2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 42Get this manual

2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Repair Manual P/N 5005714, Page 42

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PERIODIC MAINTENANCE OIL PRESSURE BATTERY SOLUTION GRAVITY
pressue

switch (See page 3-30)
3 Install the oil pressure gauge and adaptor into the hole

5000902: Pres