2006 Johnson SD 30 HP 4 Stroke Outboards Service Repair Manual, PN 5006592, Page 282Get this manual
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Fuel System Additives 16,44 Carburetor Servicing 101 Fuel Filter 33, 62 Fuel Hose Connections 100 Fuel Leakage Check 100 Fuel Pump 111 Fuel Requirements 44 Hose Routing 250 Hoses 33 Minimum Octane 44