2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 73Get this manual

2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 73

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IGNITION AND ELECTRICAL OIL PRESSURE CIRCUI
()l pressue

Black air pump assy0.15 kgfcm (2.1 psi)Continuity

Pump pressure: Less than

0.15 kgfcm (2.1 psi)