2006-2010 Suzuki DF150 / DF175 4-Stroke Outboards Service Manual, Page 257Get this manual
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POWER UNIT
Valve stem runout Measure valve stem runout$ 09900-20606: Dial gauge 09900-20701: Magnetic stand 09900-21304: "V" block set Valve stem runout Service limit: 0.05 mm (0.0020 in)