The key has to be placed into the CCT to engage the screw slot inside the CCT. Once wound out, the key is pushed it 2 mm to engage with the X in the out face of the CCT unit to lock it in place (so it does not spin back).
Honda Automatic Cam Chain Tensioner Key CCT VFR800 VTEC CBR600RR CBR1000RR ECT
TUSK Automatic Cam Chain Tensioner Kit Black Anodized for Polaris RZR XP 4 1000 2014-2016
HONDA CBR125R Cam Chain & Lifter Set 2004 2005 2006 2007 2008 2009 2010 UK STOCK
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For Honda Timing Cam Chain CB750C Custom 1980-1982/ CB750F Super Sport 1979-1982
Honda Genuine Cam Chain Tensioner with Gasket14520-MEE-013 2003 2015 CBR600RR