1978 Johnson 2HP outboards Service Repair Manual P/N JM-7802, Page 27Get this manual

1978 Johnson 2HP outboards Service Repair Manual P/N JM-7802, Page 27

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4-2 DESCRIPlON

The magneto employs tl1e interactiontl1e fast movil1g flywhe el magnet and stationary to generate an electric current of voltage sufficient to arc across the spark plug air