Question about Poulan Pro Chain Saw 46cc 20"

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Chain becomes very loose with little use

What is the recommended torque for the two nuts that attach the chain bar? (Sears 18" Chain Saw #35182)

Thanks
Paul

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The problem with torqueing the nuts is that it's not enough tighting.i tell my customers that you need to tighten them as tight as you can get them.the nuts will not vibrate loose then.don't worry about breaking the studs they are very hard.

Posted on Feb 24, 2009

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3 Answers

The chain keeps coming lose and falls off


Make sure chain tension on the bar is correct and then the 2 nuts holding the bar is correct, Youtube has alot of videos on how to set chain tension as well as the Oregon website

Aug 27, 2014 | Craftsman sears 18" Chain Saw Chain (...

1 Answer

Sears 18 42cc chain saw blade keeps coming lose


I have found that the number one reason for a loose chain is from stretching, and that comes from heat or clearing small brush.

Heat being that it is not oiling properly and wears quicker, and the small brush answer (cutting lots of 1/2 in Buckthorn) tends to jerk the chain and manually stretches rather than a steady cut in a log which tends to be smoother.



With that said, yours might be something else. If I can ask a few question... When the saw was purchased, did you install the bar and chain? Second your level of experience - and is this your first saw. What I need to rule out is that the bar could be on wrong.



This saw was more than likely built by Poulan and it should have 2 nuts holding the bar. Does the bar loosen up? If the answer is no you might have a bar that is miss matched to the chain. What that means is that the chains "drivers", the tooth that is down in the bar could be a .050 and the bar could be a .063, hence the chain wobbles more that it should and might be more prone to jumping off.

Solution: Replace bar and chain and make sure they are a matched, lastly, always cut with a sharp chain.

Good luck,

kj

Aug 27, 2014 | Craftsman sears 18" Chain Saw Chain (...

1 Answer

How do you fix the chain


Remove cover on the chain side of the saw. Loosen the two hex nuts that hold the bar onto the saw. You will need to loosen the tightener screw also. Place chain back onto the bar making sure the chain is positioned properly in the sprocket at the rear of the bar and just reverse the directions. Tighten the tightener screw until the chain is tightened leaving a little slack, then tighten the two hex nut. Replace the side cover. When you pull the chain down away from the bar, it should have just a bit of slack not tight. This allows the chain to turn without a lot of friction. I hope this helps.

Jan 26, 2014 | Homelite Chainsaws

1 Answer

Describe your sears 18"


I put a new bar and chain on my craftsman 18" chainsaw because the chain keeps coming loose. I am still having the same problem, after running 10 seconds, the chain falls off.

Sep 11, 2011 | Craftsman sears 18" Chain Saw Chain (...

1 Answer

After one cut the saw blade comes Loose.


The tension of the blade probably needs to be adjusted. In general there should be about an eight of an inch of clearance between the chain and bar when the chain is pulled away from the bar but you should check the manual to see what gap is recommended. If the chain is blunt and overheating, it can expand and become loose rapidly. The slack in a chain should be taken up in any case after a period of cutting to avoid an if the chain comes off the bar.The procedure for adjusting the tension is to loosen the nuts holding the bar, adjust the tension and then tighten the nuts securely.

Jul 28, 2011 | Chainsaws

1 Answer

Chainm has popped . How do I put back on?


On the right side of the saw, where the chain disappears into the housing, there should be one or two nuts. These are what hold the Bar and Chain retainer plate on. Remove these two nuts, and the plate, the Bar, and the Chain will come off.

Now, just to put the chain Back on to the Bar, all you have to do is to LOOSEN these two nuts, and either right between them, or NEAR them is a FLAT-HEADED SCREW. Turn this screw to either LOOSEN, (retract) the Bar, or EXTEND the Bar. So, retact the bar, which loosens the chain, put the chain back on the bar, slowly extend the bar, by turning the screw, so that the chain gets tighter, then tighten back up the two nuts.

The chain should have a small amount of slack in it when you are finished. If you tighten it up too much, then it won't freely move, and will prematurely wear out your bar.

Good Luck.

Jun 11, 2011 | Craftsman sears 18" Chain Saw Chain (...

1 Answer

My chain keeps getting loose....is that normal?


On a new chain perhaps. One that has been in service for a while the stretch should be adjusted out. Not holding the nose of the bar up as you tighten the bar nuts is the usual cause of this malady.
Chain Adjustment
  1. Make sure the chain brake is off (gloves recommended).
  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 do not 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

Jan 14, 2010 | Ryobi Factory Reconditioned 18" 40cc...

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.

Jan 01, 2010 | Poulan PP4218AV 18" Chain Saw

1 Answer

How do you loosen the chain on a chainsaw husqvarna 136?


Hi there. On the outer bar cover near the motor you will find 2 nuts. Slightly loosen those two nuts. Then check around the these nuts or near where the bar attaches to the powerrhead at the front of the saw. You should find an adjustment screw of some sort, which will be the chain tensioning screw (which moves the bar forward/back depending on which way it is turned). This has the effect of either tightening or loosening the chain, so turn this screw noting whether the chain is tightening or becoming loose.

You must slightly undo those 2 main nuts on the side of the chain/bar cover first or the bar will not move and the chain cannot be loosened.

Jul 08, 2009 | Husqvarna Chainsaws

2 Answers

I have an Echo CS-440 18" chain saw and the chain came off. Now that I have put it back on, it won't move either by hand or when the engine is running. Help


OK.  This is simple. Either the chain brake is engaged or the chain is too tight. Start by pulling back on the chain brake toward you.  There should be a "click" if the brake was released.  If the chain is still immovable, try resetting the chain tension. 1. remove the spark plug wire 2. loosen the two clutch cover nuts 3.hold the bar nose up and loosen the tension adjustment screw until the chain moves freely without becoming loose. 4. tighten both clutch cover nuts with the bar held up. 5. Pull the chain around the bar by hand.  Loosen the adjustment if you feel tight spots. 6. When the chain is properly tensioned,tighten clutch cover nuts securely.  Do not overtighten! 7.  Check chain brake operation and release. 8. Replace spark plug wire and operate  saw.
Hope this solution will Fixya.

Jan 10, 2009 | Husqvarna Chain Saw 20" Bar

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