Yamaha 115-225 HP Outboards Service Manual, Page 151Get this manual
_ 2) is the deviation of the lower case dimension from standardIt is stamped on the trim tab mounting surface of the lower case in 0.01 mm unitsIf the mark is missing or unreadable, assume an mark of "0", and check the backlash when the unit is assembledExample: If mark is "+5", then 1.60+(+5)100 mm1.60+0.05 mm 1.65 mm (0.065 in) If mark is- 3", then 1.60+(-3)100 mm 1.60-0.03 mm 1.57 mm (0.062 in)
YB-34446-1 V4: YB3444&7 V4: YB3444&5 YB -34446-3
V6: YB3444&4