Question about Poulan Pro Chain Saw 46cc 20"

7 Answers

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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Posted on Jan 02, 2017

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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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procedure for tightening chain. loosen the chain guard nuts, tighten the bar adjusting screw by turning to the right or clockwise, the chain has to roll freely around the bar but not bind. check with gloves or rag, don't use bare hands to avoid accidents. once chain is adjusted, tighten the chain guard nuts. good luck!

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Chain will not move on chainsaw


Normal 0 This will be the basic instruction for most common saws. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle if the saw is equipped with a chain brake on the handle. Loosen the bar nuts on the clutch cover. Loosen tension screw or other adjuster (thumbscrew) to allow the bar to be moved toward the engine. Some saws have this tension adjustment built into the bar. This will provide enough slack in the chain to able to reinstall it. It may be necessary to remove the side cover to gain access to the clutch/gear assembly on the side of the engine if the chain also jumped the gear here. Remove the cover, inspect for any debris or other obstructions in this area. If none, replace the chain back over the drive gear and in the bar groove all the way around the bar. It may be necessary to turn the bar adjuster screw more to provide enough slack in the chain to do this. Once the chain is in place reinstall the cover and bar lock nuts. Snug up the nuts but do not tighten these. Turn the bar/chain adjuster screw to tighten the chain on the bar (take up slack). I usually tighten to a point where there is no slack between the chain and the bottom of the bar and I can still turn the chain easily around the bar by hand. With experience you will get the feel for this chain tension. Once the chain is properly tensioned, tighten the bar lock bolts/ nuts on the side cover.


Some Poulan Pros have an adjuster screw on the front of the engine case right beside the bar, some have a tool less adjuster on the clutch cover, and some have a slot in the bar for adjusting the chain tension.


I hope this helps you out.

May 15, 2010 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

2 Answers

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the adjustment screw near the end of the bar( next to the engine) needs to be turned in to tighten the chain just don't tighten it to much

Apr 04, 2010 | Poulan Pro Chain Saw 46cc 20"

2 Answers

I have an 18 inch bar and the chain has to be tightened every few minutes. I tighten the nuts against the bar as tight as I can but the bar must still be moving to loosing the chain. Do I need to add lock...


There is an adjusting pawl with a screw that does the tightening. The nuts only clamp the bar once the chain is tightened. The adjusting screw is in the plane of the bar. The pawl may have disengaged the bar or may have broken.

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1 Answer

How do i loosen chain on my poulan 46cc 20 inch chainsaw ?


Is it fitted with a tool less adjustment device? See Operator's Manual. Normal configuration as below:

d914aed.gif Chain adjustment
  1. Make sure the chain brake is off (gloves will protest your fingers).
  2. If necessary, loosen the bar nuts that are clamping the clutch cover in place (or whatever holds the clutch cover and bar on). They don't need these really loose - finger tight will do.
  3. Ease the tension adjustment until the chain is obviously loose.
  4. Using one hand, hold the nose of the bar up.
  5. While holding the nose up, adjust the tensioner so that the center of the chain just touches the underside of the bar, add a touch more.
  6. Continue holding the nose of the bar up & tighten up the bar nuts / bolts / quick-release system. HTH
Lou

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1 Answer

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Mike's answer might do it. My saw has a feature in the Chain Bar to turn right or left to move the Bar in or out. Loosen those same nut Mike wrote about, but now turn the Bar Feature (gear) to adjust, and then tighten the two nuts.

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Make sure the bar is positioned on the bar adjusting pin before you tighten cover. Adjust tension with bar adjusting screw, then tighten bar bolts.

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