2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Manual, Page 171Get this manual
LOWER UNIT REMOVAL AND DISASSEMBLY Pump case under panel Gasket (2) Water inlet housing Bolt Water inlet tube Grommet Grommet (f) Gasket Dowel pin (Qty2) Drain tube
Remove: Exhaust seal core CD Exhaust seal rubber (2)