tighten the chain up to the lower bar, but not so tight that it can't be turned by hand. Tighten the mounting nuts and recheck tension. Make sure the chain is properly sharpened as a dull chain will quickly loosen due to excess heat when cutting. Check the chain oiling by running the bar tip near some cardboard for a few moments--it should throw off a thin line of oil. Hope this helps!

Jun 24, 2010 | Black & Decker CCS818 Chain Saw

1 Answer

Tightening the chain


Fuel ratio is 40:1 using modern chain saw oil--not any petroleum base oil like boat motor oil. Be sure to premix fuel and oil in it's own container and to shake vigorously just before filling the saw each time. To remove the chain, loosen the chain adjustment screw several turns CCW, release the chain brake, and remove the side nuts that hold the rear chain cover. The cover will just pull off, then the bar can be pulled rearward somewhat and the chain worked off of the bar. Remove the bar by pulling it outward. Clean the entire area where the bar and chain fit to the engine, then clean the bar oil ports that run from the larger holes out to the chain groove on each side of the bar. Start the engine with bar/chain removed--oil should ooze out of the side port where the bar fits to. If ok, and the chain appears to be relatively unworn, refit everything in the reverse order of removal, making sure that the chain teeth cut toward you on the bottom run, and the chain adjustment tang drops into one of the large oil holes when replacing the cover. Tighten the mounting nuts only finger tight, and adjust the chain screw CW until the chain ceases to droop from the lower side of the bar, yet not so tight that it can't be turned by hand. Tighten the mounting nuts firmly and recheck the chain tension. If ok, and the engine runs well, start the machine and hold the bar tip near some cardboard while running at speed for several moments--it should throw off a thin line of oil onto the cardboard. Use common chain/bar oil available from home centers, hardware stores and saw dealers. Make sure the chain is properly file sharpened. Hope this helps!

Jun 05, 2010 | McCulloch 16 Inch Gas Chain Saw MCC1635AK

1 Answer

Chain keeps losening up


Is the chain being properly oiled as it runs? Check by running the tip of the bar at speed near a piece of cardboard for several moments--it should throw off a thin line of oil onto the cardboard. If nothing, remove the bar and chain, start the engine and observe the oil port in the side of the engine case. At speed, it should ooze out oil. If so, clean the bar drive-end holes that feed oil to the chain. Pay particular attention to the two small holes that run from the large holes out to the chain groove. If nothing comes out of the engine port, then an inspection of the pump, lines, and tank filter are in order. Make sure the chain is properly sharpened as a dull chain makes a lot of heat which allows the chain to stretch. You should not have to apply high force to the saw to get it to cut. Set chain tension so that the chain does not droop from the bar bottom, but turns easily by hand. Hope this helps!

Apr 09, 2010 | Poulan ES350 16" Chain Saw

1 Answer

How to replace chainpoulan pro 18"


First lay the new chain out with the cutter teeth facing forward on top. You should wear gloves because it takes very little to inflict a deep cut with these chains.

Take the tool that came with your saw and loosen the two nuts (don't take them off yet)that hold the sideplate on over the chain. Leave the saw setting on its bottom.

When the nuts are loose take the screwdriver end of your wrench (or a screwdriver) and loosen the chain quite a bit. Wearing the gloves, make sure when you pull it forward it moves very loose.

Now take the two sidecover nuts all the way off. You'll see how the chain goes arpound the sproket. Push the bar back toward the sproket until it is loose enough to remove the chain.

The bar will come off too, and it is important to note the small nub that goes in the tensioning hole on the bar near the bottom of the saw, fairly close to the sproket. Keep the chain straight; I hang mine on nails driven into the wall in my shop. You can get them kinked up so that they seem they'll never straighten out.

Take this time to clean all behind the sidecover itself, and the entire enclosed area. There will be sawdust, twigs, etc. I blow mine off with compressed air, but protect your eyes. Take something, toothpick, Qtip, or the like and clean the groove all the way around the bar, including the oil holes near the rear.

You should now be ready to insert the new chain, putting the bar with the slot lined up with the sidecover bolts, and gently get the chain on the sproket. This may take a couple tries before you get it right. When it is on (you'll see you have to hold the bar up or it will tip too much) hold the bar in place with the tightener in the hole, and slip the side cover back on. Tighten the nuts just enough to hold the bar in place, then tighten the chain tension screw, while holding the bar. Tighten the side nuts more, until the bar is held in place.

When it is just tight enough to hold the bar but not prevent the bar from moving forward when you tighten it, tighten until you can still move the chain, but there is no visible slack in the chain. You should be able to grab the chain at the bottom and with moderate force pull it away from the bar about a half inch.

I like to pour a little oil on a new chain so it has plenty of lube. The chain will stretch because it is new. Run the saw at about 1/3 throttle for a minute, holding the end close to something to make sure the chain is throwing off a fine thread of oil. Then run it at 1/2 speed about another minute. Rev it a few times, make a practice cut or two, and it should by now need another slight tightening.

Good luck!

Sirwriter

Jun 07, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

7 Answers

Poulan pro with tooless chain tightening - chain will not stay on


i have a 4620 poulan that had the same problem. use it for 10 minutes, spend 15 minutes reinstalling the chain. i sent poulan an email threatening to sue them and they decided to send me the parts to change it over to the old style for free. try poulan.com

Mar 04, 2009 | Poulan Pro Chain Saw 46cc 20"

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