Johnson Evinrude Outboards: Power Pack Diagnosis & Repair Help
Johnson Evinrude Forum Topic: Powerpacks
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Johnson Evinrude Forum Topics
Power Pack (Ignition Module) for Johnson Evinrude Outboard
A power pack, or ignition module, is the device that controls the timing of ignition functions on all engine cylinders. Some power packs also have a S.L.O.W. (speed limiting operator warning) function that limits the RPMs the engine is capable of attaining. This is important to keep an engine from running at overly-high revolutions during operation. Situations like cavitation when cornering or suddenly losing a propeller could cause a non-limited engine to over-rev causing damage.