Scintilla Magneto Manual May 2026

Always treat a magneto-equipped engine as if it could start at any second. If the internal grounding wire (the P-lead) is broken, the magneto is "hot," meaning it will fire if the propeller or flywheel is turned, even if the ignition switch is "OFF." Summary Checklist for Your Shop Manual Tool Needed Every 100 Hours Feeler Gauge Cleaning Blocks Denatured Alcohol Bearing Lube Per Manufacturer Specs Instrument Oil Magnet Recharge Rare (every 10+ years) Magneto Charger

If the points are pitted or "frosted," they should be replaced or dressed with a fine point file. 4. Internal Timing (The E-Gap) scintilla magneto manual

If your internal timing is off, the engine may start easily but stumble at high RPMs, or vice versa. Always treat a magneto-equipped engine as if it

"E-gap" stands for Efficiency Gap. It is the specific number of degrees past the magnetic neutral position where the points are timed to open. Internal Timing (The E-Gap) If your internal timing

The Comprehensive Guide to Scintilla Magneto Maintenance and Operation

For vintage aircraft enthusiasts, classic tractor restorers, and stationary engine collectors, the represents the gold standard of mid-century ignition engineering. Known for their incredible reliability and "hot" spark, these Swiss-designed units were the heartbeat of legendary engines like the Pratt & Whitney Wasp and various Wright Cyclones.

Note: Adjusting E-gap usually requires a timing light or a dedicated magneto synchronization box. 5. Lubrication: Less is More One of the fastest ways to ruin a Scintilla is over-oiling.