How Do You Size Replacement Chain Saw Blades?
The blade on a chain saw is actually made up of a guide bar and a cutting chain. The components of the “blades,” or bar and chain, can get worn out, bent or broken, and should be replaced on a regular basis. Most guide bars also have a nose sprocket at the tip, which can also wear out, requiring bar replacement. Determining the correct size for your replacement bar and chain is crucial for the proper maintenance of your chain saw and you should never run a chainsaw with an incorrect bar and chain. Release the chain brake by pulling back on the chain brake handle that runs across the top of the saw’s body. Locate the clutch cover on the side of the saw body; the bar and chain attach to the saw body behind the cover. Use the wrench to loosen the bolts on the clutch cover until they are finger tight. Loosen the tensioner screw until the bar backs up enough so the chain hangs slack below the bar. This tensioner screw will be located in the clutch cover or on the bar itself. Remove the bolt
