I'm in the middle of replacing my camshaft, and I'm to the point where I need to loosen the timing chain slightly before pulling off the cam gear, however there seems to be a bit of an issue. The Haynes manual says that on engines with the lightweight tension rail, I just need to slacken the thrust pin of the timing chain by removing the tensioning bolt and spring. However, when I pulled off the bolt, there was no spring and the tensioner seems as tight as it did before. Do I need to remove the entire tensioner with this model?

The plug style:
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