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The knob that holds the side panel in and tightens the chain on my black and decker chainsaw does not grip. The thread on the screw looks fine.

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  • dontbother10
    dontbother10 May 11, 2010

    You didn't give me a model number I found an IPL for a CCS818 Black & Decker.com IPL I don't see any knob. is this your saw? Please respond below. Lou



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SOURCE: Tension screw won't tighten the chain on a Stihl MS660

remove the cover and look to see if the tab is broken off

Posted on Apr 15, 2012


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I have a florbest chainsaw and the chain tension will not tighten up


turn saw upside down and check there is a pin going through the bottem hole on bar you should be able to see it in the gap. If its not you may have to take side cover to get it in, the pin moves the bar in and out. To do so like Joe Hogan said "loosen the two nuts that hold the chain cover on. Once they are just loose, then use a flat blade screw driver to turn the slot that you see right next to the base of the chain. Once the chain is tight, retighten the two nuts." just hold the end of the bar up as you tighten chain and nuts because you generally cut with the bottem side of the bar it will move to that spot anyway. If you cant move the tensioner any more the chain has been stretched either over normal lifespan chain or misuse eg bar getting stuck in cut an the pulled out, pushing into cut hard because chain is blunt or just not tighening it regulary enough, all will affect bars lifespan then sprockets lifespan then engines lifespan.
Also check the tensioner screw and pin for signs of threading which can happen from over tensioning if so screw may not be moving the pin or bar. if all is fine you may be able to remove one link in the chain and rejoin. chainsaw or lawnmower stores can usualy do it for you for next to nothing or you need a new chain. loose chains wreck your bar and sprockets quickly. It only take one of those three things to cause the chain to snap or slip off and wrap around your leg happened to me once lucky i was wearing cut proof pants that willstop a fully reving chainsaw. They are worth getting mine were only $180AU, better than a trench in your leg or worse ;)

Jul 05, 2014 | Garden

1 Answer

Tension screw won't tighten the chain on a Stihl MS660

remove the cover and look to see if the tab is broken off

Apr 14, 2012 | Stihl Models 064, 066, Ms640, Ms660

1 Answer

How to change a chain

First of all, make sure the saw is off. Also, before removing bolts, make sure the chain brake is not engaged (the chain should move freely).
Remove the guide bar side panel. Using a scwrench or wrench, unscrew the nuts and remove the plate to access the chain.

The side plate on most chainsaws will be held on by two nuts. Loosen the blade adjustment screw (a pin that is usually driven by a screw and pushes the blade out from the chainsaw to keep the chain tension tight).

The old chain is ready to be removed now that the sprocket plate is off of the saw. Pull the nose of the chainsaw's bar away from the chainsaw to release it from the tensioner.

Remove the old chainsaw chain.

The chain will easily remove from the guide bar with all that slack in it. Note the orientation of the cutting edges of the chain so you put the new one on the same way.

Pull the drive links out of the guide bar and slip the other end of the chain around the clutch drum.

Steps to Install a New Chainsaw Chain
Thread the new chain onto the saw.

Carefully thread your new or recently sharpened chainsaw chain around the chainsaw's clutch drum, making sure that the drive links engage in the sprocket.

Thread the rest of the drive links into the guide bar and around its nose, making sure all links are in the guide bar slot.
Align the guide bar.

With the chain properly threaded along the clutch drum and guide bar, put some tension into it by pulling on the nose of the guide bar away from the chainsaw.

While pulling the guide bar, make sure to seat it onto the saw's adjustment pin.

Replace the side plate.

The side plate is ready to go back on as long as the guide bar is properly positioned beneath.

Replace the plate and the nuts that hold it into position, but do not tighten the nuts down all the way yet. The guide bar must be allowed to move a little while the chain is tightened to the correct tension.
Tighten the chain to the correct tension. Use the tensioning screw to the side of the guide bar to adjust the tension on the chainsaw chain.

Finish tightening the side plate nuts.

The chainsaw chain replacement is now complete.

And here is a great overall reference guide to keeping a chainsaw sharp and running. Sharpening a chainsaw chain is a great way to extend the life and is less expensive and easier than replacing a chain. There are small grinding tools (like a dremel) that can be run off a small 12v battery or your vehicle battery that allow for quick 'tune-ups' on your chain if you are out cutting and need to sharpen your chain.

Aug 28, 2011 | Husqvarna "Chain Saw - 16" Bar, 3 Hp

1 Answer

I have a Mcculloch epromac 2200 chainsaw but have lost the manual. please could you tell me how to tighten the chain? Thanks. Its a toolless tightening feature.

if it the kind with the black half moon shaped plastic handle by the bar on the side loosen it and there should be another wing nut looking plastic knob to turn to tighten it.

Jul 08, 2011 | McCulloch Garden

2 Answers

The screws that hold our doorknob don't hold the knob anymore.They have loose threads and the screws are already too short that they don't hold the knob anymore. Everytime we turn the knob and pull it to...

Get a tap and re-tap the threads to the next screw size up. Then get matching setscrews. You could put a bit of Loctite on the new screws to keep them secure. Use a FINE thread tap so you get more threads in the knob.

Another solution is to clean and fill old screw hole with metal filled epoxy. Let is dry and re-drill and re-tap to original thread. Devcon makes a filled epoxy as well as JB Weld.

Mar 18, 2011 | Garden

2 Answers

I do not have a manual.... I can't adjust the tension. It looks like I have too much chain, the screw is as tight as I can get it. Help!! I have a Cordless Chain Saw, model CCS818 TYPE 1.

the bar should also raise and lower when you apply tension onto the blade - one way or the other it shoudl allow you to tighten the blade.,.. If it is still loose after that, you may be more safe to grab a new blade if this is from wear or use.
Also another fyi: If you get these blades hot and too tight, when they cool, they can warp your bar... I always loosen the chain on mine (per owners manual) immediately after use so it will not do any damage when it cools down..
Did you try to find an owners manual at black and decker dot com?
Best regards

Mar 08, 2011 | Black & Decker CCS818 Chain Saw

1 Answer

Fit new chain to gk1000 black & decker alligator

lay the machine on its side motor side facing downwards undo the 2 nuts that hold the cover on then remove cover, pull the chain bar backwards the remove the chain replace the chain making sure that the chain cuts in a clockwise direction then put cover back on, put nuts back on finger tight tension the blade by turning the flat bladed screw clock wise then tighten the 2 nuts up full..

Dec 01, 2010 | Black & Decker Garden

1 Answer

Jet bore threads not holding properly,side covers,breaking system

The jet bores are supposed to have a plastic liner near the outside of the bores that grips the jet screws to hold adjustment. You could try inserting a piece or two of thin plastic fishing leader, then inserting the jet screw. Don't insert so much leader that the material gets into the pointed end of the screw area as it will plug the jet. Any other threads that are not holding after being properly tightened can be be restrained by applying 'Loc Tite' thread locker fluid (from an auto parts house) to the threads before putting things together. Does the machine seem to have excessive vibration? Investigate the problem if it does. Hope this helps!

Apr 26, 2010 | Husqvarna Chain Saw 20" Bar

1 Answer

How do you adjust the tension in the black and decker 16 inch electric chain saw. The chain is too loose...

UNPLUG THE CHAINSAW. if it's got a bolt or two on the right hand side loosen them, then turn the adjuster screw next to the bar until you have about 1/4 inch slack in the chain. tighten nut/nuts. if it's got tool-less adjustment loosen the cover bolt, turn the tensioner, tighten the cover bolt.

Mar 28, 2010 | Garden

1 Answer

Chainsaw chain will not tighten on the guide bar

The two nuts on the bolts for the chain bar, need to be loosened.

Then the tension screw is tightened by turning it Clockwise. (To the Right)

If the chain doesn't tighten,

1.Insure that the nuts are loose enough, so that the chain bar may slide.

2.Insure that the tension adjusting screw does not have stripped threads, nor the threaded part of the case it screws through.

Oct 17, 2009 | McCulloch 16 In 4.5 Hp Electric Chainsaw...

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