To turn on and off: Press and hold the power button for 2-3 seconds at the end of the machine
To change the machine speed: Press the power button once to change the speed. The lower the number, the faster the speed. The higher the number, the slower the speed.
To adjust needle length: Twist the knob on the PMU machine to adjust needle length. The lower the number, the shorter the needle. The higher the number, the longer the needle length. Always adjust while the machine is one for accurate needle length adjustments.