Question about Husqvarna , No.455 Rancher, 20" Gas - Powered Chainsaw

1 Answer

Loose chain The bar will not tighten anymore, it's maxed out on the adjustment. So there is too much slack in the chain. This is a 20 inch bar and chain. A new chain good for the first month or so and then the bar will no longer tighten enough to tighten the chain.

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  • 100 Answers

If you have atleast 1/8" of teeth still on chain .take a link or 2 off good to go saved you beer money.

Posted on Oct 23, 2012

6 Suggested Answers

6ya6ya
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Posted on Jan 02, 2017

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SOURCE: replace 18 with 20 inch bar and chain on Model 350

Yes

Posted on Jun 15, 2009

dontbother10
  • 2220 Answers

SOURCE: How can i tighten the chain

John;
if you have used all the adjustment I recommend you replace the chain. Take it with you to a local saw shop (I prefer Stihl chain to all others) for use as a replacement pattern. Ask the technician making your replacement whether he thinks it a good idea to remove a link from your existing chain. He is the only one with expertise, in a position to provide an informed answer, and he has the necessary tools to accomplish it. If the chain breaks at speed it can be ugly.

If you take your saw with you the technician (mid day, mid week) will likely remove the old and install the new chains as part of the service. Ask to watch. There is a procedure in your OM. HTH
Lou

Posted on Feb 19, 2010

dontbother10
  • 2220 Answers

SOURCE: Hot bar loose chain

Hello Sam;
Sounds like your oiler is not operating, try this please:
Oil System Plugged:

  1. Remove the clutch cover, bar, and chain, clean the bar groove, any holes and passages on the rear of the bar (both sides, consider rotating the bar), if equipped with a sprocket nose ensure it rotates easily at least one complete revolution. Clean the saw oiler hole and channel. Insert a blunted, hooked piece of wire through the oil filler hole and pull the hose in the oil tank out. Pay attention to the screen or filter on the free end (clean or replace, difficult to determine serviceability). Start the saw and see if it oils when revved up (oozes down side of saw). If yes reassemble your saw. If no, continue with 2.
  2. Work your way through the linkage (use IPL to identify components and locations) cleaning and replacing any defective parts as you go. Carefully check the hoses for cracks especially at bends and connections. If equipped with an oil pump it is usually behind the clutch (clutch is a left handed thread). Please make extensive notes & some digital pictures will help during reassembly.
If it does not oil on completion of 1 it is most likely a bad oiler or worm gear (see IPL). Post back (below) with a model and serial number if no ooze and I will provide an IPL.

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
Lou

Posted on Mar 29, 2010

  • 4088 Answers

SOURCE: chain saw chain is loose

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

  • 4088 Answers

SOURCE: Hot bar loose chain

Remove the bar and chain from the engine. Clean the side of the engine where the bar fits, start the engine and run fast for several moments. Oil should ooze out of a port and run down the engine side. If nothing, then the oil lines, valves, tank filter, and the oil pump (behind the clutch assembly) should be checked for plugging, breakage, or other problems. If oil comes out, then clean the oil holes in the bar drive end including the two small holes that lead from the larger holes out to the chain groove on each side. Clean the entire chain groove. Oil and check the end sprocket for smooth, relatively free turning. Compressed air is very useful for cleaning these parts. Reassemble bar and chain making sure the adjustment tang drops into one of the large holes--you may have to back off the adjustment several turns to make this work. Make sure the chain cuts toward you on the bottom run and install the clamp nuts/bolts finger tight. Adjust the chain until it pulls up to the bar and you can turn the chain by hand. Run a line of oil around the chain to pre-lube it. Tighten the clamp nuts and retest the tension again. If ok, start the engine and run for several minutes, then place the tip near some cardboard and run at speed for several moments--it should throw off a thin line of oil. Make sure the chain is fully sharpened then try a few cuts. It should cut smoothly without any undue pressure from you. Hope this helps!

Posted on May 18, 2010

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Pmorrow1975:

When you can't adjust the chain any more, the chain has stretched so far that you will need to remove the chain and replace it, or the tensioner pawl has slipped out of the bar and the chain tensioner will not work. Let's start with the easier solution. First lay the saw on it's left side so the bar is up and you can see two studs with nuts on them. These nuts hold the bar and side cover on. Remove the nuts (a 1/2 inch socket is what you need) and remove the side cover. The side cover holds the chain tensioner. Check to see that when you put the side cover on, the pawl on the chain tensioner fits into the small hole in the bar. If it does not, adjust the chain tensioner screw (below one of the chain retention stud holes in the side cover) until the pawl fits into the hole in the bar, and reinstall the side plate. You'll be able to adjust the chain tension now. If the chain tension is still too loose when the back of the pawl (visible through the slot in the side cover) is at the back of the slot, it is time to replace the chain as it has stretched beyond adjustment parameters.

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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.

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Husqvarna 350, the chain continues to free spin after trigger is released.


Is the chain loose?
ee42fee.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

Oct 29, 2009 | Husqvarna Chain Saw 20" Bar

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CHAIN AND BAR KEEPS LOOSENING UP AFTER 3 TO 4 CUTS. RESET TENSION AND BAR AND LOOSENS AGAIN AFTER 3 TO 4 CUTS.


Are you holding the nose of the bar up as you tighten the bar nuts?
You loosen the bar nuts and gravity pulls the bar down. You check the chain and the tension is correct, tighten bar nuts. Begin a cut and the bar slowly moves upward (no matter how tight the bar nuts) and the chain becomes slack.
19d6408.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.
One more likely possibility, is the chain isn't being oiled.
Checking chain lubrication
Aim the tip of the bar at a light colored surface about 20
cm (8 inches) away. After 1 minute running at 3/4 throttle
you should see a distinct line of oil on the light surface. HTH
Lou

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


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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.
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  4. Using one hand, hold the nose of the bar up.
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