Converting to the newer outside return spring

Steps

• System 11 uses a cone spring over the plunger that chews the link and goes soft or breaks.
• Order the Fliptronic-style pawl, which adds a spring lever.
• Drill a 1/16 in hole in the bracket holding the EOS capacitor to anchor the new spring, taking care not to damage the capacitor.

Systems

• Williams System 11
• Williams System 11A
• Williams System 11B
• Williams System 11C

Related tips

• Flipper rebuild step 6: pawl, plunger, link and bushing
• Converting older flippers to the later return spring
• WPC-style conversion: plunger, springs, bats and coil
• Convert older series flipper coils to parallel when replacing

Source: Repairing Williams System 11 Pinball 1986 to 1990, Part Three, Clay Harrell