2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 155Get this manual
Cylinder block NOTE: The oil seals must be installed before tightening the crankcase bolts Apply engine oil to the crankcase bolts before installation Tighten crankcase bolts 1F to the specified torques in two stages first, and then tighten crankcase bolts GS to the specified torques in two stages Make mark on the crankcase and crankcase bolts, and then tighten crankcase bolts 1F 90 from the mark18 Crankcase bolt (M8): 1st: 25 Nm (2.5 kgfm, 18 ftlb) 2nd: 90 9F Crankcase bolt (M10): 1st: 40 Nm (4.0 kgfm, 29 ftlb) 2nd: 90 Crankcase bolt (M8): 1st: 14 Nm (1.4 kgfm, 10 ftlb) 2nd: 28 Nm (2.8 kgfm, 20 ftlb)
CAUTION:
Do not reuse the connecting rod bolts, always replace them with new onesNOTE: Align the marks on the connecting rod cap and connecting rod, which you made during disassembly Apply engine oil to the connecting rod cap and connecting rod bolt before installation Make mark on the connecting rod bolts and connecting rod caps, and then tighten the bolts 90 from the markConnecting rod bolt: 1st: 23 Nm (2.3 kgfm, 17 ftlb) 2nd: 48 Nm (4.8 kgfm, 35 ftlb) 3rd: 90