Tattoo Machine Troubleshooting 

#A136 Armature bar sticks to coils.

Short Circuit Troubleshooting Answer # A136
Problem	Armature bar sticks to coil when the  foot pedal is pressed.
Because	The electrical circuit is shorted out.
Check	Solder lug must not touch the frame.
Why	Electricity will flow through any circuit  that is connected.
Cause	If the rear-standoff touches the frame a  new path for electricity is created.
Remedy	Install plastic recessed washer.

Also see  needle insertion in tube.

(Bring up separate labeled parts window) then re-size the new window and drag it to the side so that you can see both windows..