Model No. DW321, variable-speed jigsaw, Yellow.

To lock/unlock blade, located black knob on top/back of jigsaw. Lift knob straight up, then twist counter-clockwise (to loosen) or clockwise (to tighten). Once tight, knob will reach tension; stop there and depress knob.

Saw - Jigsaw cordless

Updated: 24 May 2026