1976 Johnson Outboards Service Repair Manual 75 HP Models P/N JM-7612, Page 10Get this manual
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2-2 SPECIFICAlONS
The mdd pover operating rnge fOl' your outboard is 52005800 R.P.MIn order to get the best pel'fo rl11 nce outbo:lrd the end this range, from 52005800 R.P.M is the engine speed