2011 Arctic Cat 400 TRV ATV Service Manual, Page 29Get this manual
7Noting the timing marks for installing purposes, drop the sprocket off the camshaftWhile holding the cam chain, slide the sprocket and camshaft out of the cylinder headAccount for an alignment pinNOTE: Loop the chain over the cylinder and secure it with wire to keep it from falling into the crankcase
10Remove the cylinder head from the cylinder, remove the gasket, and account for two alignment pins
AT THIS POINT
To service valves and cylinder head, see Servicing Top-Side Components sub-sectionMD1132
11Remove the cam chain guide