Yamaha F100B F100C Outboards Factory Service Manual, Page 114Get this manual
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POWR Cylinder head
17 (1.7 kgf m, 12 ft Ib)2 (0.2 kgf m, 1.4 ft Ib)
GM 4T11 61st (0.8 kgf m, 5.8 ft lb) 2nd 17 (1.7 kgf m, 12 ft lb)