Question about Husqvarna 450 e-series 18" Chain Saw

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I have a Husquavarna Rancher. The nuts that hold the bar keep coming off during use. If I tighten too much the chain won't move. If they are not tight they eventually rotate off. I is new and have

Brand not blank sorry

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  • 2 Answers

Make sure the chain is sitting on the ring sprocket properly
That is all it could be,if you cant tighten the nuts

Posted on Jan 14, 2013

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Posted on Jan 02, 2017

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SOURCE: after new clutch sprocket &good bar &chain

have you made sure that chain pitch and gauge are the same as the sprocket pitch pitches can be 3/8 lo pro 0.50 gauge

.325 x 0.50 gauge , .325 x 0.58 gauge

3/8 std x 0.50 or 3/8 x 0.58 gauge or 3/8 x 0.63 gauge

you could even have the correct drum but wrong rim sprocket on it

worst case is you could have mismatch bar and chain

make sure that bar adjjuster assy is working correctly

recheck chain / sprocket pitches and bar pitch and groove
gauge

be sure that you fitted chain to rim on sprocket correctly when you fitted bar and chain?

is the clutch cover pulling down tight ?

have a look and let me know if and what you find

cheers paul



Posted on Aug 12, 2010

  • 95 Answers

SOURCE: New 460 rancher 20" bar and chain cuts at an

It sounds like your chain is just dull.Or might not be sharpened right.This usually happens when the chain is getting dull.

Posted on Mar 09, 2011

Testimonial: "I think you may be correct, although the bar and chain are new it appears that one side of the chain has been sharpened at adifferent angle. Regards "

allsmalleng
  • 15 Answers

SOURCE: New Rancher 455. Ran for a few minutes then tried

Ok.. with the cover off the clutch you notice the screw and the pin that is suppose to go into the hole.. with the chain on the bar back the screw until the pin sits in the hole of the bar.. The chain should be lose you will see the chain dangle at the bottom of the bar.. put the cover back on with it lose.. hand tighten the two nuts that hold the cover on. with the bar in hand and you pulling the bar up make sure the two nuts are on tight enough so the bar does not move but dont over tighten it. tighten the screw you will notice the chain starting to move, and start to tighten up.. once the chain is in the grove of the bar grab the chain and move the chain with your hand to make sure you have not over tighten it. if the chain moves freely and is not lose ( you can also double check how tight it is by grabbing the chain below the bar and letting it go if it snaps back into the bar and doesnt hang there you are where you need to be.) tighten the two nuts up on the cover and start up the saw. Run the saw to make sure everything is all set and nothing is lose before cutting.. If the chain never get to tighten up you need a new chain. buy a new chain and follow the steps again. let me know if you have any questions

Posted on Jul 16, 2011

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1 Answer

Chain tension loosens during use


That is normal after using it. You have to loosen the lug nuts at the bar cover and with the screwdriver end of the tool tighten the screw near the back end of the bar. It is the chain adjustment screw. When tightening it, pull up on the chain with your other gloved hand. Don't over tighten it and tighten the nuts down so the chain will be snug but not too tight.
When sharpening your chain , do not file down the drag links too much. (They do cut better with the drag links filed down just a bit.) But that will also make your chain loosen up more quickly.

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remove the 2 nuts holding the sawdust strut/sidecover and remove side cover. remove chain and bar. clean the chain slot and oil holes on bar. install new chain over bar and place remainder of chain over chain sprocket.back off chain tightener until chain and bar fit. reinstall side cover.

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1 Answer

Chain wont tighten up


Jeff:
Loosen the two nuts on the right side cover of the saw (1/2 inch socket) turn them out 2 turns. Use a flat blade screwdriver on the screw at the right side front of the housing (near where the bar comes out of the saw). Turn the screw right until the chain can only be pulled up 1/8 of an inch at the top center of the bar. tighten the two 1/2 inch nuts. The two nuts clamp the bar so it won't move. If the chain tensioner still won't work, remove the right side housing by removing the two 1/2 inch nuts and look at the tensioner assembly and how it fits into the chain bar. The problem will be obvious. If you need to replace the tensioner assembly, a new one can be ordered through http://www.husqvarna.com.

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1 Answer

Chain tensioner screw keeps breaking on husqvarna 455 rancher


The tensioner should only move the bar when the retaining nut/nuts are loosened, once the nut/nuts are tightened there should be no pressure on the tensioner, so the nut/nuts are not tight enough.

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I think you should make sure that when you tighten the 2 nuts that hold the bar, that you raise up on the bar while you tighten nuts. That way the bar cant move up and tighten the chain.

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1 Answer

Loosen or tighten chain on a 445 Husqurna Rancher chain saw


If this is the tooless system, flip open the wing on the bar cover securing nut, slacken off one turn, now use the knurled wheel in the cove to slacken, or tighten the chain, if it has two 13mm bar nuts, slacken them off one turn each, then use a flat blade screw driver through the side cover, betwwen the bar nuts to adjust the chain, the screw is quite small so clean away the saw dust to locate it.

Oct 02, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

New Rancher 455. Ran for a few minutes then tried to tighten chain but adjuster was maxed out (completely tight clockwise). Removed cover, now can't get tension adjusting pin in hole in bar....pin sits...


Ok.. with the cover off the clutch you notice the screw and the pin that is suppose to go into the hole.. with the chain on the bar back the screw until the pin sits in the hole of the bar.. The chain should be lose you will see the chain dangle at the bottom of the bar.. put the cover back on with it lose.. hand tighten the two nuts that hold the cover on. with the bar in hand and you pulling the bar up make sure the two nuts are on tight enough so the bar does not move but dont over tighten it. tighten the screw you will notice the chain starting to move, and start to tighten up.. once the chain is in the grove of the bar grab the chain and move the chain with your hand to make sure you have not over tighten it. if the chain moves freely and is not lose ( you can also double check how tight it is by grabbing the chain below the bar and letting it go if it snaps back into the bar and doesnt hang there you are where you need to be.) tighten the two nuts up on the cover and start up the saw. Run the saw to make sure everything is all set and nothing is lose before cutting.. If the chain never get to tighten up you need a new chain. buy a new chain and follow the steps again. let me know if you have any questions

Jun 19, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

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.

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1 Answer

How do you rePlace the chain on the 455 rancher?


You take the chain cover off of the bar. It is two nuts. Take them off and the cover will come off. Slide the bar toward you and the chain will become slack. You can then slide off the chain from the sprocket. To put a new one on. You will need to turn the chain adjustment back all the way to the left. Then put the chain back over the sprocket, then onto the bar. Put the chain cover back on and tighten the chain back up. Then tighten the two nuts back to tight.

Apr 03, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

Just bought a new 455 Rancher, within 15 minutes of use the chain fell off the guide. Could not put this chain on guide again. Tried brand new chain and within 15 minutes of use, chain came off of guide...


if you loosen the nuts holding the bar on there is a tension screw on the opposite side from where the nuts are you should see it if you look from the front of the saw by the muffler you need to use it to put the proper tension on the chain if you turn it clock wise it should move the bar out tightning the chain you want a tiny bit of slack in the chain it should not be dogged down tight with the tension screw if you go counterclock wiseit should release tension. once tight tighten screws to hold on bar and spin chain by hand should be able to spin chain if not it is to tight. hope this helps

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