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Repair guides for the circular saws made by Craftsman.

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How to lock the blade shaft on a Craftsman 315.108220 circular saw?

Does anyone know whether there is a “brake” on the driven saw blade shaft of this model so you can unscrew the blade bolt? If not can you suggest how I can lock the shaft and remove the blade bolt? The blade is loose and freely rotates on the shaft but it is impossible to remove the blade bolt because the blade shaft and the armature turn. I seek suggestions how I can lock the shaft and thus remove the blade bolt. Because the saw blade can not be removed, I can’t fully disassemble the saw and thus gain access to the gear case where I could lock the shaft..

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From the owners manual ( the answer is “no”. Set the saw on a bench or other suitable support and use the attached blade wrench to loosen the spindle nut, holding the saw down with the guard UP so the blade is captured by the bench-top and kept from moving. Alternatively, on tight blades, I’ve always inserted a screwdriver shaft between blade teeth to “jam” the blade from moving. In a pinch you can also grip the blade with some pliers or channel-locks.

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The blade spins Freely , how to grip the entire motor period...only way to remove bolt is by holding the entire spinning what ?


The washer between the bolt and the blade is keyed. You can get some channel lock or pipe pliers in there, grip that washer securely, then loosen the nut while gripping that washer securely. That will allow you to loosen the bolt. Once It's loosened you should have no problem changing your blade.


Does seem like crap design oversight. When you can easily find a blade lock on so many saws today, why wouldn't they just include one? Fartin' Craftsman....


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