Setting a Williams EM to free play

Steps

• Turn the credit wheel to zero credits.
• On the credit stepper the notched wheel's pin opens two switches at zero credits.
• Set the top one permanently closed, or jumper it.
• Don't touch the lower switch worked by the movable slotted-head pin: it opens at maximum credits.

Systems

• Electro-mechanical

Related tips

• Setting an EM game to free play

Source: Repairing Electro-Mechanical (EM) Coin Operated Games to 1978, Part Two, Clay Harrell (pinrepair.com)