2003+ Suzuki DF9.9/DF15 four stroke outboard motors service manual, Page 111Get this manual
POWER UNIT
VALVEVALVE GUIDE Valve guide to valve stem clearance IN 0.010 0.037 mm (0.0004 0.0015 in) Standard: EX 0.035 0.062 mm (0.0014 0.0024 in) Service limit: IN 0.070 mm (0.0028 in) EX 0.090 mm (0.0035 in) If the measurement exceeds the service limit, replace the valve andor valve guideTo check the clearance, measure the following items: Valve stem outside diameter Valve guide inside diameter09900-20205: Micrometer Small bore gauge or dial calipers Valve stem outside diameter Standard: IN 5.475 5.490 mm (0.2156 0.2161 in) EX 5.450 5.465 mm (0.2146 0.2152 in)