: A full "bench" inspection is highly recommended. This involves complete disassembly, cleaning, and replacing wear items like points, seals, and capacitors.
In the event of a malfunction or failure, the Scintilla magneto can be repaired or overhauled. The following procedures should be performed:
Unlike modern automotive ignition systems that rely on a 12-volt battery and an ignition coil, a Scintilla magneto produces its own electricity. It utilizes a rotating permanent magnet to induce a current in a stationary coil. The Magnetic Circuit
Soft iron structures that channel the magnetic field through the stationary coil. scintilla magneto manual
Place a mechanical timing light or cellophane strip between the points.
Once the internal timing is set, mount the magneto to the engine. Step 1: Prep the Engine
Verify the maximum point clearance matches factory specifications (typically 0.012 to 0.015 inches). Tighten the adjustment screws securely. 3. Mounting and Engine Timing Installation : A full "bench" inspection is highly recommended
Contains the primary winding of the coil (few turns of heavy wire).
Regular service prevents sudden ignition failure. Follow these intervals for optimal performance. Every 25 Operating Hours Inspect the breaker points for oil, dirt, or pitting.
Breaker contacts should be inspected regularly, frequently recommended around every 10,000 miles or 500 hours. The following procedures should be performed: Unlike modern
The Scintilla magneto is a stubborn beast. It wants to work, but it demands respect for its tolerances. If you follow the manual, clean the grounds, and replace the condenser, you will get that fat blue spark.
Bring the engine's Number 1 cylinder to the compression stroke. Rotate the crankshaft until the timing pointer aligns with the factory-specified firing angle (e.g., 20° or 25° Before Top Dead Center - BTDC).
The central shaft housing two, four, or eight magnetic poles (depending on the engine's cylinder count).
Specific data for aligning the magneto with the engine's firing order. Key Types of Scintilla Magneto Manuals