The rear brake torque arm on the CB350 has a locking tab at the front where it attaches to the swingarm. The locking tab is on the bolt head side. On the other side is a flat washer, a nut, and a cotter pin. I cannot figure out why there is a locking tab there. It doesn't secure anything. If the cotter pin comes out, the nut could back off. If the nut falls off, then the whole bolt will fall out. The 360's, 750's etc. don't have this locking tab. What does it do? It is number 25 in the diagram.
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