2009-2010 Suzuki DF70A DF80A DF90A Outboard Service Manual, Page 145Get this manual
Power Unit Mechanical: 3) Remove valve stem seal (5) and valve spring seat (6)NOTE Reassemble each valve and valve spring in their original positions(B)
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3) Apply engine oil to stem seal, valve guide bore and valve stem4) Install valve (3) to valve guideI9J011140211-02
NOTE Reassemble each valve and valve spring to their original position
Assembly Reassemble in reverse order of disassembly paying special attention to the following steps6