2005 SO Johnson 4 Stroke 9.9-15HP Outboards Service Manual, Page 68Get this manual
ELECTRICAL CAUTION SYSTEM
Oil Pressure Switch Service
Removal
Remove COl stopper plate by sliding it upwardRemove COl unit from electrical parts holderRemove the two screws securing ignition coil
Installation
Installation is reverse order of removal with special attention to the following steps: Before installing oil pressure switch, wrap threads with sealing tape