You shouldn't be using pins to join a K510 at all. They come with a master link. Shimano pins are only for their narrow derailleur chains.
I noticed there was a master link yesterday but I had no idea how to use it so I just broke the chain... Presumably that is ok as well?
@Eiger started
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I noticed there was a master link yesterday but I had no idea how to use it so I just broke the chain... Presumably that is ok as well?