2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 10Get this manual

2006 Arctic Cat Y-6/Y-12 50cc and 90cc Service Manual, Page 10

3Remove the spark plug wire and the spark plug; then rotate the engine clockwise to the TDC position on the compression strokeNOTE:
clearance is not within specifications, loosen the jam nut and rotate the tappet adjuster screw until the clearance is within
specificationsTighten each jam nut securely after completing the adjustmentVALVETAPPET CLEARANCE Y-6 Intake Exhaust Intake
Exhaust 0.04 mm (0.0016 in 0.04 mm (0.0016 in 0.1 mm (0.0039 in 0.1 mm (0.0039 in 6Install the valve cover and tighten the
four cap screws to specifications using crisscross pattern; then install the breather tube7Install the fan shroud and tighten