2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 252Get this manual

2003 Arctic Cat ATVs from 250cc to 500cc Service Manual, Page 252

8Remove the five nuts securing the cylinder head to the cylinder; then remove the four cylinder head cap screws with copper
for washer); then remove the tensioner 7While holding the chain, slide the sprocket and camshaft out of the cylinder head
NOTE: Loop the chain over the cylinder and secure it with wire to keep it from falling into the crankcase 9Remove the cylinder