2001 Edition Yamaha F225A and LF225A Outboards Service Manual, Page 152Get this manual
Power unit
Disassembling the oil pump
1Remove the screws and disassemble the oil pump
3Select the suitable main bearing number from the table
Checking the oil pump
1Check the oil seals and gasket for tearsReplace if necessary2Check the teeth of the gears for cracks or wear and the oil pump case for scratchesReplace if necessary
Cylinder block mark b
98 99 00 01 02 03 04 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 92 91 90 89 88 87 86 85 84 83 82 81 80 79 78 77 76 75 74 73 72 71 70 69 68 1 2 3 2 3 3