Zipper flipper base plate tension screws

Two screws with large washers adjust how tightly the moving flipper base plates are held, with one fibre washer under each metal washer and another between the moving and fixed plates, and a jam nut on the far side. Set them tight enough to remove play but loose enough that the plates swing without binding.

Systems

• Electro-mechanical

Games

• 4 Queens
• Bazaar
• Capersville
• Cosmos
• Dixieland
• Dogies
• Doozie
• Four Million B.C.
• Hayburners II
• Joker
• Joust
• MiniZag
• Nip-It
• Op-Pop-Pop
• Rocket III
• RockMakers
• Student Prince
• Surfers
• The Wiggler

Related tips

• Bally zipper flipper solenoids changed at Capersville
• Zipper flipper rebuild parts and stronger coils
• Rewinding a plastic-encased zipper flipper close coil
• Zipper flippers won't close: burnt close solenoid
• Rebuilding an EM flipper
• An EM flipper coil is two windings
• How an EM flipper coil and its EOS switch work
• Gottlieb EM flipper rebuild parts

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