Suzuki DF25/DF30 Four Stroke Service Manual, Page 165Get this manual
7-48 POWER UNIT (6) Remove conrod and conrod cap from crank pin(7) Using scale on Plastigauge envelop, measure Plastigauge with at its widest point Conrod big end oil clrearance Standard0.020 0.040 mm (0.0008 0.0016 in Service limit0.065 mm (0.0026 in If measurement exceeds service limit, replace conrod bearing