1988 Johnson/Evinrude "CC" 40 thru 55 Models Service Repair Manual P/N 507661, Page 238Get this manual
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Pump pressure Up to 3-6 psi (21-42 kPa)If pressure gauge indicates leakage, submerge the gearcase in water to determine source of leakage as evidenced bubbIesIf the gearcase pressure gauge does not in