Your tree saw needs a cutting chain to work. And it needs a specific blade. You can see the specifications of the blade used in your saw on the guide bar of the tool. Length, number of cutting links and gauge and other specifications of the blade are inscribed on the guide bar. You can see the specs on looking at the guide bar from close.

If you are unable to see the specs on the tool then you should find specs of the blade on the user manual you got with the tool. But first you should know when you need a new replacement blade. You should know whether the existing blade needs cleaning or replacement. Do you know that chainsaw chains can be cleaned and grinded for long term use? It isn’t necessary to buy a new blade, when you can maintain existing blade.

Best Chainsaw chains can be sharpened with the help of a sharpener. You can buy a round file to grind your saw. But it would be much better if you buy an electric grinder. You can sharp existing blade a couple of times before its links become too thin to come under grinder. It is when you should replace the blade.   




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