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• Playfield life expectancy and play can be extended by perlodic cleaning.
Inspect and hand polish the balls in a clean cloth. Replace chipped balls.
Otherwise these balls will ruin playfield finish in a short time. Don't use
quantities of water. caustic or abrasive cleaners or cleaning pads on the
playfield. Don't allow a wax or polish build-up. Waxes yellow with age and
spoil the playfield. When cleaning plastic parts. don't use cleaners normally
used on other parts of the playfield: harsh cleaners can melt playfteld
plastics.
• Switch contacts should be free of dust. dirt. and corrosion. Plating helps
switch contacts. (except flipper button switch assemblies) resist corrosion.
Filing or burnishing contacts breaks the finish and encourages corrosion.
Effective contact cleaning requires gentler treatment. Gently close the
contacts on a clean business card or piece of paper. Wipe the contacts until
they're clean. If necessary. regap the contacts to 1/16 inch. With flipper
button swithc contacts. severely pitted contacts may cause game
malfunctions. Remove the tarnish from the switch contacts with a contact
file. Then smooth your work with a burnishing tool.
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