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Chan saw tension

I took my chain saw to the repaih shop the chan saw work ok, the chan became slack tried to tension it, but now wont cut, what am i doing wrong

kevin

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Hi Kevin

The engine is rotating clockwise and the chain saw as well(look at the chain "s theeth.

cheers savumihai71

Posted on Dec 06, 2008

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1 Answer

Why won't the saw engage the chain at any revs? Clutch problem?


The chain might be too tight on the bar. It needs at least 4 mm of slack when pulled up from the center of the bar. If chain tension is not the problem, then the clutch is gone.

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The saw starts and revs fine but 75% of the time when i go to cut something the blade stops, but revs still ok. can someone please help?!


If the chain is engaged properly in the sprocket and you've got the correct tension on the chain and the chain stops when you set it into a cut, you are probably riding the saw too hard...meaning you are pushing too hard for the saw to cut and the centrifugal clutch is stopping rotation. If this is an older saw, the pads inside the centrifugal clutch are probably badly worn necessitating replacement of the assembly.

Sometimes on a smaller saw, if the chain is sharpened with an aggressive angle, the little pads start slipping are wear quickly.

If you have the chain tension tightened too much, it will bind in the guidebar and stop the centrifugal clutch from rotating.

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How to put the chain back on a 16" Poulan electric chain saw


its probably like the gas model. so you remove the 2 nuts holding on the side cover of the blade side, remove the cover and the blade and chain. To fit back, slacken the adjuster screw a little bit, or if fitting a new chain then a fair amount, as you have to be careful that the pin on the adjuster fits into the proper hole on the saw bar, as you fit back on the bar, of which you have already cleaned out the grooves. supporting the bar in the slackest position, fit on the chain, making sure that the cutting edge at the bottom is coming towards the motor. Then slide the bar and chain away from the motor to take up the slack, then fit back the metal guide in the original position, fit cover with the adjuster pin in its hole on the bar, and replace the 2 nuts almost tight but slack enough to use the adjuster to set the chain to cutting position..slightly sagging on the sprocket nose type, or snug on the solid nose type..then tighten the cover 2 nuts firmly but not excessively as that will damage the machine..NB the bar & chain depends on the adjuster, not on the nuts tightness to maintain tension

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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

The chain on my Jonsered chainsaw becomes slack after just a few minutes use.


The chain on a chainsaw expands during use.This is caused by the heat generated by friction with the timber being cut. The chain should be monitored during use and the slack taken up by the tensioning adjustment screw or knob. You may have to loosen the nuts holding the bar before doing this and then tighten them securely. If these nuts are loose the chain can become slack. If you give me the model of the chainsaw I can try and find a manual and check the tensioning procedure as newer models of chainsaws have either automatic tensioning or have a thumbwheel arrangement for doing this.

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1 Answer

How do I reattach chain after it slipped off


Normal 0 This will be the basic instruction for most common saws. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle if the saw is equipped with a chain brake on the handle. Loosen the bar nuts on the clutch cover. Loosen tension screw or other adjuster (thumbscrew) to allow the bar to be moved toward the engine. Some saws have this tension adjustment built into the bar. This will provide enough slack in the chain to able to reinstall it. It may be necessary to remove the side cover to gain access to the clutch/gear assembly on the side of the engine if the chain also jumped the gear here. Remove the cover, inspect for any debris or other obstructions in this area. If none, replace the chain back over the drive gear and in the bar groove all the way around the bar. It may be necessary to turn the bar adjuster screw more to provide enough slack in the chain to do this. Once the chain is in place reinstall the cover and bar lock nuts. Snug up the nuts but do not tighten these. Turn the bar/chain adjuster screw to tighten the chain on the bar (take up slack). I usually tighten to a point where there is no slack between the chain and the bottom of the bar and I can still turn the chain easily around the bar by hand. With experience you will get the feel for this chain tension. Once the chain is properly tensioned, tighten the bar lock bolts/ nuts on the side cover. I hope this helps you out.

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1 Answer

Chain will not move on chainsaw


Normal 0 This will be the basic instruction for most common saws. Check that the chain brake is in disengaged position by moving the front hand guard towards the front handle if the saw is equipped with a chain brake on the handle. Loosen the bar nuts on the clutch cover. Loosen tension screw or other adjuster (thumbscrew) to allow the bar to be moved toward the engine. Some saws have this tension adjustment built into the bar. This will provide enough slack in the chain to able to reinstall it. It may be necessary to remove the side cover to gain access to the clutch/gear assembly on the side of the engine if the chain also jumped the gear here. Remove the cover, inspect for any debris or other obstructions in this area. If none, replace the chain back over the drive gear and in the bar groove all the way around the bar. It may be necessary to turn the bar adjuster screw more to provide enough slack in the chain to do this. Once the chain is in place reinstall the cover and bar lock nuts. Snug up the nuts but do not tighten these. Turn the bar/chain adjuster screw to tighten the chain on the bar (take up slack). I usually tighten to a point where there is no slack between the chain and the bottom of the bar and I can still turn the chain easily around the bar by hand. With experience you will get the feel for this chain tension. Once the chain is properly tensioned, tighten the bar lock bolts/ nuts on the side cover.


Some Poulan Pros have an adjuster screw on the front of the engine case right beside the bar, some have a tool less adjuster on the clutch cover, and some have a slot in the bar for adjusting the chain tension.


I hope this helps you out.

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2 Answers

After cutting down a tree, my chain stopped or became jammed and now the chain is loosely hanging. How do I adjust the chain to get it back to working order?


Remove the cover on the chain side of the saw and loosen the bar and slide it out to take out the chain slack. leave a little slack to allow for free movement.

Good luck and be careful.

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Check the tensioner screw, it could be too tight. Loosen the slack and the chain should move. And of course do this while its off.

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if you lost tension on chain and now it wont turn you might want to check sprocket

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