1974 Johnson 135 HP Outboard Motors Service Repair manual P/N JM-7412, Page 12Get this manual

1974 Johnson 135 HP Outboard Motors Service Repair manual P/N JM-7412, Page 12

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Retorque cylinder head screws (18-20 ftlbs and spark plugs after motor has been run and has reached operating temperature, and has cooled comfortable to touchLower
30 days Same as Fresh Water