2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 172Get this manual
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22 Depress the spring-loaded lock and push the plunger into the tensionerMD1137
23 Place the cam chain tensioner assembly and gasket into the cylinder making sure the ratchet side is facing towa