Question about Poulan Pro Chain Saw 46cc 20"

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

I have a poulan pro 18" chainsaw. It has the tool-less chain tightening. I will try to adjust the bar to tighten the chain but the chain will not stay tight. How can I keep the chain tight for more than one or two cuts?

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  • Anonymous Mar 17, 2009

    My saw keeps throwing the chain.
    I have found that the problem is the tightening knob (not the adjusting wheel) It backs off while running. I have cleaned it and checked for wear, but it still comes loose. I have resorted to sticking duct tape over the knob when using the saw.
    I suspect this is a design defect and was surfing the web looking for a recall or replacement part.
    Dangerous problem and causes damage to chain guide due to burs on chain that must be filed off.

  • Anonymous Mar 26, 2009

    The housing for my chain tightener is cracked.. Now the chian will not tighten. Can I get another plastc housing part?

  • Anonymous Apr 03, 2009

    same problem

  • Anonymous Mar 12, 2014

    where to put the oil

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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

Posted on Apr 27, 2009

  • Patrick Ford
    Patrick Ford Jan 10, 2013

    I did as you said;they are sending a non-quick release cover at no charge. Thanks

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@ nuttdeerhunt;
I wish you had posted this as a new entry but; ask and ye shall receive. Go here:
Poulan.com
http://www.ordertree.com/modelinfo/POULAN-WEED-EATER/75.59.html or phone them
Handheld (Chainsaws, Trimmers, Blowers, Edgers)
1 (800) 554-6723 (Please have your saw within easy reach)

I think the saw you have is a "PP4620AVX Gas Saw" you want to modify to a "PP4620AVHD Gas Saw". Open the "PP4620AVHD Gas Saw"on the "Handle, Chassis & Bar Assembly" detail; item 64 is the adjuster assembly ($2.53) and item 67 is the clutch cover ($21.83). I suggest you call them first. The cover may contain the adjuster already. It is also a good idea to touch base with the real experts about your saw.
I send wishes for a Prosperous New Year and HTH.
Lou

Posted on Dec 28, 2009

  • dontbother10
    dontbother10 Dec 28, 2009

    After reading the other comments you will probably need a pair of "Bar nuts" item 68 ($0.56 each?) and perhaps a scrench (not shown) pn PWE 530031135 ($9.75)

    Merry Christmas

    Lou

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This may be a dumb question, but you are loosening the bar knob before adjusting the tension, and then re-tightening it, right? If you've had the bar off recently, you may want to check that the adjusting pin is in the adjusting hole in the bar.

Posted on Mar 04, 2009

  • Dennis
    Dennis Nov 10, 2013

    I did that, and the chain still loosens, culd it be the plastic gears are worn ?

  • Dennis
    Dennis Nov 10, 2013

    I did that and the chain still loosens, could it be the plastic gears are worn and need replacing ?

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Go to where you can get parts for your saw and order the clutch cover for the model that does not come with the tooless tightening system. The design is poor and I had the same problem with mine. I ordered the clutch cover for the poulan wild thing and it fit perfect (although it is lime green) and my saw works great now.

Posted on Mar 28, 2009

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Some of us need to cut wood NOW, not wait for a message from Poulan, order a part etc. Those are the best solution, but if a tree is hanging over your garage, or the temp is dropping tonight, try this: If you start your saw with the chain tight and then just let it idle, you will see the little adjusting wheel start to turn on it's own, and the chain will loosen itself. I am not sure what "normally" keeps this from happening, but you can improvise something to keep it from turning on its own (cardboard or wood scrap wedge, screw, ?duct tape, etc.) and that will keep it from loosening while you are waiting for the new cover etc.

Posted on Oct 24, 2011

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Dose anyone have a part number for a cover to fit the 4620 to convert it to manual chain adjust and no chainbrake,

Posted on Dec 28, 2009

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Same problem. The tensioner is JUNK. Remove the click lever wheel and throw it away. Solution is to go to hardware store and buy one nut to fit the one stud which is usable to tighten to hold the bar.

I am sorry, but I don't recall if the nut is metric or SAE, I think it is metric. However, most chainsaws use two nuts to hold the bar in place. This has proven to be unnecessary to have two, since just one nut has held tight for months!

I would echo the same issues calling Poulan about this. They suggest I take the saw to a Poulan authorized repair shop. The saw is not worth any money to justify taking it to a repair shop. Honestly I am disgusted with this saw. I have had 3 poulans over the years. This is my LAST Poulan. If this is the best they have, then I would surmise Poulan won't be around long!

Posted on Jul 31, 2009

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1 Answer

How to adjust a poulon pro chain saw 46cc 20" chain tighting


First, I'd read the manual if in doubt. No matter the type of adjuster, tool-less or not, you loosen the bar nuts, tighten the adjuster until the chain just touches the bar on the bottom (while holding the bar nose up) then tighten the bar nuts. Chain should move easily.
Re Poulan chain tightening. Be sure it's oiled and sharp, of course.

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1 Answer

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