2004 SR Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 73Get this manual
IGNITION AND ELECTRICAL OIL PRESSURE CIRCUIT
Testing Oil Pressure Caution System
ENGINE STOP SWITCH
Check: ContinuityInfinity
Air pressure gauge
Air pressure gauge Air pump AssyDigital voltage meter Tester selector:
P+IAir pump assy
(1 )Remove oil pressure switch(2)Connect air pressure gauge and pump
Tester probe connection Probe Other probe Black Green
(3)Apply pressure by air pump assy