How to Clean a Pinball Machine: The Complete Maintenance Guide (Playfield, Rubbers, Contacts)
Cleaning a pinball machine on a regular basis is the simplest way to preserve its value, restore fast and smooth gameplay, and prevent costly breakdowns. In practice, pinball machine maintenance comes down to four key steps: dusting, cleaning and polishing the playfield, replacing worn rubbers, and checking contacts and the ball. This expert guide walks you through each step without risking damage to your machine.
- How Often Should You Maintain Your Pinball Machine?
- Cleaning Supplies for a Pinball Machine
- Cleaning the Playfield Step by Step
- Maintaining and Replacing Rubbers
- Cleaning Contacts and Checking Switches
- Ball, Mechanisms, and Backbox
- Mistakes to Avoid
- FAQ
How Often Should You Maintain Your Pinball Machine?
Regular maintenance beats a big annual cleaning session. A simple wipe with a microfiber cloth every two weeks already transforms the feel of the game. Here are the recommended frequencies shared by collectors — adjust based on your usage: the more you play, the more you maintain.
| Maintenance Task | Recommended Frequency |
|---|---|
| Dusting / microfiber cloth | Every week or before each play session |
| Full playfield cleaning (Novus 2) | Every 100 to 200 games, or every few months |
| Waxing / carnauba wax | 1 to 2 times per year (every 30 to 60 games under heavy use) |
| Ball replacement | 1 to 2 times per year (up to 4 times if you play often) |
| Rubber replacement | As soon as they harden or yellow (always replace beyond 10 years) |
| Contact / switch inspection | With every full cleaning |
These benchmarks are general guidelines shared by the community (Pinside, Pinball Adventures): a heavily played home pinball machine needs more attention than an occasional-use machine.
Cleaning Supplies for a Pinball Machine
Before you start, gather the right supplies. The goal is to clean effectively without damaging the clear coat, silk-screened artwork, or rubbers:
- Clean microfiber cloths (several) and soft cotton.
- Novus 2: the benchmark polish for playfields. Novus 1 is mainly a light cleaner; Novus 3 is too abrasive for regular use — save it for extreme cases.
- Hard carnauba wax (quality automotive wax) to protect the surface and restore ball speed.
- Mild cleaner: glass cleaner or soapy water for light jobs; a degreaser like Zep only on plastics away from printed areas.
- Small vacuum with a soft brush and narrow nozzle for tight spots.
- Isopropyl alcohol and an abrasive eraser for contacts.
- Bags, boxes, and a camera to organize disassembly.
Warning: on a playfield that is "planking" (clear coat lifting off in flakes), avoid any water-based product, which can cause the wood to swell and crack. When in doubt, always test on an inconspicuous area first.
Cleaning the Playfield Step by Step
The playfield is the centerpiece. A deep cleaning — what enthusiasts call "shopping" the machine — is done in three stages.
1. Disassemble and Dust
Turn off and unplug the machine, remove the ball, then gradually remove plastics, ramps, protectors, and removable parts. Photograph each step and store hardware in labeled bags: this is the key to error-free reassembly. Then vacuum dust from every corner (around the pop bumpers, under the slingshots, in the ball trough) with a soft brush.
2. Clean and Polish with Novus 2
Spray Novus 2 onto the cloth (never directly on the playfield) and work area by area, from the bottom of the playfield up. Focus on the ball lanes, inlanes/outlanes, and the ball trough, where grime accumulates. Novus 2 also removes ball marks and micro-scratches. You are done when the cloth comes away clean.
3. Wax (Carnauba Wax)
Once the playfield is clean and dry, apply a thin coat of hard carnauba wax in circular motions. Let the haze form, then buff with a clean microfiber cloth. The wax protects the clear coat from wear and restores the ball's original speed. Take this opportunity to replace any burned-out bulbs (or switch to LEDs) while the plastics are removed.
Maintaining and Replacing Rubbers
Rubbers (rings, slingshot rubbers, flipper rubbers) harden, yellow, and crack over time and with light exposure. For light cleaning, dampen a cloth with a bit of mild cleaner and wipe gently. Avoid harsh products (strong solvents): they alter the rubber's structure, causing it to break.
In most cases, it is better to replace than to keep scrubbing. A new rubber set costs little and literally "wakes up" the machine: livelier bounces, cleaner playfield. If your rubbers are over ten years old, replace them as a matter of course during cleaning, while the plastics are already off. A rubber that is stuck or melted onto the playfield should be removed carefully, without scraping the clear coat.
Cleaning Contacts and Checking Switches
On a vintage pinball machine, many "gameplay faults" (a target that doesn't register, a weak pop bumper, an ignored shot) come from oxidized contacts, not an electronic failure. Clean the switch contact blades with a contact cleaning card or a piece of fine paper passed between the blades, along with some isopropyl alcohol. Check the blade alignment and gap.
The remaining question is: is the problem mechanical (dirty contact, worn spring) or electronic (CPU board, driver board)? This is where a diagnostic tool makes all the difference. On a Gottlieb System 80, 80A, and 80B, the Lisy80 board includes a test mode that lets you individually activate solenoids, lamps, and switches to isolate the fault — you immediately know whether you need to clean a contact or replace a component. Let's be honest: an electronic board won't fix a mechanical defect, but it saves you from disassembling blindly.
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Ball, Mechanisms, and Backbox
The ball is often the overlooked weak link. A rusted or pitted ball acts like sandpaper and wears down your playfield with every game — it costs far less than a new playfield. Replace your balls one to two times per year (more under heavy use) and never try to clean them to "save" them if they are marked: just replace them.
For mechanisms, a few drops of light oil on flipper shafts and pivots are enough; avoid excess, which attracts dust. In the backbox, dust thoroughly, check the connectors, and especially watch for the battery that powers the NVRAM: this is the number one cause of board destruction. A leaking battery causes irreversible corrosion. We cover this critical topic in detail in our guide "Leaking Battery on a Pinball Machine: Dangers and the Permanent Solution". For a full restoration, follow our complete guide to restoring a vintage pinball machine.
Finally, the environment matters as much as cleaning: avoid humidity, direct sunlight, excessive heat, and sharp temperature fluctuations, which damage the clear coat, rubbers, and electronics.
Mistakes to Avoid
- Spraying product directly on the playfield: always apply to the cloth.
- Using a water-based product on a planking clear coat or on silk-screened artwork.
- Using a strong solvent on rubbers or printed plastics.
- Keeping a rusted ball "to save money": it's the playfield you're sacrificing.
- Reassembling without photos or labeled bags: a recipe for errors and lost parts.
- Confusing a mechanical fault with an electronic fault: diagnose before replacing.
FAQ — Cleaning and Maintaining a Pinball Machine
What product should you use to clean a pinball machine playfield?
Novus 2 is the benchmark: it cleans, polishes the clear coat, and removes ball marks without damaging it. Novus 1 is a lighter cleaner, Novus 3 is too abrasive for regular use. Always finish with a hard carnauba wax to protect the playfield.
How often should you wax a pinball machine playfield?
For home use, once or twice a year is generally enough. Under heavy use, waxing every 30 to 60 games keeps the playfield fast. A light microfiber wipe every two weeks already makes a big difference.
Can you clean a pinball machine with glass cleaner?
Yes, for light maintenance on a playfield in good condition, sprayed onto a cloth (never directly). However, avoid it on clear coats that are flaking (planking) and on silk-screened areas, where water can cause the wood to swell or attack the ink.
How do you clean pinball machine rubbers without damaging them?
Use a cloth with a bit of mild cleaner and wipe gently. Avoid harsh solvents that weaken the rubber. Beyond ten years, or as soon as they harden, it is better to replace them: a new set is affordable and transforms the game.
How often should you replace pinball machine balls?
One to two times per year under normal use, up to four times if you play a lot. A scratched or rusted ball wears the playfield like sandpaper: replacing it costs far less than a new playfield.
My pinball machine has a contact that doesn't respond: is it mechanical or electronic?
Most often it is mechanical (oxidized contact, misaligned blade): cleaning with isopropyl alcohol solves many cases. To determine the cause, a diagnostic tool like the Lisy80 (Gottlieb System 80/A/B) individually activates switches, lamps, and solenoids to isolate the issue. A board won't fix a mechanical defect, but it tells you where to look.
