2008 Arctic Cat 400/500/650/700 ATV Service Manual, Page 174Get this manual
CCylinder Head DValve Cover NOTE: Steps 1-5 in the preceding sub-section must precede this procedure
6Place the chain guide into the cylinder
! CAUTION
Care should be taken that the bottom of the chain guide is secured in the crankcase bossCC272D
9Loosely install the five cylinder head nuts10In crisscross pattern, tighten the four cylinder head cap screws (from step 8) to 27.5 ft-lb (500) or to 40 ft-lb (H1 Models); then tighten the mm nut (from step 9) to 18 ft-lbUsing crisscross pattern, tighten the mm nuts (from step 9) to ft-lbTighten the two cylinder-to-crankcase nuts (from step 4) securely11With the timing inspection plug removed and the chain held tight, rotate the crankshaft until the piston is at top-dead-center12With the alignment pin installed in the camshaft, loosely place the cam sprocket (with the recessed side facing the cam shaft lobes) onto the camshaftAt this point, do not "seat" the sprocket onto the shaft