2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 228Get this manual

2006 Arctic Cat ATVs 400/400TBX/400TRV/500/500TBX/500TRV/650H1/650 V-Twin Service Manual, Page 228

BCamshaft lobes directed down (toward the piston)CCamshaft alignment marks parallel to the valve cover mating surfaceDRecessed
to rotate and be sure the cam lobes end up in the down position 16Place the tab-washer onto the sprocket making sure it covers
the pin in the alignment hole ATV1027 ! CAUTION Care must be taken that the tab-washer is installed correctly to cover the
alignment hole on the sprocketIf the alignment pin falls out, severe engine damage will result 15Seat the cam sprocket onto
the camshaft making sure the alignment pin in the camshaft aligns with the smallest hole in the sprocket; then place the
camshaftsprocket assembly onto the cylinder ensuring the following 17Install the first cap screw (threads coated with red
Loctite #271) securing the sprocket and tab-washer to the camshaftTighten only until snug CD464 CF013A APiston still at top-dead-center3-185