2010 Arctic Cat DVX 300 / 300 Utility ATV Service Manual, Page 31Get this manual
1Remove the cap screws securing the cylinder head coverAccount for the O-ring KM707A
4Remove the camshaft gear from the cam chain; then secure the timing chain so it will not fall into the engineRemove the camshaft5Remove the two external cap screws securing the cylinder head to the cylinder; then remove the cylinder headAccount for two alignment pins and cylinder head gasket
NOTE: Keep the mounting hardware with the cover for assembly purposes
2Remove the plug from the cam chain tensioner; then turn the cam chain tensioner screw clockwise to release the chain tension
KM718A KM704A
3Using crisscross pattern, loosen the four nuts securing the camshaft holder to the cylinder headUse 2-3 steps until the nuts are all free; then remove the camshaft holderAccount for four washers and two alignment pins