1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 294Get this manual

1990 Johnson Evinrude "ES" 40 thru 55 Service Repair Manual, P/N 507872, Page 294

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THERMAL EXPANSION RELIEF

3 When internal pressure reaches approximately 8000 PSI (55,000 kPa), the EXPANSION relief valve opens and allows fluid to flow into the reservoir

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