Vertex Magneto Instructions

1. Rotation of original distributor and magneto should be the same. This may be checked by observing the distributor rotor while cranking the engine with the starter and comparing observed rotation with the arrow on the magneto cap.
2. Wire position numbers on the Vertex cap indicate sequence of firing of the magneto. These are not to be interpreted as the firing order of the engine. Be sure to examine the Vertex cap closely when installing ignition wires in order to maintain proper engine firing order.
3. RPM and degrees of advance are stated in terms of magneto speed and magneto degrees. Both of the figures must be doubled in order to determine crankshaft speed and degrees of advance.
4. The "P" terminal on the Vertex is for the ground wire to cut off ignition. NEVER ATTACH A LIVE WIRE TO THIS TERMINAL as serious internal damage to the magneto will result.
5. When installing or replacing an OAC Vertex distributor cap make certain the high-tension lead is properly inserted in the hole provided for it. If this lead becomes damaged it may be necessary to replace the entire internal coil assembly.
6. Do not drive or force gear or dog on Vertex spindle into engine receiver as internal damage to the magneto can occur.
7. Do not operate magneto unless all ignition cables are properly attached to the spark plugs.
8. Do not bundle or tape ignition wires together. This builds up parallel inductance and can cause cross-firing. Keep the ignition cable separated by non-metallic separators.

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