How do I change the blade on a Smart Cut 350, and what torque do I use?

The Smart Cut 350 takes a blade up to 350 mm (14 in) with a 25.4 mm hole. Unplug the saw. Lock the head's vertical movement with the handwheel, remove the front guard, and loosen the lock nut with the 30 mm wrench supplied; it has a left-hand thread, so you turn it clockwise to loosen. Tilt the head forward slightly to lift out the blade. Make sure no debris sits between the flange and the blade, avoid tools that could dent the flange, fit the new blade with the correct rotation arrow, and tighten the nut anticlockwise to 40 Nm (about 30 ft-lb). Never use reduction rings to adapt the blade hole.