2004 650 Twin Arctic Cat ATV Service Manual, Page 15Get this manual

2004 650 Twin Arctic Cat ATV Service Manual, Page 15

ValveTappet Clearance (Valve Adjuster Procedure) To check and adjust valvetappet clearance, use the following procedureNOTE:
indicated by the TF mark on the flywheelTF is top dead center frontNOTE: At this point, the rocker arms and adjuster screws
must not have pressure on themNOTE: Use Valve Gap Adjuster (pn 0444-092) for this procedure Testing Engine Compression To
test engine compression, use the following procedure1Remove the high tension leads from the spark plugs2Using compressed
air, blow any debris from around the spark plugs 3Place the valve adjuster onto the jam nut securing the tappet adjuster
screw; then rotate the valve adjuster dial clockwise until the end is seated in the tappet adjuster screw4While holding the
valve adjuster dial in place, use the valve adjuster handle and loosen the jam nut; then rotate the tappet adjuster screw
clockwise until friction is felt5Align the valve adjuster handle with one of the marks on the valve adjuster dial6While holding
the valve adjuster handle in place, rotate the valve adjuster dial counterclockwise until proper valvetappet clearance is