Honda BF135A, BF150A Outboard Motors Shop Manual., Page 355Get this manual
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9CRANKSHAFT PULLEY!CAM CHAIN 1DISASSEMBLY
12 Nm (1.2 kgfm, IbHt)
12 Nm (1.2 kgfm, 9 Ibf.ft)
Nm (1.2 "g'm, Ib'ft)
22 Nm (2.2 kgfm, 16 IbHt)