very hard to tighten bolts using spanner that came with machine, specifically ones middle position nuts, the inner nuts you cannot do with the given spanner, hex key bolts are better, and self adjusting are better still, it is almost impossible to remove blade, after initial attempts, still not succeeded, bolt off, but blade off spindle not so much the blade. Because I though I had the bolts down tight I was cutting mild steel, 3/8,ths L 1 inch, by 1 inch, the metal grabbed the blade whipped it out of the clamp, broke the blade, taking this back. the Ryobi, has hex key for rear fence, the Dewalt has quick release, others have leaver locks and only one this is much safer and faster. This is not a professional tool. I cannot recommend it will be taking it back. Like the light weight, and hold down lock. the lever is not comfortable to use or quick.