Honda BF135A, BF150A Outboard Motors Shop Manual., Page 277Get this manual
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BF135A-BF150A 14) Tighten the four mm screw-washers securely Install the connector bracket in the position shown and secure with the two mm screw-washersTORQUE: 3.4 N-m (0.35 kgf-m, 2.4 Ibf-ft)