1972 Johnson 4HP Outboard Motor Service Repair Manual P/N JM-7202, Page 7Get this manual

1972 Johnson 4HP Outboard Motor Service Repair Manual P/N JM-7202, Page 7

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SPECIFICATIONS Model 4W72 (weedless gearcase) 4R72 (standard gearcase) hp at 4500 rpm Propeller gear ratio Propeller drive Propeller 17:28 4W72 Model 12:25 4R72 Model Part Number 203230 1 8" 13 16" st