2003 ST 4 Stroke 9.9/15HP Johnson outboards Service Manual, Page 89Get this manual
FUEL SYSTEM
CARBURETOR
Remove: Drain screw CD Screw ell (Qty4) Float chamber Q) Hose Cap Cap Holder ({) Plunger O-ring Spring Float chamber gasket Main nozzle cap Float pin Float Screw Plate Needle valve assembly Main jetMain nozzle Pilot jet