1996-2005 Suzuki DF40, DF50 Four Stroke Outboard Service Manual, Page 348Get this manual
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DF40DF50 "K1" (01) model 13-12 24252627
09916-20610 Valve seat cutter (Neway 121)
09916-34550 Valve guide reamer5.5 mm)
09916-34542 Valve guide reamer handle