2007 Arctic Cat Four-Stroke Factory Service Manual, Page 88Get this manual
! NOTE: The timing marks in the illustrations have been highlighted for easy identificationThe timing marks are small triangles on the outer face of the sprockets! NOTE: The two camshafts may need to be rotated sightly to align the two timing marks with the two dark links AO324A
36With the crankshaft sprocket keyway aligned with the mark on the crankcase, install the timing chain so the yellow link faces away from the engine positioning it directly opposite from the crankshaft-to-sprocket keyway! NOTE: There is also an indent in the sprocket for aligning with the yellow linkMD1596