2008 Arctic Cat ATVs factory service and repair manual, Page 37Get this manual
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Ivalve Face Diameter Valveflappet Clearance (cold engine)
( sV2nd) 0.97-0.99 mm (0.0381-0.0389 in) 20.03 mm (0.789 in (min) 19.98 mm (0.787 in 20.04 mm (0.7889 in 0.10-0.55 mm (0.004-0.022 in 21