Suzuki DF25/DF30 Four Stroke Service Manual, Page 147Get this manual
7-30 POWER UNIT VALVE SEAT SERVICING If valve seat contact width is out of specification, reface valve seat as follows: Valve seat angle Intake side Exhaust side 09916-20620 09916-20610 09916-24440 09916-24450 09916-54910
: 15, 4515, 45Valve seat cutter 45 (NEWAY122)Valve seat cutter 15 (NEWAY121)Handle adaptor (N-503-1)Solid pilot (N-100-5.52)Handle (N-505)
Valve seat