1979 Johnson 2HP Outboards Service Repair Manual, P/N JM-7902, Page 29Get this manual
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Fig 1ll'e 4-5
spark plug installation
4-8h ki Spark Plug Gap
tlle plug, sure tlle plug seat tlle cylillce 11ead is fr ee fr0111 tu tisSee Figur 4-91st ll spark plug gas