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Hasqvarna 435 16"- bar nut loosens excessively

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  • 302 Answers

Put a lock washer on it to stop it from backing off.

Posted on May 19, 2011

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Posted on Jan 02, 2017

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1 Answer

Change chain


Loosen and remove bar lock nuts and cover. screw tensioning screw to loosest point. wrap chain onto teeth of drive sprocket, then within grooves on bar. Be certain cutting edges are facing forward. Look at chain before removing. set bar with new chain to ensure the tension pin aligns with bar tensioning hole. Replace cover set nuts loosely. Tighten chain to about 1/4" out of groove when pulled on (wear gloves). Tighten nuts, spin chain to see it moves freely but does not hang free og bar groove. re-tension as necessary. Happy cutting!

Jan 04, 2015 | McCulloch Oregon 14" Chain for Mac Cat 351...

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How to take chain off poluan pro saw


Before putting your hands near saw chain cutters, put leather gloves on. Cutters sitting still can still draw some blood.
Loosen the nuts holding the clutch cover, loosen the adjuster, then remove the nuts. Remove the cover. Slide the bar along the studs, free of the adjuster, toward the clutch. Revove the chain from the bar groove, then move it clear of the clutch drive. It's now off. Good time to clean bar grooves and bar-mounting area of dirt & chips.
Reverse the procedure to install a chain, making sure the cutters have their cutting edge facing forward on the top of the bar. Make sure the adjuster is engaged with the bar before tightening the nuts at all.
Holding the bar nose up, tighten the adjuster until the chain touches the bar on the lower side. Tighten nuts.
After short run to clear any debris, recheck the chain tension.

Jan 29, 2014 | Poulan Pro Chain Saw 46cc 20"

1 Answer

Manual ryobi chainsaw


Chain replacement is basically the same on all chainsaws. Loosen the side retaining nuts on the cover over the chain. Now loosen the chain tension screw ( usually a flat headed screw) at least 4 full turns. Put the saw on its side with the blade up. Remove those side cover nuts and the side cover - the blade should sag as you remove the nuts. push the blade towards the engine, paying attention to the direction of the teeth on the chain. remove the chain and clean out the junk from behind the chain around the sprocket and from the inside of the side cover. The emergency brake band is located inside the cover - make sure you clean out the debris from around the band, tensioner screw assembly, and cover. Re-install the new chain, orienting the teeth in the correct direction. Re-install the side cover, making sure the tensioner pin goes into the hole in the bar ( blade). Slightly tighten the side nuts, then re-tension the chain until you can just pull the teeth off the bar. tighten the nuts, being sure you don't over tighten them ( a little past snug is good). Run the saw for a few minutes ( doing 1 cut will speed this step along). Loosen the side cover nuts and re-tension the chain, the re-tighten the nuts.
Hope this helps!!

Nov 26, 2013 | Garden

1 Answer

Tryed to put on a chain cant get it back togather right


Completely loosen the chain tensioner. When looking at the saw from the sprocket side(bar to the right) the chain WILL travel clockwise. Fit the chain on the bar.(ensure that the chain travels in collation with the sprocket at the end of the bar if equipped). When looking at the saw from the sprocket side(bar to the right) the chain WILL travel clockwise. With the chain still in the bar, fit the 5 or so links in the sprocket on the powerhead, engage the bar with the bar nuts, then lastly engage the chain in the tensioner. Place the sprocket cover and nuts. Tighten nuts then loosen about .5 turn. Adjust chain tensioner. Retighten nuts. See that tightening the nuts made your chain tighter, loosen nuts readjust chain, tighten nuts. With gloves on and the chain brake disengaged please ensure the chain travels around the bar. Put on your chaps and start cutting.

Sep 11, 2011 | Husqvarna , No.455 Rancher, 20" Gas -...

1 Answer

I have the Hq 435. The bar nut will excessively loosen during every cut to the point that I have to tighten it each after each cut. I am afraid that during a cut it will just come off altogether. This...


If this is the tooless brake cover, with the big plastic hand nut, i never liked this system, we always fitted the standar brake with a 13mm nut that could be tightened with the combination spanner, the brake is part no. 501388201.

May 18, 2011 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

Chain keeps coming off


Lay the chain out on a table or bench and check for bent/broken links, broken teeth, or damaged drive teeth. Inspect the bar for any damage and clean the small oil passages in the drive end. Inspect the drive sprocket for any tooth damage. Run the motor without the bar and chain for a few moments. Oil should ooze out of the small port in the motor case where the bar fits. If nothing, inspect the oil pump and lines. If oils ok, then reassemble the chain and bar making sure the bottom run of teeth cut toward you. Assemble the cover and mounting nuts finger tight. Tighten the chain up to the lower bar, but not so tight that it can't be turned by hand. Tighten the mounting nuts and recheck tension. Make sure the chain is properly sharpened as a dull chain will quickly loosen due to excess heat when cutting. Check the chain oiling by running the bar tip near some cardboard for a few moments--it should throw off a thin line of oil. Hope this helps!

Jun 24, 2010 | Black & Decker CCS818 Chain Saw

1 Answer

How to replace chain on eager ****** chainsaw


Remove the side cover on the saw Should be 2 nuts on studs

Either in the front between the bar and the saw body or in between the nuts on the side is a chain tightener. Use a flat bladed screwdriver to loosen the tightener and remove the chain from the drive and the bar. NOTE the direction of the chain teeth.
Replace with new or sharpened chain Reinstall the side cover Install the nuts DO NOT TIGHTEN just snug to contact Adjust chain to where you can just pull the chain free of the bar at the center of the bar length Tighten the nuts
Happy cutting!
Coyote

Mar 31, 2010 | Garden

2 Answers

Re-install chain


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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 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
Look carefully at the picture and your chain, it can be mounted backward; they do not cut when backward.

Dec 04, 2009 | McCulloch Garden

1 Answer

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

Oct 20, 2009 | Poulan Pro 42CC 2 Cycle Chainsaw, 18"

2 Answers

Chain came off


remove side cover of chain, loosen bar nut, there is a screw on the front of the saw under the sawdust and oil. Turning it one way tightens the bar. The other way loosens it. Loosen it til you get the chain back on, then tighten it til there is about 1/2" slack in the bottom of the chain between it and the bar. By the By, semi tighten the nut before any major adjustments, then adjust the chain to above and tighten bar nut. You should be set to go. BE CAREFUL! Dont forget personal safety!!!

May 10, 2009 | McCulloch Garden

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