Yamaha F100B F100C Outboards Factory Service Manual, Page 151Get this manual
Special service toolsLower unit (F100B) Lower unit (F100B)7 (0.7 kgf m, 5.1 ft Ib)6
42 (4.2 kgf m, 30 ft Ib) 55 (5.5 kgf m, 40 ft Ib)
12 14 15 17
39 (3.9 kgf m, 28 ft Ib)
39 (3.9 kgf m, 28 ft Ib)