Realigning a roto-target

Steps

• Symptom: hitting a target scores nothing, or the target numbers sit off-centre in the window.
• Under the playfield, check the set screws holding the rotating disc to the motor shaft; if loose, line up a target with its switch and tighten them with a hex key.
• Otherwise loosen (do not remove) the three screws holding the cover plate in its slotted holes, turn the plate so a target sits exactly over the switch, and retighten.
• Rotate the unit by hand to check every target stops over the switch, then test each target in a game.

Systems

• Electro-mechanical

Related tips

• Roto-target spins only a number or two, or misses scores
• Gottlieb EMs with large drop target banks
• Setting drop target reset coils to prevent metal fatigue
• Drop targets don't all reset fully: rebuild the reset and face the worn reset bar

Source: Pinball Machine Care & Maintenance, Bernard B. Kamoroff (Bell Springs Pinball Alley)