Question about Black & Decker Alligator Electric Lopper

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Chain comes off alligator lopper

We get about six cuts and the chain slips off the bar. How can we get this thing to work better? Its great while running, but very unpredictable

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The chain slipping out of its groove is common with this lopper. We have two of them and the chain pops out of both of them. I noticed that it occurs mostly during horizontal cuts, so I try to be extra careful during those cuts because gravity tends to pull the chain off. There is less trouble with vertical cuts. One reason for the chain coming off is that it lacks tension. There is no way to adjust the tension to make the chain tighter. That is done automatically by a spring. Black and Decker have to review the design of their lopper, which is a great tool. At Lowes I was told that there was a clearance sale on all their B

Posted on Aug 31, 2010


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Spare parts list for black & decker gk1050 alligator lopper

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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

Can i sharpen chain

Yes, you can do it with a hand file or if you need to sharpen them often I would suggest an electric sharpener. There are models you can mount to your chainsaw or remove your chain and use a bench mounted sharpener. I would suggest looking at for your sharpening solutions.




Nov 10, 2012 | Black & Decker Alligator Electric Lopper

2 Answers

I have a b and d alligator lopper that has never been used, but no manual. How is the chain lubricated? Type of oil? How is oil applied? Thx.

Information on your product, inlcuding a link to the Manual may be found here:

A high quality bar and chain oil or SAE30 weight motor oil should be used for chain and bar lubrication.

The use of a vegetable based bar and chain oil is recommended when pruning trees. Never use waste
oil or very thick oil. These may damage your chain saw.

- Before first use and every ten minutes of use you must oil the product with the recommended chain oil. Open the oiling cover and insert the bottle into the oil filling hole apply pressure to the bottle once to dispense oil.

- This should be adequate for about 10 minutes of cutting depending upon cutting speed and type of wood.

- The hole feeds the oil through to the chain onto the chain bar and an excessive amount of oil applied to the unit could mean the oil drips from the unit around the jaw area. This is normal and is nothing to be concerned about.

May 23, 2011 | Black & Decker Black Decker Lp1000...

1 Answer

Can I download a manual for the Alligator lopper?

Here is the page you are looking for. I was looking for this download also. Go top the link below, and when it opens up, on the left hand side there is a place that say's user manuals. Click that and the next page will ask you if you want an over view, or user guide, just click user guide. The next page will give you choices of which lopper you want, the electric, or cordless. Choose the one you want, and it will open a user guide for that model. There you go, I hope this helps. Here is the link

Mar 25, 2010 | Black & Decker Alligator Electric Lopper

1 Answer

Chain Slipping

Your chain would have to be incredibly loose to slip the sprocket. Enough that it would come off the bar before jumping the teeth on the rear sprocket. Highly unlikely.

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Bar & Chain oil is recommended and works best, however SAE 30 oil will also do the trick in a pinch.

Aug 06, 2009 | Black & Decker Alligator Electric Lopper

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