Question about Husqvarna Chain Saw 20" Bar

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Chain saw chain is loose

How do I tighten the chain on a rancher 455 chain saw?

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Loosen the side cover nuts, then turn the adjuster CW to bring the chain up to the lower edge of the bar, then check to see if the chain will move fairly easily by hand. Tighten the clamp nuts and recheck tension. If chain seems to get loose quickly again, it may not be sharpened correctly causing heat to build in the chain. You should see no reflection of light from the cutting edges if filed correctly and the saw should require very little pressure for it to cut rapidly. Hope this helps!

Posted on May 15, 2010

  • drallim May 18, 2010

    Forgot to mention that the chain oiling should be checked by running the saw at high speed with the bar tip near to a piece of cardboard--it should throw off a thin line of oil within several moments.

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1 Answer

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1 Answer

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If you have more questions or need additional help please reply below and I will get back to you. Thank you for using FixYa and Good Luck. HTH
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Here's a link to the specs for your saw with some useful info

http://www.husqvarna.com/us/homeowner/products/sawing/chainsaws/455-rancher/#specifications

Hope you found this very helpful and best regards!

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