Suzuki 2002-2005 DF4/DF5/DF6 4-Stroke Outboards Service Manual, Page 92Get this manual
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POWER UNIT 6-25 Piston ring end gap Measure the piston ring end gap with the piston ring in the lowest position of the cylinder bore09900-20803 Thickness gauge Piston ring end gap Standard1st 0.20 0.3