2006 Arctic Cat DVX 400 Service Manual, Page 73Get this manual
CCylinder Head DCamshafts EValve Cover FCam Chain Tensioner NOTE: Steps 1-7 of the preceding sub-section must precede this procedure
8Install the cylinder head on the cylinder9Lightly oil the threads of the 10 mm cap screws and the washers; then install and tighten in two steps to specifications using diagonal pattern
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NOTE: When mounting the cylinder after installing the camshaft drive chain, be sure to keep the drive chain tautThe drive chain must not be allowed to catch between the cam drive chain sprocket and the crankcase when the crankshaft is rotated