2003+ Suzuki DF9.9/DF15 four stroke outboard motors service manual, Page 114Get this manual
POWER UNIT
3Drive the valve guide in from the valve spring side to the specified height& 09916-44910: Valve guideRemover installer 4Measure the valve guide protrusion H& 09900-20102: Vernier calipers Valve guide protrusion: Standard: INEX 10.0 0.5 mm (0.39 0.02 in)
5Refinish the valve guide bore& 09916-34550: Valve guide reamer (' 5.5 mm)09916-34542: Valve guide reamer handle NOTE: Clean and oil the valve guide bore after reaming
VALVE SEAT SERVICING If the valve seating contact width is out of the specification, reface the valve seat as follows:09916-20610: Valve seat cutter 15 (N-121) 09916-20620: Valve seat cutter 45 (N-122) 09916-24440: Handle adapter (N-503-1) 09916-24450: Solid pilot (N-100-5.52) 09916-54910: Handle (N-505)