Suzuki DF25/DF30 Four Stroke Service Manual, Page 169Get this manual
7-52 POWER UNIT SELECTIN OF MAIN BEARING Whenever bearing requires replacement, select new bearing according to following procedure(1) First check journal diameterAs show in figure, upper (flywheel side) crank web of No.1 cylinder has four (4) stamped numeralsThe numerals (1,3) represent the journal diameters shown belowNumeral stamped Journal diameter 39.994 40.000 mm (1.5746 1.5748 in 39.988 39.994 mm (1.5743 1.5746 in 39.982 39.988 mm (1.5741 1.5743 in
No2 Jornal code No1 Jornal code
Flywheel side