Cleaning lightly soiled playfield rubber

Steps

• Lightly dirty rubber: wipe on a hard carnauba wax (or plastic cleaner), then wipe off the excess; this also keeps it supple and UV protected.
• Dirtier rubber: wipe with alcohol on a clean rag.
• Very dirty rubber, as a last resort: lacquer thinner, with the rubber off the game.

Keep lacquer thinner away from the playfield: it destroys the paint.

Systems

• Electro-mechanical

Related tips

• Old rubber holding a playfield switch closed
• Livening up the top arch rebound rubber
• Order a game-specific ring kit in white rubber

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